How to display few bitmaps on the same coordinations.

[gol350]

I have four bitmaps.
I have to display every of them on x = 0 and y = 0 coordinations.
My task is to display only color different to white.
White color is the mask of the bitmaps.

[S G H]

Caps Lock? Which OS are you using? Which Graphic Library (if you are using one) are you using? Some code?

[gol350]

I use only winapi.

[S G H]

EssGeEich wrote:

Caps Lock?

It isn't going to take more people in this topic.

[gol350]

I'm sorry:
I give code which display bitmaps:

HDC_NEW = CreateCompatibleDC(HDC);
HDCCOPY = CreateCompatibleDC(HDC);
HCOPY[K] = CreateCompatibleBitmap(HDC , 100 , 100);
BITMAP INFO;
GetObject(BITMAP[K] , sizeof(INFO) , & INFO);
MASK[K] = CreateBitmapMask (BITMAP[K], RGB(255, 255, 255));  
    
SaveDC(HDCCOPY);
SelectObject(HDCCOPY , HCOPY[K]);
BitBlt(HDCCOPY , 0 , 0 , 100 , 100 , HDC , X , Y , SRCCOPY);
            
SelectObject(HDC_NEW , MASK[K]);
BitBlt(HDCCOPY , 0 , 0 , 100 , 100 , HDC_NEW , 0 , 0 , SRCAND);
            
SelectObject(HDC_NEW , BITMAP[K]);
BitBlt(HDCCOPY , 0 , 0 , 100 , 100 , HDC_NEW , 0 , 0 , SRCPAINT);
            
SelectObject(HDCCOPY , HCOPY[K]); 
BitBlt(HDC , X , Y , 100 , 100 , HDCCOPY , 0 , 0 , SRCCOPY);

But to be funny, what I can I'm writing with big letters at least in code.

[S G H]

Are you sure your bitmaps's "white space" is COMPLETELY white? (Probably a little distortion will make your "CreateBitmapMask" have a different way to work)
Or, you can simply add your alpha channel with a GFX editing software just like GIMP.

Personally, i don't use WINAPI that much for Image works, but everything looks ok.