Displaying and Printing
Bitmaps are for looking at. In this section, we’ll begin by looking at the two functions that Windows supports for displaying a DIB on the video display or a printer page. For better performance, you may eventually prefer a more roundabout method for displaying bitmaps that I’ll discuss later in this chapter. But these two functions are a logical first start.
The two functions are called SetDIBitsToDevice (pronounced “set dee eye bits to device”) and StretchDIBits (“stretch dee eye bits”). Each function uses a DIB stored in memory and can display the entire DIB or a rectangular portion of it. When you use SetDIBitsToDevice, the size of the displayed image in pixels will be the same as the pixel size of the DIB. For example, ...
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