[Windows]98에서 정상작동하는 TransparentBlt

BOOL GuiKit::TransparentBlt98( HDC hdcDest, int nXOriginDest, int nYOriginDest, int nWidthDest, int hHeightDest,
                              HDC hdcSrc, int nXOriginSrc, int nYOriginSrc, int nWidthSrc, int nHeightSrc, UINT crTransparent )
{
    COLORREF   cColor;
    HBITMAP    bmAndBack, bmAndObject, bmAndMem, bmSave;
    HBITMAP    bmBackOld, bmObjectOld, bmMemOld, bmSaveOld;
    HDC        hdcMem, hdcBack, hdcObject, hdcSave;
    POINT      ptSize;

    ptSize.x = nWidthDest;            // Get width of bitmap
    ptSize.y = hHeightDest;           // Get height of bitmap
    DPtoLP(hdcSrc, &ptSize, 1);      // Convert from device

    // to logical points

    // Create some DCs to hold temporary data.
    hdcBack   = CreateCompatibleDC(hdcDest);
    hdcObject = CreateCompatibleDC(hdcDest);
    hdcMem    = CreateCompatibleDC(hdcDest);
    hdcSave   = CreateCompatibleDC(hdcDest);

    // Create a bitmap for each DC. DCs are required for a number of
    // GDI functions.

    // Monochrome DC
    bmAndBack   = CreateBitmap(ptSize.x, ptSize.y, 1, 1, NULL);

    // Monochrome DC
    bmAndObject = CreateBitmap(ptSize.x, ptSize.y, 1, 1, NULL);

    bmAndMem    = CreateCompatibleBitmap(hdcDest, ptSize.x, ptSize.y);
    bmSave      = CreateCompatibleBitmap(hdcDest, ptSize.x, ptSize.y);

    // Each DC must select a bitmap object to store pixel data.
    bmBackOld   = (HBITMAP)SelectObject(hdcBack, bmAndBack);
    bmObjectOld = (HBITMAP)SelectObject(hdcObject, bmAndObject);
    bmMemOld    = (HBITMAP)SelectObject(hdcMem, bmAndMem);
    bmSaveOld   = (HBITMAP)SelectObject(hdcSave, bmSave);

    // Set proper mapping mode.
    SetMapMode(hdcSrc, GetMapMode(hdcDest));

    // Save the bitmap sent here, because it will be overwritten.
    //BitBlt(hdcSave, 0, 0, ptSize.x, ptSize.y, hdcSrc, 0, 0, SRCCOPY);
    BitBlt(hdcSave, 0, 0, ptSize.x, ptSize.y, hdcSrc, nXOriginSrc, nYOriginSrc, SRCCOPY);

    // Set the background color of the source DC to the color.
    // contained in the parts of the bitmap that should be transparent
    cColor = SetBkColor(hdcSrc, crTransparent);

    // Create the object mask for the bitmap by performing a BitBlt
    // from the source bitmap to a monochrome bitmap.
    BitBlt(hdcObject, 0, 0, ptSize.x, ptSize.y, hdcSrc, nXOriginSrc, nYOriginSrc, SRCCOPY);

    // Set the background color of the source DC back to the original
    // color.
    SetBkColor(hdcSrc, cColor);

    // Create the inverse of the object mask.
    BitBlt(hdcBack, 0, 0, ptSize.x, ptSize.y, hdcObject, 0, 0, NOTSRCCOPY);

    // Copy the background of the main DC to the destination.
    BitBlt(hdcMem, 0, 0, ptSize.x, ptSize.y, hdcDest, nXOriginDest, nYOriginDest, SRCCOPY);

    // Mask out the places where the bitmap will be placed.
    BitBlt(hdcMem, 0, 0, ptSize.x, ptSize.y, hdcObject, 0, 0, SRCAND);

    // Mask out the transparent colored pixels on the bitmap.
    BitBlt(hdcSrc, nXOriginSrc, nYOriginSrc, ptSize.x, ptSize.y, hdcBack, 0, 0, SRCAND);

    // XOR the bitmap with the background on the destination DC.
    BitBlt(hdcMem, 0, 0, ptSize.x, ptSize.y, hdcSrc, nXOriginSrc, nYOriginSrc, SRCPAINT);

    // Copy the destination to the screen.
    BitBlt(hdcDest, nXOriginDest, nYOriginDest, ptSize.x, ptSize.y, hdcMem, 0, 0, SRCCOPY);

    // Place the original bitmap back into the bitmap sent here.
    BitBlt(hdcSrc, nXOriginSrc, nYOriginSrc, ptSize.x, ptSize.y, hdcSave, 0, 0, SRCCOPY);

    // Delete the memory bitmaps.
    DeleteObject(SelectObject(hdcBack, bmBackOld));
    DeleteObject(SelectObject(hdcObject, bmObjectOld));
    DeleteObject(SelectObject(hdcMem, bmMemOld));
    DeleteObject(SelectObject(hdcSave, bmSaveOld));

    // Delete the memory DCs.
    DeleteDC(hdcMem);
    DeleteDC(hdcBack);
    DeleteDC(hdcObject);
    DeleteDC(hdcSave);

    return TRUE;
}

웹에서 서핑해서 긁어 오면 다 되는것이 아니었다.
위의 소스는 긁어 온것이 정상적인 TransparentBlt기능을 못하여 수정하고 테스트한 결과이다.