MFC_禁止标题栏重绘,改变标题栏，双缓冲标题栏贴图(转载)

需要在标题栏上贴图，更换标题栏背景的时候，不想要标题栏显示颜色，尤其拉动改变窗体大小的时候，所以需要禁止标题栏重绘的方法。

只需要 处理WM_NCPAINT消息就好了，消息处理函数OnNcPaint中去掉CDialog::OnNcPaint()，

标题栏更换颜色，标题栏贴图，窗体其他位置贴图也可以用这里的贴图函数

//*******************************************************************//

void CMyDlg::DrawTitleBar(CDC *pDC)
{
CDC memDC;
CBitmap bmp;
CRect rect, rtTitle;
CPoint point;
GetClientRect(rect);

//获取标题栏大小
rtTitle.left = GetSystemMetrics(SM_CXFRAME);
rtTitle.top = GetSystemMetrics(SM_CYFRAME);
rtTitle.right = rect.right - rect.left - GetSystemMetrics(SM_CXFRAME);
rtTitle.bottom = rtTitle.top + GetSystemMetrics(SM_CYSIZE);

point.x = rect.right + GetSystemMetrics(SM_CXFRAME);
point.y = 30;

memDC.CreateCompatibleDC(NULL);
bmp.CreateCompatibleBitmap(pDC,point.x,point.y);
CBitmap *pOldBit=memDC.SelectObject(&bmp);

//背景颜色
memDC.FillSolidRect(0,0,point.x,point.y,RGB(125,0,125));

////贴图
//CBitmap pic;
//pic.LoadBitmap(IDB_BITMAP1);
//ShowBitmap(&memDC,0,0, rtTitle.right, 30, pic);

pDC->BitBlt(0,0,point.x,point.y,&memDC,0,0,SRCCOPY);

pOldBit->DeleteObject();
memDC.DeleteDC();
bmp.DeleteObject();

}

LRESULT CMyDlg::DefWindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
//return CDialog::DefWindowProc(message, wParam, lParam);

LRESULT lrst=CDialog::DefWindowProc(message, wParam, lParam);

if (message==WM_MOVE||message==WM_PAINT||message==WM_NCPAINT||message==WM_NCACTIVATE ||message == WM_NOTIFY)
{
CDC* pWinDC = GetWindowDC();
if (pWinDC)
DrawTitleBar(pWinDC);
ReleaseDC(pWinDC);
}
return lrst;

}

void CMyDlg::OnNcPaint()
{
//CDialog::OnNcPaint();
}

BOOL CMyDlg::OnEraseBkgnd(CDC* pDC)
{
return TRUE;

}

void CMyDlg::ShowBitmap(CDC *pDC, int x, int y, int nW, int nH, CBitmap &m_bitmap)
{
CDC memDc, mdc;

memDc.CreateCompatibleDC(NULL);
mdc.CreateCompatibleDC(NULL);

CBitmap memBitmap;
memBitmap.CreateCompatibleBitmap(pDC,nW,nH);
CBitmap *OldBmp = memDc.SelectObject(&m_bitmap);

mdc.SelectObject(&m_bitmap);
memDc.BitBlt(x,y,nW,nH,&mdc,0,0,SRCCOPY);

BITMAP bm;
m_bitmap.GetBitmap( &bm );

//贴图
//pDC->BitBlt(x, y,
// x + bm.bmWidth,y + bm.bmHeight,
// &MemDc,
// 0, 0,
// SRCCOPY);

//拉伸
pDC->StretchBlt(x,y, nW, nH ,&memDc,0,0,
bm.bmWidth,bm.bmHeight,SRCCOPY);

memDc.SelectObject(OldBmp);
memDc.DeleteDC();

}

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/darkduck9989/archive/2007/11/22/1897667.aspx