Number of Pixels in a form?

[chals1]

Hello,
I want to count how many pixels there are in a window.
Is there another way apart from using GetPixel to access each pixel ?

[kirants]

GetWindowRect will give you the dimensions of a window ( client area + non-client area) in pixels.

GetClientRect will give you the dimensions of a client are of a window in pixels.

[chals1]

Thanks, but i had in mind irregular shaped forms. Maybe there's a bmp function to count pixels to avoid using GetPixel. Any further help, please?

[Ali Imran]

GetRegionData is the function that gets information about a region.
First get region of a form/dialog, then obtain RGNDATA.

HRGN rgn;

if(GetWindowRgn(hDlg, rgn)) {
    RGNDATA rd;
    GetRegionData(rgn, sizeof(RGNDATA), &rd);

     DWORD nRects = rd.rdh.nCount; //I think this is what you want
}

I hop this helps.

regards

[chals1]

edit

[chals1]

Thank you very much !!

I'll try to extract every rectangle from the RGNDATA buffer that contains the RECT structures

regards