🚀 go-pugleaf

In article <NEWTNews.822065811.24940.finkcr1@ptu-crf-pc.jhuapl.edu>
           finkcr1@ptu-crf-pc.jhuapl.edu  writes:

>
>I'm using VC++ 1.5 and have successfully saved the image I drew in an MDI 
>child window to a file as a DIB.  I used as a model the code in the MS example 
>program DIBVIEW.  The problem is that the bitmap I've saved to the file shows 
>up as a monochrome bitmap; the colors displayed in the window do not show up. 
>Here is the code I used to copy the bitmap to a memory DC:
>
>        memDC.CreateCompatibleDC(GetDC())
>                     .
>                     .  
>        bm.CreateCompatibleBitmap(&memDC,rect.Width(),rect.Height());
>                     .
>                     .          
>       oldbm = memDC.SelectObject(&bm);
>       memDC.BitBlt(0, 0, rect.Width(),rect.Height(), GetDC(), 0, 0, SRCCOPY); 
>
>
>When I do a GetObject on the bitmap, it says it has 1 bit per pixel.  I'm 
>confused. I don't completely understand the intricacies of palettes, etc.. The 

The problem here is your "CreateCompatibleBitmap" call. You need to create
a bitmap that's compatible with the SCREEN dc, not the MEMORY one.

Change your code to say:

    CDC *pDC = GetDC();
    memDC.CreateCompatibleDC(pDC);
    bm.CreateCompatibleBitmap( pDC, ..... );

and it will work fine.

Chris


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