mfc重绘标题栏和菜单栏
时间: 2023-06-07 11:01:44 浏览: 265
在MFC中,我们可以通过对窗口的WM_NCPAINT、WM_PAINT、WM_ERASEBKGND等消息进行处理来实现重绘标题栏和菜单栏。
首先,我们需要在类的声明中添加自定义消息。例如:
#define WM_CUSTOM_TITLEBAR_REDRAW WM_USER+1 //自定义消息,重绘标题栏
#define WM_CUSTOM_MENUBAR_REDRAW WM_USER+2 //自定义消息,重绘菜单栏
然后在窗口创建时,通过对NC_PAINT和WM_PAINT消息的处理来实现标题栏和菜单栏的重绘。例如:
void CMyFrameWnd::OnNcPaint()
{
//获取窗口的DC
CDC* pDC = GetWindowDC();
//重绘标题栏
SendMessage(WM_CUSTOM_TITLEBAR_REDRAW, (WPARAM)pDC->m_hDC);
//重绘菜单栏
SendMessage(WM_CUSTOM_MENUBAR_REDRAW, (WPARAM)pDC->m_hDC);
//释放DC
ReleaseDC(pDC);
}
void CMyFrameWnd::OnPaint()
{
CPaintDC dc(this);
//绘制标题栏
SendMessage(WM_CUSTOM_TITLEBAR_REDRAW, (WPARAM)dc.m_hDC);
//绘制菜单栏
SendMessage(WM_CUSTOM_MENUBAR_REDRAW, (WPARAM)dc.m_hDC);
}
接下来,我们需要在窗口的消息映射中添加对自定义消息的处理。例如:
BEGIN_MESSAGE_MAP(CMyFrameWnd, CFrameWnd)
ON_MESSAGE(WM_CUSTOM_TITLEBAR_REDRAW, OnCustomTitlebarRedraw) //重绘标题栏
ON_MESSAGE(WM_CUSTOM_MENUBAR_REDRAW, OnCustomMenubarRedraw) //重绘菜单栏
END_MESSAGE_MAP()
LRESULT CMyFrameWnd::OnCustomTitlebarRedraw(WPARAM wParam, LPARAM lParam)
{
HDC hDC = (HDC)wParam;
//在hDC上重绘标题栏
...
return 0;
}
LRESULT CMyFrameWnd::OnCustomMenubarRedraw(WPARAM wParam, LPARAM lParam)
{
HDC hDC = (HDC)wParam;
//在hDC上重绘菜单栏
...
return 0;
}
通过以上步骤,我们就可以实现对MFC窗口标题栏和菜单栏的重绘。当然,具体的重绘方式和效果可以根据实际需求进行调整和优化。
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