Related
I have a little project in mind, but would like some input from the pros to cut research time:
Is it possible to "wrap" a Today plugin dll with another, providing a "pass through" for operations (such as screen taps, etc)?
What I'm trying to accomplish is this: Add selectability and other one-handed d-pad operation to an older plugin that is not selectable.
What do you think?
it's possible but the problem is that the plugin have to keep track on what plugins it include and which handles it have to pass to them
could end up big and slow
Rudegar said:
it's possible but the problem is that the plugin have to keep track on what plugins it include and which handles it have to pass to them
could end up big and slow
Click to expand...
Click to collapse
This is specific to a single plugin - it would only keep track of one.
Perhaps plan B would be easier - a plugin that manipulates another plugin. Such that it would "appear" the older plugin was selected, etc. I guess I'd better go study some more...
Actually its really simple.
Any plug-in DLL exports a function called InitCustomItem. In this function the plug-in does all its initialization, and creates its window. The return value is the handle to this window which you can subclass to add functionality.
as for selection, there is a value in the registry for each plug-in (HKLM\Software\Microsoft\Today\Items) which controls whether the system passes selection events to the plug-in or not.
it has three settings:
0 - non selectable, item will be skipped by the system.
1 - Automatic, the system will paint the item and handle selection on / off
2 - Manual, the system will pass the selection event to the item and the item will take care of the rest. In this mode the return value of the WM_ACTION determines whether the selection is moving on. This is good for multiline plug-ins that don't want to give up focus when arrow keys are pressed.
levenum said:
Actually its really simple.
Any plug-in DLL exports a function called InitCustomItem. In this function the plug-in does all its initialization, and creates its window. The return value is the handle to this window which you can subclass to add functionality.
as for selection, there is a value in the registry for each plug-in (HKLM\Software\Microsoft\Today\Items) which controls whether the system passes selection events to the plug-in or not.
it has three settings:
0 - non selectable, item will be skipped by the system.
1 - Automatic, the system will paint the item and handle selection on / off
2 - Manual, the system will pass the selection event to the item and the item will take care of the rest. In this mode the return value of the WM_ACTION determines whether the selection is moving on. This is good for multiline plug-ins that don't want to give up focus when arrow keys are pressed.
Click to expand...
Click to collapse
Hey, thanks for the response! I've set the Selectability registry item for the older plugin, and it's ignoring it - that's what started me on this little project.
I'm a software developer by trade, but not with C++, so I don't want to waste people's time here asking a lot of dumb questions. If you could point me in the right direction on a couple of things, I'll go off and learn:
1. If all I have is a dll and nothing else (no .defs, etc), can I determine all of the functions it exports (other than InitCustomItem)?
2. Process check: My custom plugin's InitCustomItem would call old-plugin's InitCustomItem, snagging old-plug's hwnd. New-plugin would then initialize it's own window - transparent(?) and pass that hwnd back to windows. Also, my custom plugin would pass all messages to old-plugin, etc. Theoretically, old-plug would look and operate like normal?
If this is already written, just sent me the code!
Well I am afraid it will be difficult to do all this without C++. As far as WM based devices are concerned you need to use something that translates in to native code to create system components like the plugins son ,no .NET languages, and embedded VB doesn't do well on anything never that WM 2003 (not even SE), plus I am not sure if you can make DLLs with it at all.
To your questions:
1) There is a tool which comes with VS 6 called Dependency Walker. It shows you what functions a given DLL exports, what it imports from other DLLs and what DLLs it is link to. Woks on EXE files as well.
If you can't get that, download a demo of IDA 5. It's the most powerful disassembler for WM devices out there.
2) Not sure, I never tried anything like that. The thing is, the system resizes the plugins, on initialization (it controls height) and when screen rotation changes so if you pass back HWND for a window other than the one visible, it might cause some problems.
I think what you should do is learn about subclassing. It's when you replace the procedure of an existing window with your own (just replace the function, not create new window). You then get all the messages for that window, you can do what you want and call the original function when you done.
By the way, if you want to learn about writing plugins there is an article with code samples on this site: www.pocketpcdn.com and a lot of other interesting stuff.
Good luck.
What plugin is it? It might be easiest just to rewrite the plugin if you've got the code.
V
levenum said:
Well I am afraid it will be difficult to do all this without C++.
Click to expand...
Click to collapse
I should have been more clear - I am using C++, I'm just have to learn how to program with it first!
vijay555 said:
What plugin is it? It might be easiest just to rewrite the plugin if you've got the code.
V
Click to expand...
Click to collapse
I don't have the old-plugin source code. My little project is to add some sort of d-pad operation to the WeatherPanel plugin, which you're probably familiar with.
Progress: I've written and deployed my first little plugin - based on the source code samples available in the internet.
Next step: In my InitializeCustomItem, I thought I'd try to call WeatherPanel's InitializeCustomItem (instead of creating my own window). Thing is, I don't yet know how to properly link the WeatherPanel dll to my project. As expected, it only exports two functions: InitializeCustomItem and CustomItemOptionsDlgProc (I used dumpbin.exe)
I'll keep plugging away - any input would be appreciated.
Thanks for your help!
It's real easy:
Use LoadLibrary and GetProcAddress functions to call functions in other DLLs without linking them.
levenum said:
It's real easy:
Use LoadLibrary and GetProcAddress functions to call functions in other DLLs without linking them.
Click to expand...
Click to collapse
What a coincidence! My studying led me to the same functions.
From within my plugin's InitializeCustomItem, I was able to successfully load the dll with LoadLibrayl, GepProcAddress of its InitializeCustomeItem (at ordinal 240) and call it. But it whacks the Today screen so that none of the plugins load.
Next I thought I'd try FindWindow and EnumChildWindows to find it and all it's children. Then manipulate them by sending messages...
storyr said:
What a coincidence! My studying led me to the same functions.
From within my plugin's InitializeCustomItem, I was able to successfully load the dll with LoadLibrayl, GepProcAddress of its InitializeCustomeItem (at ordinal 240) and call it. But it whacks the Today screen so that none of the plugins load.
Next I thought I'd try FindWindow and EnumChildWindows to find it and all it's children. Then manipulate them by sending messages...
Click to expand...
Click to collapse
Update: So far, so good. As it turns out, EnumChildWindows doesn't work on the PPC, so I used GetWindow to find the plugin's handle. I can successfully send messages to it and initiate various actions.
Question: I'd like to visually indicate (on the old-plugin) what's being clicked (such as drawing a box around it). Is it possible to draw things outside of my own window?
It is, but it's tricky.
You can always use the GetDC function to retrieve the DC for another window and paint on it, but the problem is that unless you subclass the window you have no way of knowing when it repaints it self and all your changes are erased.
levenum said:
It is, but it's tricky.
You can always use the GetDC function to retrieve the DC for another window and paint on it, but the problem is that unless you subclass the window you have no way of knowing when it repaints it self and all your changes are erased.
Click to expand...
Click to collapse
I tried that exact thing (GetDC) and drew a rectangle in it, but it didn't do anything. I realized the reason was the WM_Paint event wasn't firing on old-plugin, and when it did, my stuff was erased (just like you said).
Next idea - open my own dialog window than overlays old-plug. The entire window needs to be transparent - except for the visual indicators that I position where I want. When the user ok's, I close the window and send the click to old-plugin...
Thanks again for keeping tabs on my progress..
No offence, but with all these rather advanced programming tricks you are attempting just to "sup up" an old weather plugin it looks to me like you would be better off just writing the whole thing from scratch.
It you are familiar with WinInet and / or sockets this should be pretty easy and it will look and work much better than the hack you are attempting now.
Plus you can make it exactly the way you like.
levenum said:
No offence, but with all these rather advanced programming tricks you are attempting just to "sup up" an old weather plugin it looks to me like you would be better off just writing the whole thing from scratch.
It you are familiar with WinInet and / or sockets this should be pretty easy and it will look and work much better than the hack you are attempting now.
Plus you can make it exactly the way you like.
Click to expand...
Click to collapse
No offence taken. I thought of that, but I figured this would be a good way to cut my teeth a little. Once I complete this little project, I may pursue that route...
Question: Do you have a favorite forum (or forums) besides this site that you use for your research/programming questions?
This is my favorite forum
But here are couple more sites I found very valuable:
www.pocketpcdn.com - They have tips and tricks with code examples arranged in categories like how to make MFC dialogs not full screen or the one I used in LVMTime to put the clock back on the taskbar.
www.codeproject.com - It's not specific to WM development but has tons of interesting stuff including entire sources.
You should also check out www.buzdev.net If you're not familiar with the great work of buzz_lightyear you should see some of the stuff he did for this forum like grab_it - the invisible ROM dumper.
OT
Just a quick OT question:
If I would move some of the plugin-dll's from \Windows to \Storage Card, would it be enough to change the adress within the corresponding item in the registry entry HKLM/Software/Microsoft/Today/Items ?
Of course I'm not talking about plugins like tasks a.s.o but rather third party plugins
Cheers
hrb
It won't work.
The problem is that the SD card is mounted too late so if you put the plugins on it they will not be loaded when device boots up.
You can move them to the extended ROM this way or to a folder other than windows but there is no way to move start-up stuff to SD.
Thanks for the help with this "little" project. After many hours, the product is out for beta testing. When it's released, I'll post more info...
Finished!
It's finished. The app is called WP-Pilot and it provides one-handed operation of WeatherPanel. If anyone's interested, it can be found here. Here's how it ended up:
There's a plugin (WP-PilotPlugin.dll) with an options dialog, and an executable (WP-Pilot.exe).
When the plugin gets selected, it looks for Weatherpanel. If it finds it, it fires off WP-Pilot.exe
WP-Pilot.exe opens. It does this stuff:
Look for WeatherPanel, and get it's screen coordinates.
Read the registry and determine which layout file WeatherPanel is using.
Open the layout file and read it: Record the coordinates of each "clickable" item found. This was a real PITA because of Unicode.
Sort the coordinates for left-to-right, top-to-bottom order.
Select the first coordinate and position a tiny window (10x10) at that x-y position.
Draw a "pointer" in the window (the type and color depends on what's selected in the options).
Show the window and process input:
[*]Left/right pressed - selected the next/previous coordinate and move the window to that location.
[*]Up/down pressed - close WP-Pilot and tell the plugin we're done.
[*]Center button pushed:
[*]Send a mouse click to the WeatherPanel plugin at the coordinates
[*]Close WP-Pilot and tell the plugin we're done.
Thanks again for your help!
Not sure if I have worded this properly as I'm at the edge of my knowledge but I wish to call a function that I am assuming is in a DLL which is contained in ROM. I know the name of the DLL but how can I get a list of functions available from it when I cannot copy it onto my PC?
Many Thanks
Hi Tailor.
First, what function exactly are you looking for? There may be some documentation on it somewhere.
To browse a ROM dll you need to get a ROM dump. The simplest way for your purpose, provided you have a WM5 device is to search for TESTWM5.exe by mamiac on this forum. It will dump all files to your SD. They won't be workable for coding purposes, but still good enough to use dependency walker to get exported functions from DLLs.
Unfortunately that still won't tell you the parameters the function expects. only its name.
Hi Levenum and thanks for your reply.
Its a Sony Sat Nav Windows CE 4.2 device so unforunately theres not much chance of a ROM dump or documentation. Then unit is sold as a finished product and not intended for further developement.
I have installed TomTom instead of the poor app already installed and was trying to get access to the hardware buttons and Light sensor on the unit and then intended to use the TomTom SDK to recreate their functions.
The keys don't not trigger a key press event but their are DLL's called something like powerbutton.dll and navbutton.dll and so it's a fair guess that they could be used to trigger these events.
Obviously without knowing their exported functions I'm not going to get much further.
Any further thoughts ?
Many Thanks
How exactly are you trying to catch the key events?
For what you describe, you don't just need to know function names, you need to know with what parameters to call them so this is definitely not the way to go.
If you are coding with C++ search for info on SetWindowsHook. I am not sure of its implementation on CE, but this might be what you need.
I'm using VB.Net 2005
I'll have a look at SetWindowsHook, Thanks.
Any ideas for the light sensor, there's a test app that Sony have left on the device, it gives a reading from 0 to 100?
How are they likely to be reading this value?
Ok, most of you may find this totally useless as a plugin, but it was a combination of a request by user Treo_newb and a desire to create a sample plugin project that could be used as a base / example for plugin writers (I plan on doing an article on codeproject.com and this will be the source for it).
What does it do?
This plugin displays a string stored in registry.
The path is:
HKEY_CURRENT_USER\Software\RegDispPlugin
Value name: DisplayString
It checks if this string has changed several times per second when today screen is shown (as the system sends refresh message to all plugins) and displays the updated message if a change occurred.
What is it good for?
First, if you write apps using mortscript or similar like the user who requested this it will let your script display stuff on today screen.
Alternatively it could be used to mark your device today with a string that isn't as easily changed as user info.
The source is basically a skeleton plugin you can use to build your own plugin on (no license / copyright to limit you) and it already has several tricks needed for the plugin to display correctly:
VGA compatibility
Text size matching system settings
Proper header in settings dialog (like on system plugins)
Proper text color when selected (according to theme)
No blinking all today screen on change
Proper resize when switching between landscape and portrait
When I was writing my first plugin I could not find all these little fixes concentrated in a single article so I had to fish for each one as the bug reports came in.
Hope you will find this little project useful.
The plugin:View attachment RegDisplay.CAB
The source (eVC 4 project): View attachment RegDisplay.zip
Thanks for this!
Thank You Lev.
Thanks, Thanks, Thanks,
You are a legend.
I was almost through with my today plugin and was trying to figure out reading registry values and all of a sudden I get a PM from u about the plugin !!!
Very Cool !!!
OK a few questions,
1. I know that WM_TODAYCUSTOM_QUERYREFRESHCACHE is called for refreshing the today plugin, any ideas about when is it called.
I read somewhere that it was 2 seconds. Is it true?
2. I saw ur code and u have exposed CustomItemOptionsDlgProc in RegDisplay.def, but when I installed the cab file the 'options' is not enabled.
I manually changed the resistry and changed options to dword = 1 and saw ur name and email address.
u might want to enable that by default so that people can notice ur work.
I am planing a commercial release of a new project on basis of this.
Thanks again,
Shailesh
First, you're welcome.
shaileshashar:
1) I ran a debug print on this message once on an iPaq 1710 and it seems to be sent several times per second. This could differ from OS to OS or even from device to device, I am not sure.
If you need specifically timed refresh, or you have an event triggered on new data, I suggest using a timer or maybe a thread that will wait on an event. You can refresh your plugin from anywhere in code by calling InvalidateRect with your window handle.
2) I messed up the cab at first, forgetting to add the Options reg value. Then when I went to upload the fix, I couldn't access the site for about an hour (no idea why, I even rebooted the PC to Ubuntu). Should be fixed now, but I will check it later again (I have to go back to XP for that).
Good luck with your program.
Suggestion
levenum said:
First, you're welcome.
shaileshashar:
1) I ran a debug print on this message once on an iPaq 1710 and it seems to be sent several times per second. This could differ from OS to OS or even from device to device, I am not sure.
If you need specifically timed refresh, or you have an event triggered on new data, I suggest using a timer or maybe a thread that will wait on an event. You can refresh your plugin from anywhere in code by calling InvalidateRect with your window handle.
2) I messed up the cab at first, forgetting to add the Options reg value. Then when I went to upload the fix, I couldn't access the site for about an hour (no idea why, I even rebooted the PC to Ubuntu). Should be fixed now, but I will check it later again (I have to go back to XP for that).
Good luck with your program.
Click to expand...
Click to collapse
Thanks for the help, will check the fixed cab.
Also a suggestion:
A custom icon could also be incorporated. You can give a option to load a custom icon next to the text in the today plugin.
I know anybody can modify ur code and do it but still.
Actually, I probably should have mentioned this in the original post but I have no intention of adding options to this thing.
This would only complicate the code and turn it in to an actual app instead of a sample project.
But by all means feel free to make suggestions. If this thing does become popular, when I am done with my other projects (like LVMTopBat) which won't be any time soon (unfortunately) I will release a separate version of this plugin with all kinds of options that can be controlled both by user (form the options dialog) and by other apps through registry.
Maybe things like text alignment, size, bold / Italic / underlined.
P.S.
The reason I put the string this plugin loads under HKEY_CURRENT_USER instead of the HKLM where the rest of the plugin registry resides is because by default the HKEY_LOCAL_MACHINE on WM 5 and higher has a security restriction. For example you can not write to it using RAPI, only by authorized (or signed) app on the device. The HKEY_CURRENT_USER on the other hand is open for all.
levenum said:
P.S.
The reason I put the string this plugin loads under HKEY_CURRENT_USER instead of the HKLM where the rest of the plugin registry resides is because by default the HKEY_LOCAL_MACHINE on WM 5 and higher has a security restriction. For example you can not write to it using RAPI, only by authorized (or signed) app on the device. The HKEY_CURRENT_USER on the other hand is open for all.
Click to expand...
Click to collapse
Thanks for the info, I never knew that.
Thank you so much! This was exactly what I was looking for!
levenum said:
...But by all means feel free to make suggestions.
Click to expand...
Click to collapse
As a frequent mortscript user I think, this great app might be even more usefull, if the string was shown in an "allways on top" message box instead of the today screen. The Today screen might be obscured by other active windows during the scripts runtime and the plugin eats precious today screen estate also while being unused, doesn't it?
In that case (of a standalone application) I would furthermore introduce some kind of termination string (or reg. value) to end the display application.
Code:
- start mortscript
- writes first string to registry
- starts display application (run)
- updates string in registry whenever appropriate
- ...
- writes termination string to registry
-> display applications self-terminates
- ...
- end of mortscript
Honestly, I already do use something comparable with mortscript (employing a conditioned sleepmessage loop and reading from the registry too), but this could be much nicer and more elegant.
Just my 2 cents... What do you think?
I think something like that would be better implemented by the mortsrit program it self.
It could be a function like MessageBox API in windows which you could then command on and off. Having it built in would save precious resources on the device that would be wasted by having an extra app run constantly in background.
This is just my thought though.
I'd suggest contacting the developer of mortscript and discussing it with him.
levenum said:
I think something like that would be better implemented by the mortsrit program it self.
...
I'd suggest contacting the developer of mortscript and discussing it with him.
Click to expand...
Click to collapse
Mort knew about that request and by chance just announced to so.
Thanks anyway.
Hello levenum,
I just joined the community. Reason being, I found your RegDisplay plug-in
You call it a sample project, but the impact is that of an awesome solution.
Great for MortScript, but equally useful in BASIC applications that write
messages to the registry which is show upon screen minimization.
I regret not being a C programmer (mainly BASIC), else I'd love to further
develop this jewel.
Your plug-in runs flawlessly in an iPAQ 210 under WM6 Classic.
Cheers and Respectful Greetings
Robert
CLSID for registry display plugin
What is the CLSID for the Registry Display Plugin? I am going to have to edit the XML file that defines my home screen in order to get the plugin to show up. I am using Facade to control my home screen, and the only plugins that it will show in its list are those currently in use in one of the XML files in the Application Data\Home folder. All other new plugins require editing the XML. Thanks for your help.
levenum said:
Ok, most of you may find this totally useless as a plugin, but it was a combination of a request by user Treo_newb and a desire to create a sample plugin project that could be used as a base / example for plugin writers (I plan on doing an article on codeproject.com and this will be the source for it).
What does it do?
This plugin displays a string stored in registry.
The path is:
HKEY_CURRENT_USER\Software\RegDispPlugin
Value name: DisplayString
It checks if this string has changed several times per second when today screen is shown (as the system sends refresh message to all plugins) and displays the updated message if a change occurred.
What is it good for?
First, if you write apps using mortscript or similar like the user who requested this it will let your script display stuff on today screen.
Alternatively it could be used to mark your device today with a string that isn't as easily changed as user info.
The source is basically a skeleton plugin you can use to build your own plugin on (no license / copyright to limit you) and it already has several tricks needed for the plugin to display correctly:
VGA compatibility
Text size matching system settings
Proper header in settings dialog (like on system plugins)
Proper text color when selected (according to theme)
No blinking all today screen on change
Proper resize when switching between landscape and portrait
When I was writing my first plugin I could not find all these little fixes concentrated in a single article so I had to fish for each one as the bug reports came in.
Hope you will find this little project useful.
The plugin:View attachment 41592
The source (eVC 4 project): View attachment 41583
Click to expand...
Click to collapse
This is great! I was asked if I could write a today screen plug-in for my weather application (http://forum.xda-developers.com/showthread.php?t=445576) - I couldn't since I don't have the skills and I'm writing .NET code - but this is exactly what I needed.
I'm adding support for this plug-in and will of course give credits to you.
Hi.
I was playing a little bit using VS2008 and Windows Mobile 6 SDK to create my own mobile application in C#.
But what really is annoying is the missing ability of creating 'nice' UIs.
For example G-Alarm (http://forum.xda-developers.com/showthread.php?t=422362) looks much nicer then a 'simple app'.
How are those apps be done?
Or is it raw graphic programming?
Any tips appreciated.
Please get me on the road. ;-)
Regards,
AtzeX
You can use images to create nice UI's. You can make nice images with photoshop or paint.net
Sure, but that would mean, that the UI is static.
What about some dynamic, like buttons and the effects when hovering over them etc.?
Is this all done by combining different images?
Is there somewhere a sample-application demonstrating that technics?
Or is there any toolbox what they use?
AtzeX said:
Sure, but that would mean, that the UI is static.
What about some dynamic, like buttons and the effects when hovering over them etc.?
Is this all done by combining different images?
Is there somewhere a sample-application demonstrating that technics?
Or is there any toolbox what they use?
Click to expand...
Click to collapse
H-overs are usually just 2 pictures .
...not to forget the pressed state.
So, do I really have to become a graphic artist thatfore?
No other way/tricks/(common)libraries?
In what I've done, use a picturebox rather than a button, and then change the image on the mousedown/mouseup events.
If you like the button styles of a particular thing (e.g. the Diamond/Opal/whatevers volume control), I'd extract the image, resize it and you're good to go.
Obviously ask the relevant owners permission first!
Attached is the Jade volume control button (I have it in transparent, but it's a large file... I'll upload it somewhere else if wanted) which may be of use as a simple On/Off button.
l3v5y said:
In what I've done, use a picturebox rather than a button, and then change the image on the mousedown/mouseup events.
If you like the button styles of a particular thing (e.g. the Diamond/Opal/whatevers volume control), I'd extract the image, resize it and you're good to go.
Obviously ask the relevant owners permission first!
Attached is the Jade volume control button (I have it in transparent, but it's a large file... I'll upload it somewhere else if wanted) which may be of use as a simple On/Off button.
Click to expand...
Click to collapse
so they aren´t released yet ?!? OMG, xda is hacking out every piece of software but no complete diamond gfx-pack ?
would be really great, I´d like to modify them and use them for some own projects.
Thanks l3v5y!
But unfortunately I will have no time left in the next weeks, because I will be away.
But I will try and respond when I'm back.
Regards,
AtzeX
Is it possible to make pictures/pictureboxes transparent???
I want to embed png files containing transparency information
I tried so long but couldn`t find out....
thx
ya, welcome to the .net mobile world lol. I've been trying to come up with some nicer guis on my own for a few weeks now, with little luck due to poor documentation/examples and understanding of the gdi drawing capabilities.
if possible, please keep us (me) updated on what you find or code. there's just so little open source or documentation in the .net mobile world (it seems to me at least) for creating any controls (other than odl's) that try to move themselves away from the standard look and feel of the textboxes, comboboxes, etc.
I was wondering if the xFlib libraries could be used to create apps... http://www.xflib.net/
Then why would I want to use XFlib ???
XFlib has been designed following a few principles : completely free library, very simple to use, and with good enough performance to allow you to do your games without too much technical knowledge…
It all started when we, at the XFTeam, decided to do some PocketPC development. There were already tons of solutions out there, like using .Net, but pretty much everything was Windows-based, which was a problem for the Linux users That's where CEGCC came in to help : it provided us with a great free cross-platform compiler for ARM PocketPC !
We have been strongly influenced by GBA/NDS development, so the library was also designed with strong analogies to the old school 2D consoles : manage your sprites, bitmap layers, tiled backgrounds, text, etc…
Click to expand...
Click to collapse
Nice site for creating buttons:
http://cooltext.com/Buttons
Transparency and Custom controls
Transparency is a pain in the but with .net. The only way I was able to get it to work was by making unsafe system calls by add using "System.Runtime.InteropServices;"
and call Alphablend from the coredll.dll file.
[DllImport("coredll.dll")]
extern public static Int32 AlphaBlend(IntPtr hdcDest,
Int32 xDest,
Int32 yDest,
Int32 cxDest,
Int32 cyDest,
IntPtr hdcSrc,
Int32 xSrc,
Int32 ySrc,
Int32 cxSrc,
Int32 cySrc,
BlendFunction blendFunction);
Not only is it a pain but it seemed to slow down my animations significantly.
or using the native .NET GDI you can do this the following way:
this method olny makes an exact color transparent but you can't set transparency values.
System.Drawing.Imaging.ImageAttributes attr = new System.Drawing.Imaging.ImageAttributes();
// "this sets your transparent color, the color you want to disappear"
attr.SetColorKey(Color.White, Color.White);
e.DrawImage(bmp, dstRect, 0, 0, bmp.Width, bmp.Height, GraphicsUnit.Pixel, attr);
the code above is an incomplete segment that would display a bitmap named bmp with the exact color white gone.
I can post an example in C# if people want it. But basically for a unique look, I don't use any windows controls. I make a buffered picture the size of the display and bitblit the images off screen and switch them in like in a video game rendering. I draw how each control should look and then monitor mouse location and click locations to determine what control is being interacted with and what images to switch them out with.
I release a custom UI replacement program called FlipSlide here http://forum.xda-developers.com/showthread.php?t=385036 there is source code available from http://sourceforge.net/projects/flipslide/ for this that uses these techniques.
hope that helps somebody.
AtzeX said:
Hi.
I was playing a little bit using VS2008 and Windows Mobile 6 SDK to create my own mobile application in C#.
But what really is annoying is the missing ability of creating 'nice' UIs.
For example G-Alarm (http://forum.xda-developers.com/showthread.php?t=422362) looks much nicer then a 'simple app'.
How are those apps be done?
Or is it raw graphic programming?
Any tips appreciated.
Please get me on the road. ;-)
Regards,
AtzeX
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You can read this article: Building Graphically Advanced Applications with the .NET Compact Framework 3.5
thx for your help chetstriker
i will download the sourcecode and try to figure it out...
Hi Guys,
Because the standard API's to use the camera aren't flexible enough I need to use directshow.
Unfortunately I'm not a very good C++ programmer (more C# ;-))
I found this solution. Wich compiles a C++ DLL and can be called from C#.
Perfect! Except the C++ code doesn't really do what I want to. (And I have no idea how to change it)
See attachement for the C++ project
Dll does: Capture one frame from the camera and store it as a file. (with 320x240 resolution, not great quality)
I'd prefer to use the best available quality, or mayby choose the quality I want.
Also I'd prefer not saving/storing the file but return a stream / bitmap / image
Because I only want to show it on screen (actualy let a mobile webserver respond an image with as much frames per sec as possible)
(Saves a step, storing and deleting everytime)
Any Help?
PS. I also tried Directshow.Net Library But it doesn't seem to work on Windows Mobile.
C# Code
Btw, this is the code I use in C# to create the functions:
[DllImport("CameraCaptureDLL.DLL")]
private static extern bool CaptureStill(string Path);
[DllImport("CameraCaptureDLL.DLL")]
private static extern bool InitializeGraph(IntPtr hWnd);
Just to keep y'all posted, I'm now looking @ this solution (CodeProject.com)
They rewrote the DLL file, and I think it's gonna do what I want, but I first need to install Windows CE 5.0 wich takes alot of time....
I met same problem with you.
I just want to show the camera sight, like the Camera app's Preview function.
I don't know if there is a HTC's Camera SDK.
Please keep contract, if I have any improvment, I will tell you.
I had fun with camera but not using directshow or the preview...I'm just launching the camera app (using sample camera in SDK).
If anyone find an easy way to have "embedded camera display" in an application I'm really interested!! (like a pictureBox having camera as image source)
If I found something I'll tell...
DarkAngelFR said:
I had fun with camera but not using directshow or the preview...I'm just launching the camera app (using sample camera in SDK).
If anyone find an easy way to have "embedded camera display" in an application I'm really interested!! (like a pictureBox having camera as image source)
If I found something I'll tell...
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I found functions and its parameters by sniffig camera calls on my VOX
Captured data is stored as UYVY.
m32
m32 said:
I found functions and its parameters by sniffig camera calls on my VOX
Captured data is stored as UYVY.
m32
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Could you provide the compiled version of the htccamera dll ?
Will try to build this later (@work don't have cc compiler, just VS2008)
Thanks!
An in-memory capture would almost certainly improve the live-scan mode in Barcorama also! I could really use that in-memory capable CameraCaptureDll.dll.
Many users seem to have successfully compiled the source at http://www.codeproject.com/KB/mobile/samplegrabberfilter-wm6.aspx, but I can't find the compiled dll somewhere .
I fail to compile it myself as it needs the WindowsCE Platform Builder and VS2008...
Anybody that comes across the DLL, please share!
have fun,
hypest
Hello,
working on it ^^ I will upload the dll here later today
Here you go : download (if fails : try here)
is the source code compiled (look in /bin/Release). Tested and works nice (deploy the dll then the sample app).
Hope this helps!
Thanx!!
will try it!
UPDATE:
The sample opens up but seems to do nothing on my kaiser. <-UPDATE: wrong! it works OK.
I have managed to use the DLL directly though. The capturing works fine but the capture-stop seems to fail: the Stop() function hangs. I use the Shutdown() that seems to be OK, but then I have trouble re-initializing the whole procedure. Also, there seem to be a sensitivity on manually using the garbage collector.
Thanks again anyway!!
Cannot seem to import the dll into another project
@DarkAngelFR
Thanks very much for the sample app for video streaming, was very helpful.
However I really need to use the dll or even the import the CameraCaptureDLL c++ code into our project. I have already read over the ReadMe text file but need further help on how to create this object? Have already tried the Ignore Input Library property and that does not work sadly. Any help would be great!
Thanks,
John
m32 said:
I found functions and its parameters by sniffig camera calls on my VOX
Captured data is stored as UYVY.
m32
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Click to collapse
I have build the camerasniffer dll (and called it htccamera.dll) with mingw32ce, but how do I use it?
I tried copying it to "/windows" and rebooted the phone (hermes) but I do not get a log file on the storage card. Any hints?
Thanks a lot!
Hi,
I got this error when I try to debug this application on my mobile (HTC HD2)
"An unhandled exception of type 'System.MissingMethodException' occurred in TestCameraCapture.exe
Additional information: Can't find PInvoke DLL 'CameraCaptureDLL.DLL'."
But it seem to works fine on the Emulator.
How can I test it on my mobile then?
EDIT
Problem solved, I just had to copy the 'CameraCaptureDLL.DLL' file to the folder where the application is running.