Transparent bitmap on folder

[Marco Turco]

Hello,
I still have problem to display a transparent bitmap on folder with xp theme. See www.softwarexp.co.uk/beta/bitmap_on_folder.gif

I'm working with xHarbor 0.99.5+FWH26

Is there a solution available ?

Thanks in advance

Marco Turco

[Antonio Linares]

Marco,

Have you tried oBmp:lTransparent := .t. after creating it ?

[Marco Turco]

Yes I used the transparent clause in the sample you saw.

This problem appairs only on folder with xp theme,
without xp theme the transparent clause runs fine.

We had a similar problem with the say on folder
but you alredy solved this some time ago.

Marco

[Antonio Linares]

Marco,

The problems comes from the gradient background where the bitmap is painted on.

FWH already provides a special function to paint transparent on gradient background:

Code: Select all  Expand view

void TransBmp( HBITMAP hBitmap, int iXsize, int iYsize,
               COLORREF rgbTransparent, HDC hDC,
               int iXOffset, int iYOffset, int iWidth, int iHeight )

source is located at source\function\fwbmp.c. The problem is that we don't know why yet, this function looses GDI resources. We have been trying several times to find whats going wrong with it, but with no luck up to now.

If we could fix it, then we could easily paint transparent over a gradient background.

[Enrico Maria Giordano]

I can't see anything wrong in the TransBmp() source code...

EMG

[Antonio Linares]

Enrico,

Yes, I think the same but the fact is that if we use it, and you start resizing the main window, then you can see how it gets slower, as it were consuming more and more resources.

The code is there, so it may be used, but with caution until we know for sure if it is working ok.

[Enrico Maria Giordano]

Might it be that it keeps called by the paint event when it haven't already terminated the previous execution?

Only a stub in the dark.

EMG

[Antonio Linares]

Enrico,

Its a good idea, thank you

Lets check it...

[Antonio Linares]

We already have transparent bitmaps on folders with XP look