The Study of Programming Windows with MFC--Bitmap2

ゝ一世哀愁。 2022-07-12 14:19 150阅读 0赞

*::LoadImage* is to DIB sections what *::LoadBitmap* and *CDC::LoadBitmap* are to DDBs. But it's also much more. I won't rehash all the input values it accepts because you can get that from the documentation, but here's a short summary of some of the things you can do with *::LoadImage*:

*   
 *  Load bitmap resources, and create DDBs and DIB sections from them.
    
     
    
     
 *  Load bitmaps stored in BMP files, and create DDBs and DIB sections from them.
    
     
    
     
 *  Automatically convert three shades of gray (RGB (128, 128, 128), RGB (192, 192, 192), and RGB (223, 223, 223)) to the system colors COLOR\_3DSHADOW, COLOR\_3DFACE, and COLOR\_3DLIGHT as an image is loaded.
    
     
    
     
 *  Automatically convert the color of the pixel in the upper left corner of the bitmap to the system color COLOR\_WINDOW or COLOR\_3DFACE so that the pixel and others like it will be invisible against a COLOR\_WINDOW or COLOR\_3DFACE background.
    
     
    
     
 *  Convert a color image to monochrome.

Keep in mind that *::LoadImage*'s color-mapping capabilities work only with images that contain 256 or fewer colors. DIBs with 256 or fewer colors contain built-in color tables that make color mapping fast and efficient. Rather than examine every pixel in the image to perform a color conversion, *::LoadImage* simply modifies the color table.

## More on the *::LoadImage* Function ##

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