Examining a Device Contexts Current Pixel Format

Use the GetPixelFormat and DescribePixelFormat functions to examine a device context's current pixel format, as shown in the following code fragment.

PIXELFORMATDESCRIPTOR  pfd;
HDC    hdc;
int    iPixelFormat;
 
// if the device context has a current pixel format ...  
if (iPixelFormat = GetPixelFormat(hdc)) { 
 
    // obtain a detailed description of that pixel format  
    DescribePixelFormat(hdc, iPixelFormat, 
                             sizeof(PIXELFORMATDESCRIPTOR), &pfd); 
    }