How to get transparent image on screen

[sid_diu]

Hi to all
I have developed an application in S60 Second edition which will display one small image ( Application Indicator). But my problem is its giving me white square background.

i have also tried using mask but i m not able to do this.
Have any one solved it before..
Because my image doesn't look like professional with white background when i change the themes.
Thank you very much...

[symbianyucca]

if you are trying to have a transparent window, then you are out of luck since S60 does not support transparent windows.

[sid_diu]

Thank you for your quick reply.
So is it possible in 3rd edition or later versions ....Because i m going to do in almost all editions.
Thank you again

[symbianyucca]

which part of S60 does not support transparent windows you did not understand ?

[sid_diu]

which part of S60 does not support transparent windows you did not understand ?

That means s60 at all not suported in any editions ?

[symbianyucca]

ok, you are getting the answer, it really says that S60 does not support transparent windows, so maybe I indeed do mean that..

[sid_diu]

ok, you are getting the answer, it really says that S60 does not support transparent windows, so maybe I indeed do mean that..

Thank you very much..
one more question
is there any way to paint that white background with nearer color or window color?

[symbianyucca]

that would be nearly pointless, since the background is hardly ever solid, most often it is take from theme. anyway you could always try taking a screenshot before you show your stuff, and use the area of it where your window is as a background.. Anyway, you can not re-fresh that, since any screenshot when you are showing your stuff would include your window on it as well...

[sid_diu]

that would be nearly pointless, since the background is hardly ever solid, most often it is take from theme. anyway you could always try taking a screenshot before you show your stuff, and use the area of it where your window is as a background.. Anyway, you can not re-fresh that, since any screenshot when you are showing your stuff would include your window on it as well...

Thank you for your guide.

[kkrish]

Hi,

I am not sure about the link but you can try at once

[symbianyucca]

Yep, you can try it out, but I would check what the error code is that the SetTransparencyFactor will return, sofar I have seen it return -5 in S60 devices, though gotta admit that i have not run that code with 9.4, thus might be worth of trying..

[A.A.M.]

I am not sure about the link but you can try at once

If I remember correctly, RWindow::SetTransparencyFactor() not supported in S60, but works in UIQ3.

[symbianyucca]

If I remember correctly, RWindow::SetTransparencyFactor() not supported in S60, but works in UIQ3.

That's What my memory tells me also, anyway, somebody could check and verify teh behaviour on the 9.4, never know, maybe something has changed, though I would assume that it is still not supported..

[A.A.M.]

Interesting results after testing this code on S60 3rd ed FP1 & FP2 devices:

void MyView::ConstructL()
{
       CreateWindowL();  //
      
       .........  
}  
 
void MyView::Draw(const TRect& aRect) const
{
	// Get the standard graphics context
	CWindowGc& gc = SystemGc();
	
	TRgb b(255, 0, 0);
	b.SetAlpha(100);  
	Window().SetTransparencyFactor(b);
	// Gets the control's extent
	TRect drawRect(Rect());
	gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
	gc.SetBrushColor(b);
 
	// Clears the screen
	gc.Clear(Rect());
 
}

The same test app running on

- S60 3rd ed FP1 device


- S60 3rd ed FP2 device


Looks like RWindow::SetTransparencyFactor() works.

[symbianyucca]

Wow, thanks A.A.M., I stand corrected.. That's actually really nice thing to have..