三、程序代码
/////////////////////////////////////////////////////
int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CMDIFrameWnd::OnCreate(lpCreateStruct) == -1)
return -1;
if (!m_wndToolBar.CreateEx(this, TBSTYLE_FLAT, WS_CHILD |
WS_VISIBLE | CBRS_TOP| CBRS_GRIPPER |
CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC) ||
!m_wndToolBar.LoadToolBar(IDR_MAINFRAME))
{
TRACE0("Failed to create toolbar/n");
return -1; // fail to create
}
if (!m_wndStatusBar.Create(this) ||!m_wndStatusBar.SetIndicators(indicators, sizeof(indicators)/sizeof(UINT)))
{
TRACE0("Failed to create status bar/n");
return -1; // fail to create
}
// TODO: Delete these three lines if you don't want the toolbar to
// be dockable
m_wndToolBar.EnableDocking(CBRS_ALIGN_ANY);
EnableDocking(CBRS_ALIGN_ANY);
DockControlBar(&m_wndToolBar);
CDC dc, memdc;
dc.m_hDC=::GetDC(this->m_hWndMDIClient);
CRect rect;
CBitmap bitmap;
BITMAP szbitmap;
bitmap.LoadBitmap(IDB_BITMAP1);
bitmap.GetObject(sizeof(BITMAP),&szbitmap);
CSize size(szbitmap.bmWidth,szbitmap.bmHeight);
memdc.CreateCompatibleDC(&dc);
CBitmap *oldbitmap=memdc.SelectObject(&bitmap);
GetClientRect(&rect);
StretchBlt(dc.m_hDC,0,0,rect.Width(),rect.Height(),
memdc.m_hDC,0,0,size.cx,size.cy,SRCCOPY);
memdc.SelectObject(oldbitmap);
memdc.DeleteDC();
dc.DeleteDC();
return 0;
}
BOOL CMainFrame::PreTranslateMessage(MSG* pMsg)
{
// TODO: Add your specialized code here and/or call the base class
if(pMsg->hwnd==m_hWndMDIClient && pMsg->message==WM_PAINT)
PostMessage(WM_PAINT);
return CMDIFrameWnd::PreTranslateMessage(pMsg);
}
void CMainFrame::OnPaint()
{
CDC dc, memdc;
dc.m_hDC=::GetDC(this->m_hWndMDIClient);
CRect rect;
CBitmap bitmap;
BITMAP szbitmap;
bitmap.LoadBitmap(IDB_BITMAP1);
bitmap.GetObject(sizeof(BITMAP),&szbitmap);
CSize size(szbitmap.bmWidth,szbitmap.bmHeight);
memdc.CreateCompatibleDC(&dc);
CBitmap *oldbitmap=memdc.SelectObject(&bitmap);
GetClientRect(&rect);
StretchBlt(dc.m_hDC,0,0,rect.Width(),rect.Height(),
memdc.m_hDC,0,0,size.cx,size.cy,SRCCOPY);
memdc.SelectObject(oldbitmap);
memdc.DeleteDC();
dc.DeleteDC();
CMDIFrameWnd::OnPaint();
} |
四、小结
本实例通过在MDI应用程序的主框架中显示彩色位图作为背景，讲述了图像资源显示的方法，读者朋友可以以此展开，将彩色位图显示到不同的控件上，如按钮、对话框等，同时灵活运用各种显示方式，取得一些意想不到的效果。
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