Transparent windowing control

[vinsofts]

Hi All,

I want to make a control or window transparent. I tried using RWindow::SetTransparencyBitmap(), RWindow::SetTransparencyFactor() APIs.

I've changed wsini.ini file and I've added the Transparency tag then the error code return with the usage of the API is KErrNone. But I could not get the transparent window which I want.

Transparency which I mean is suppose the client window is a control.

I'm working in 3rd Edition SDK.

[vinsofts]

No kind hearts there to give an answer for this?

[lilovss]

Did you find a solution of the problem?

[ramanathanhr]

hi
There is no need to change the .ini file. Only the settransparencyfactor() API will do.
add this line in the ConstructL() of your view before ActivateL().

Window().SetTransparencyFactor(0xff000000);

this line will set the window transparent.

cheers,
ram

[lilovss]

I tried what you suggested but it returns -5 which means that it is not supported operation. Have you ever tried it?

[ramanathanhr]

hi
I have used this in my application. It worked for me. What are all the header files and the libraries u added for this. Also please check in the Draw() functin of the view. Don't clear the gc. This should work.

cheers,
ram

[raji@nokia]

Hi Ram,

I am also trying to use the API and it returns KErrNotSupported. Could you kindly send me the steps to do this or the code drop? Please help.
Thanks and regards,
Rajeswari Kannan

[ramanathanhr]

Hi
The code i have used in my view.cpp
add the following line and also include the corresponding lib in your mmp. (gdi.lib)


#include <GDI.H>

ConstructL(const TRect& aRect)
{

...
...
TRect bRect(80,80,160,190);
// Set the windows size
SetRect( bRect );

// the above 2 lines are used for setting the transparency window limit to a small portion. you can use the following lines to make ur application to have a complete transparent window.

Window().SetTransparencyFactor(0xff000000);

// Activate the window, which makes it ready to be drawn
ActivateL();
}

also please make sure you are not clearing the Gc in your Draw function.
This should solve your problem

cheers,
ram

[comp_freak]

Hi ramanathanhr,


Can you tell me in which mobile it works because I have nokia N73 & the transparency support is not there. Whereas in Emulator i can edit wsini.ini file & get transparency support.

Regards
Peru

[ramanathanhr]

hi
I have tested my code in 3.x(3.0,3.1) mobiles. it worked fine.Even for the emulator i have not edited the .ini file that you mentioned.

Cheers,
Ram

[symbianyucca]

sure if you do not call Clear in your Draw the old background will be shown, but have you checked if it actually gets updated correctly ?
Also how should you handle animations, changing text etc. if you should not call Clear in your Draw ?

[naresh99]

I tried on both emulator & phone(Nokia 5700), but it gives KErrNotSupported error in TInt Err = Window().SetTransparencyFactor(0xff000000);

I also tried with & without TRANSPARENCY tab in wsini.ini. If any1 is able to create transparent window please post the full example here. It will be very helpful to everyone in forum.

Thanks,
Naresh

[symbianyucca]

transparent windows are not working on S60 devices unfortunately...

[hsany330]

how to draw sprite bitmap on the idle(phone desk)?
use RWsSprite??