请教给位高手:我想给对话框绘制背景,但是不绘制控件的位置。我用rgn1.CreateRectRgnIndirect(rect1);
rgn2.CreateRectRgnIndirect(rect2);
if(rgn1.CombineRgn(&rgn1,&rgn2,RGN_XOR) == ERROR)
{
return;
}
裁剪出来了除了控件的位置,我要怎么把图片绘制到对话框上?
m_brush.CreateSolidBrush(RGB(255,255,255));
pDC->FillRgn(&rgn1,&m_brush);
用这个只是绘制颜色,这个没问题,但是图片的话要怎么贴到对话框上呢?
rgn2.CreateRectRgnIndirect(rect2);
if(rgn1.CombineRgn(&rgn1,&rgn2,RGN_XOR) == ERROR)
{
return;
}
裁剪出来了除了控件的位置,我要怎么把图片绘制到对话框上?
m_brush.CreateSolidBrush(RGB(255,255,255));
pDC->FillRgn(&rgn1,&m_brush);
用这个只是绘制颜色,这个没问题,但是图片的话要怎么贴到对话框上呢?
m_BmpBkground.LoadBitmap(IDB_SKY);
头文件里:
CBitmap m_BmpBkground
void C八嘎Dlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // 用于绘制的设备上下文SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);// 使图标在工作区矩形中居中
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;// 绘制图标
dc.DrawIcon(x, y, m_hIcon);
}
else
{
// CDialogEx::OnPaint();
CRect rect;
GetClientRect(&rect);
CPaintDC dc(this); //对话框的dc
CDC dcMem; BITMAP bitMap;
m_BmpBkground.GetBitmap(&bitMap); dcMem.CreateCompatibleDC(&dc);
CBitmap *pbmpOld=dcMem.SelectObject(&m_BmpBkground); dc.StretchBlt(0,0,rect.Width(),rect.Height(),&dcMem,0,0,bitMap.bmWidth,bitMap.bmHeight,SRCCOPY);}
}