void DrawDisabledButton(TDC& dc, const TRect& rc)
{
// create a monochrome memory DC
//
TMemoryDC ddc;
TBitmap bmp(ddc, rc.Width(), rc.Height());
ddc.SelectObject(bmp);
// build a mask
//
ddc.PatBlt(0, 0, rc.Width(), rc.Height(), WHITENESS);
dc.SetBkColor(TColor::Sys3dFace);
ddc.BitBlt(0, 0, rc.Width(), rc.Height(), dc, rc.left, rc.top, SRCCOPY);
dc.SetBkColor(TColor::Sys3dHilight);
ddc.BitBlt(0, 0, rc.Width(), rc.Height(), dc, rc.left, rc.top, SRCPAINT);
// Copy the image from the toolbar into the memory DC
// and draw it (grayed) back into the toolbar.
//
dc.FillRect(rc, TBrush(TColor::Sys3dFace));
dc.SetBkColor(RGB(0, 0, 0));
dc.SetTextColor(RGB(255, 255, 255));
TBrush brShadow(TColor::Sys3dShadow);
TBrush brHilight(TColor::Sys3dHilight);
dc.SelectObject(brHilight);
dc.BitBlt(rc.left+1, rc.top+1, rc.Width(), rc.Height(), ddc, 0, 0, 0x00E20746L);
dc.SelectObject(brShadow);
dc.BitBlt(rc.left, rc.top, rc.Width(), rc.Height(), ddc, 0, 0, 0x00E20746L);
// reset DCs
//
dc.RestoreBrush();
dc.RestoreBrush();
ddc.RestoreBitmap();
}
void AFXAPI AfxGetGrayBitmap(const CBitmap &rSrc, CBitmap *pDest, COLORREF crBackground)
{
ASSERT(pDest);
ASSERT_KINDOF(CBitmap, pDest);
BITMAP bm;
CDC dcMem, dcMask;
COLORREF cr;
CBitmap bmpMask, *pOldMask, *pOldMem;
const DWORD CP_ROP = 0xE20746;
CBrush brHighLight(::GetSysColor(COLOR_3DHIGHLIGHT)),
brShadow(::GetSysColor(COLOR_3DSHADOW)), *pbr;
if(dcMem.CreateCompatibleDC(NULL) &&
dcMask.CreateCompatibleDC(NULL))
{
const_cast<CBitmap &>(rSrc).GetBitmap(&bm);
pDest->DeleteObject();
if(pDest->CreateBitmap(bm.bmWidth, bm.bmHeight, bm.bmPlanes, bm.bmBitsPixel, NULL) &&
bmpMask.CreateBitmap(bm.bmWidth, bm.bmHeight, 1, 1, NULL))
{
pOldMem = dcMem.SelectObject(const_cast<CBitmap *>(&rSrc));
pOldMask = dcMask.SelectObject(&bmpMask);
ASSERT(pOldMem && pOldMask);
if(!pOldMem || !pOldMask)
return;
// Make the upper left corner pixel the "transparent" pixel
cr = dcMem.SetBkColor(dcMem.GetPixel(0, 0));
dcMask.BitBlt(0, 0, bm.bmWidth, bm.bmHeight, &dcMem, 0, 0, SRCCOPY);
// Make white pixels transparent too
dcMem.SetBkColor(RGB(255, 255, 255));
dcMask.BitBlt(0, 0, bm.bmWidth, bm.bmHeight, &dcMem, 0, 0, NOTSRCERASE);
if(dcMem.SelectObject(pDest))
{
dcMem.FillSolidRect(0, 0, bm.bmWidth, bm.bmHeight, crBackground);
dcMem.SetBkColor(RGB(255, 255, 255));
pbr = dcMem.SelectObject(&brHighLight);
dcMem.BitBlt(1, 1, bm.bmWidth, bm.bmHeight, &dcMask, 0, 0, CP_ROP);
dcMem.SelectObject(&brShadow);
dcMem.BitBlt(0, 0, bm.bmWidth, bm.bmHeight, &dcMask, 0, 0, CP_ROP);
dcMem.SelectObject(pbr);
dcMem.SetBkColor(cr);
}
dcMask.SelectObject(pOldMask);
dcMem.SelectObject(pOldMem);
}
}
}
void AFXAPI AfxDrawGrayBitmap(CDC *pDC, int x, int y, const CBitmap &rSrc, COLORREF crBackground)
{
ASSERT(pDC);
ASSERT_KINDOF(CDC, pDC);
BITMAP bm;
CDC dcMem, dcMask;
COLORREF cr;
CBitmap bmpMask, *pOldMask, *pOldMem;
const DWORD CP_ROP = 0xE20746;
CBrush brHighLight(::GetSysColor(COLOR_3DHIGHLIGHT)),
brShadow(::GetSysColor(COLOR_3DSHADOW)), *pbr;
if(dcMem.CreateCompatibleDC(pDC) &&
dcMask.CreateCompatibleDC(pDC) &&
const_cast<CBitmap &>(rSrc).GetBitmap(&bm) &&
bmpMask.CreateBitmap(bm.bmWidth, bm.bmHeight, 1, 1, NULL))
{
pOldMem = dcMem.SelectObject(const_cast<CBitmap *>(&rSrc));
pOldMask = dcMask.SelectObject(&bmpMask);
ASSERT(pOldMem && pOldMask);
if(!pOldMem || !pOldMask)
return;
cr = dcMem.SetBkColor(dcMem.GetPixel(0, 0));
dcMask.BitBlt(0, 0, bm.bmWidth, bm.bmHeight, &dcMem, 0, 0, SRCCOPY);
dcMem.SetBkColor(RGB(255, 255, 255));
dcMask.BitBlt(0, 0, bm.bmWidth, bm.bmHeight, &dcMem, 0, 0, NOTSRCERASE);
pDC->FillSolidRect(x, y, bm.bmWidth, bm.bmHeight, crBackground);
pDC->SetBkColor(RGB(255, 255, 255));
pbr = pDC->SelectObject(&brHighLight);
pDC->BitBlt(x + 1, y + 1, bm.bmWidth, bm.bmHeight, &dcMask, 0, 0, CP_ROP);
pDC->SelectObject(&brShadow);
pDC->BitBlt(x, y, bm.bmWidth, bm.bmHeight, &dcMask, 0, 0, CP_ROP);
pDC->SelectObject(pbr);
pDC->SetBkColor(cr);
dcMask.SelectObject(pOldMask);
}
}