void UIPicButton::SetBitmapResources (bool bSingleBitmap, unsigned int wResbase, unsigned int wReshighlight, unsigned int wResdown)
{
// Load the bitmap resources. Three resources are required, one for the base button image, one for the
// highlighted button image, and one for the mouse down button image.
g_hbmBase = LoadBitmapResource (wResbase);
g_hbmHighlight = LoadBitmapResource (wReshighlight);
g_hbmDown = LoadBitmapResource (wResdown);
// The single bitmap flag tells this class how to draw the button bitmap. A single image is where the entire button
// image is provided in it's entirity within the provided resources. Therefore the width and height of the button
// is restricted to that in the resource. If singlebitmap is false then a 3 column tiled bitmap is assumed where the
// columns 1 and 3 of the provided bitmap are the first and last segments and column 2 is the middle segment which
// is repeated as many times as the requested width.
g_bSinglebitmap = bSingleBitmap;
}
BOOL CBitmapControl::SetBitmapResource(void)
{
FreeBitmapResource();
if (LoadBitmapResource())
{
if (!(m_dwStyle & SBS_NOSIZECONTROL))
{
int nWidth = m_nBitmapWidth;
int nHeight = m_nBitmapHeight;
CRect crClient;
GetClientRect(&crClient);
int nDeltaX = nWidth - crClient.Width();
int nDeltaY = nHeight - crClient.Height();
int nDeltaLeft = nDeltaX/2;
int nDeltaRight = (nDeltaX+1)/2;
int nDeltaTop = nDeltaY/2;
int nDeltaBottom = (nDeltaY+1)/2;
CRect crWindow;
GetWindowRect(&crWindow);
GetParent()->ScreenToClient(crWindow);
crWindow.left -= nDeltaLeft;
crWindow.top -= nDeltaTop;
crWindow.right += nDeltaRight;
crWindow.bottom += nDeltaBottom;
SetWindowPos(NULL,
crWindow.left,
crWindow.top,
crWindow.Width(),
crWindow.Height(),
SWP_NOZORDER);
}
return TRUE;
}
return FALSE;
}
void CBitmapControl::OnPaint()
{
CPaintDC dc(this); // device context for painting
CRect crUpdate(&dc.m_ps.rcPaint);
if (!crUpdate.IsRectEmpty())
{
if (LoadBitmapResource())
{
CRect crClient;
GetClientRect(&crClient);
CRect crBitmap(0, 0, (int)m_nBitmapWidth, (int)m_nBitmapHeight);
CRect crDraw;
if (m_dwStyle & SBS_SIZEBITMAP)
{
crDraw = crClient;
}
else
{
crDraw = crBitmap;
crDraw.OffsetRect(crClient.left, crClient.top);
}
int nOldMapMode = dc.SetMapMode(MM_TEXT);
CPalette* pOldPalette;
CPalette* pCurrentPalette = CPalette::FromHandle(m_pDDB->GetPalette());
if ((pOldPalette = dc.SelectPalette(pCurrentPalette, FALSE)) != NULL)
{
dc.RealizePalette();
CDC cdcBitmap;
if ((cdcBitmap.CreateCompatibleDC(&dc)) != NULL)
{
CPalette *pOldBitmapPalette;
if ((pOldBitmapPalette = cdcBitmap.SelectPalette(pCurrentPalette, FALSE)) != NULL)
{
cdcBitmap.RealizePalette();
cdcBitmap.SetMapMode(MM_TEXT);
CBitmap *pOldBitmap;
if ((pOldBitmap = cdcBitmap.SelectObject(CBitmap::FromHandle(m_pDDB->GetBitmap()))) != NULL)
{
int nOldStretchMode = dc.SetStretchBltMode(STRETCH_DELETESCANS);
dc.StretchBlt(
crDraw.left,
crDraw.top,
crDraw.Width(),
crDraw.Height(),
&cdcBitmap,
0,
0,
m_nBitmapWidth,
m_nBitmapHeight,
SRCCOPY);
dc.SetStretchBltMode(nOldStretchMode);
cdcBitmap.SelectObject(pOldBitmap);
}
cdcBitmap.SelectPalette(pOldBitmapPalette, FALSE);
}
}
dc.SelectPalette(pOldPalette, FALSE);
}
dc.SetMapMode(nOldMapMode);
}
}
}
