gdiplus: Support reading image data from device-dependent bitmaps.

dlls/gdiplus/image.c

@@ -2721,7 +2721,50 @@ GpStatus WINGDIPAPI GdipCreateBitmapFromHBITMAP(HBITMAP hbm, HPALETTE hpal, GpBi
             }
             else
             {
-                FIXME("can only get image data from DIB sections\n");
+                HDC hdc;
+                HBITMAP oldhbm;
+                BITMAPINFO *pbmi;
+                INT src_height, dst_stride;
+                BYTE *dst_bits;
+
+                hdc = CreateCompatibleDC(NULL);
+                oldhbm = SelectObject(hdc, hbm);
+
+                pbmi = GdipAlloc(sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
+
+                if (pbmi)
+                {
+                    pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+                    pbmi->bmiHeader.biBitCount = 0;
+
+                    GetDIBits(hdc, hbm, 0, 0, NULL, pbmi, DIB_RGB_COLORS);
+
+                    src_height = abs(pbmi->bmiHeader.biHeight);
+
+                    if (pbmi->bmiHeader.biHeight > 0)
+                    {
+                        dst_bits = (BYTE*)lockeddata.Scan0+lockeddata.Stride*(src_height-1);
+                        dst_stride = -lockeddata.Stride;
+                    }
+                    else
+                    {
+                        dst_bits = lockeddata.Scan0;
+                        dst_stride = lockeddata.Stride;
+                    }
+
+                    for (y=0; y<src_height; y++)
+                    {
+                        GetDIBits(hdc, hbm, y, 1, dst_bits+dst_stride*y,
+                            pbmi, DIB_RGB_COLORS);
+                    }
+
+                    GdipFree(pbmi);
+                }
+                else
+                    retval = OutOfMemory;
+
+                SelectObject(hdc, oldhbm);
+                DeleteDC(hdc);
             }
 
             GdipBitmapUnlockBits(*bitmap, &lockeddata);