我创建了一个位图,把它选到内存设备环境中,发现只能用单色,要想用彩色,我该怎么创建??CDC m_MemDC;
CPaintDC dc(this);
m_MemDC.CreateCompatibleDC(&dc);
HBITMAP m_hBitmap=CreateCompatibleBitmap(m_MemDC.m_hDC,400,300);
SelectObject(m_MemDC.m_hDC,m_hBitmap);
CPaintDC dc(this);
m_MemDC.CreateCompatibleDC(&dc);
HBITMAP m_hBitmap=CreateCompatibleBitmap(m_MemDC.m_hDC,400,300);
SelectObject(m_MemDC.m_hDC,m_hBitmap);
{
CDC memDC;//定义一个兼容DC
memDC.CreateCompatibleDC(pDC);//创建DC
CBitmap bmpDraw;
bmpDraw.LoadBitmap(ID_BMP);//装入DDB
CBitmap* pbmpOld=memDC.SelectObject(&bmpDraw);//保存原有DDB,并选入新DDB入DC
pDC->BitBlt(0,0,20,20,&memDC,0,0,SRCCOPY);//将源DC中(0,0,20,20)复制到目的DC(0,0,20,20)
pDC->BitBlt(20,20,40,40,&memDC,0,0,SRCAND);//将源DC中(0,0,20,20)和目的DC(20,20,40,40)中区域进行AND操作
memDC.SelectObject(pbmpOld);//选入原DDB
}
if(!cbTemp.CreateBitmap(bmpWidth,bmpHeight,1,24,NULL))
{
return;
}
BITMAP biTemp;
cbTemp.GetBitmap(&biTemp);
//biTemp 就是你要的空的彩色位图
CPaintDC dc(this);
m_MemDC.CreateCompatibleDC(&dc);
HBITMAP m_hBitmap=CreateCompatibleBitmap(dc.m_hDC,400,300);
//here use dc instead of memdc now try again
SelectObject(m_MemDC.m_hDC,m_hBitmap);
CBitmap bmpMem
bmpMem.CreateCompatibleBitmap(&dc,....,)