MFC多文档应用程序常用知识点
1、修改左上角圆形按图标。可以将要显示的图标放在资源中加载，也可以将图标文件放在程序目录下加载。
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CRect rt1;
m_wndRibbonBar.GetClientRect(&rt1);
CMFCRibbonApplicationButton * pAppButton = m_wndRibbonBar.GetApplicationButton();
HBITMAP hBitmap = (HBITMAP)::LoadImage(NULL,
CScale3DCGlobal::GetAppllicationPath()+ _T("\\user\\admin.bmp"),
IMAGE_BITMAP,
0, 0, //原始大小
LR_DEFAULTCOLOR | LR_CREATEDIBSECTION | LR_LOADFROMFILE);
pAppButton->SetImage(hBitmap);以上代码放在MainFrame.cpp的OnCreate中执行。
２、在Ribbon中加载自己的控件
CRect rt(10, rt1.bottom+3, 460, rt1.bottom + 3+107);
m_LedString.Create(_T("000000"), 0, rt, &m_wndRibbonBar, IDC_LED1);
m_LedString.SetStringPost(25, 21);
m_LedString.SetStringAmp(0.3);
m_LedString.SetTip(_T("COM4:9600 XK3190A9 COM2:YH-5大屏幕"));
m_LedString.SetUnit(_T("公斤"));3、在一个按钮点击事件中创建新的视图
if (m_bIsScaleWeightView)
{
m_pScaleWeightChildFrame->ActivateFrame();//激活已存在的视图
m_pScaleWeightChildFrame->SetFocus();
return;
}
m_pScaleWeightChildFrame = new CScale3DCChildFrame;
CCreateContext context;
context.m_pNewViewClass = RUNTIME_CLASS(CScale3DCScaleWeightView);
if (!m_pScaleWeightChildFrame->LoadFrame(IDR_MAINFRAME,
WS_OVERLAPPEDWINDOW | FWS_PREFIXTITLE, AfxGetMainWnd(), &context))
return;
m_pScaleWeightChildFrame->InitialUpdateFrame(NULL, TRUE);
m_bIsScaleWeightView = TRUE;//防止重复创建视图4、通过工具栏隐藏和显示面板
BOOL CScale3DCMainFrame::OnCloseDockingPane(CDockablePane* pWnd)//虚函数
{
// TODO: 在此添加专用代码和/或调用基类
m_bVideoShow = TRUE;
m_bDataGridShow = TRUE;
return CMDIFrameWndEx::OnCloseDockingPane(pWnd);
}
//虚函数
BOOL CScale3DCMainFrame::OnCloseMiniFrame(CPaneFrameWnd* pWnd)
{
// TODO: 在此添加专用代码和/或调用基类
CWnd* pwnd = pWnd->GetPane();
if (pwnd->IsKindOf(RUNTIME_CLASS(CTabbedPane)))//多个窗口
{
CTabbedPane* tabpane = (CTabbedPane *)pwnd;
CMFCBaseTabCtrl* pTabWnd = tabpane->GetUnderlyingWindow();
//关闭所有的面板
for (int i = 0; i < pTabWnd->GetTabsNum(); i++)
{
CDockablePane* pBar = DYNAMIC_DOWNCAST(CDockablePane,
pTabWnd->GetTabWnd(i));
if (pBar != NULL)
{
ASSERT_VALID(pBar);
//将关闭消息加入该DockPane队列，等待完成本函数后关闭
::PostMessageA(pBar->m_hWnd, WM_CLOSE, 0, 0);
}
}
}
else
{ //单个窗口
CDockablePane* pane = (CDockablePane *)pwnd;
if (pane->IsKindOf(RUNTIME_CLASS(CDockablePane)) ||
pane->IsKindOf(RUNTIME_CLASS(CPane))
&& pane->IsKindOf(RUNTIME_CLASS(CPaneFrameWnd)))
{
//将关闭消息加入该DockPane队列，等待完成本函数后关闭
::PostMessageA(pWnd->GetPane()->m_hWnd, WM_CLOSE, 0, 0);
}
}
m_bVideoShow = TRUE;
m_bDataGridShow = TRUE;
return TRUE;
//return CMDIFrameWndEx::OnCloseMiniFrame(pWnd);
}
void CScale3DCMainFrame::OnButtonVideo()
{
if (!m_bVideoShow)
{
m_bVideoShow = TRUE;
m_wndVideoPanel.ShowPane(FALSE, FALSE, FALSE);
}
else if (m_wndVideoPanel.GetSafeHwnd())
{
m_bVideoShow = FALSE;
m_wndVideoPanel.ShowPane(TRUE, FALSE, TRUE);
}
else
{
BOOL bNameValid;
CString strPropertiesWnd;
bNameValid = strPropertiesWnd.LoadString(IDS_PROPERTIES_WND);
ASSERT(bNameValid);
if (!m_wndVideoPanel.Create(strPropertiesWnd, this,
CRect(0, 0, 200, 200),
TRUE,
ID_VIEW_PROPERTIESWND,
WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN |
CBRS_RIGHT | CBRS_FLOAT_MULTI))
{
TRACE("未能创建%s窗口\n", strPropertiesWnd);
return;
}
m_wndVideoPanel.EnableDocking(CBRS_ALIGN_ANY);
DockPane(&m_wndVideoPanel);
m_bVideoShow = FALSE;
}
RecalcLayout();
}
void CScale3DCMainFrame::OnButtonDatagrid()
{
// TODO: 在此添加命令处理程序代码
if (!m_bDataGridShow)
{
m_bDataGridShow = TRUE;
m_wndDataGridPanel.ShowPane(FALSE, FALSE, FALSE);
}
else if (m_wndDataGridPanel.GetSafeHwnd())
{
m_bDataGridShow = FALSE;
m_wndDataGridPanel.ShowPane(TRUE, FALSE, TRUE);
}
else
{
BOOL bNameValid;
CString strPropertiesWnd;
bNameValid = strPropertiesWnd.LoadString(IDS_OUTPUT_WND);
ASSERT(bNameValid);
if (!m_wndDataGridPanel.Create(strPropertiesWnd, this,
CRect(0, 0, 200, 200),
TRUE, ID_VIEW_PROPERTIESWND,
WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN |
CBRS_RIGHT | CBRS_FLOAT_MULTI))
{
TRACE("未能创建%s窗口\n", strPropertiesWnd);
return;
}
m_wndDataGridPanel.EnableDocking(CBRS_ALIGN_ANY);
DockPane(&m_wndDataGridPanel);
m_bDataGridShow = FALSE;
}
RecalcLayout();
}5、设置视图的标签标题文字
BOOL CScale3DCChildFrame::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: 在此处通过修改 CREATESTRUCT cs 来修改窗口类或样式
cs.style &= ~(LONG)FWS_ADDTOTITLE;
if( !CMDIChildWndEx::PreCreateWindow(cs) )
return FALSE;
return TRUE;
}void CScale3DCScaleWeightView::OnInitialUpdate()
{
CFormView::OnInitialUpdate();
CMDIChildWndEx * pFrame = (CMDIChildWndEx*)this->GetParentFrame();
CScale3DCChildFrame * pMidFrame = (CScale3DCChildFrame*)pFrame;
pMidFrame->SetWindowText(_T("称重数据区"));
// TODO: 在此添加专用代码和/或调用基类
}6、改变视图的背景颜色
BOOL CScale3DCScaleWeightView::OnEraseBkgnd(CDC* pDC)
{
// TODO: 在此添加消息处理程序代码和/或调用默认值
CRect rt;
GetClientRect(&rt);
CBrush brush;
brush.CreateSolidBrush(RGB(255, 255, 255));
CBrush * pOldBrush = pDC->SelectObject(&brush);
pDC->FillRect(&rt, &brush);
pDC->SelectObject(pOldBrush);
return TRUE;
//return CFormView::OnEraseBkgnd(pDC);
}7、在一个视图中创建另一个视图
CScale3DCMainFrame * pMainFrame = (CScale3DCMainFrame*)AfxGetMainWnd(); CScale3DCMainControlPanel2 * pPanel = &pMainFrame->m_wndMainControlPanel; pPanel->m_wndMainToolbarDlg->CreateScaleWeightView();
8、遍历主框架中的子框架
void CScale3DCMainFrame::SearchAllMDIFrame()
{
CMDIFrameWnd *pFrame = (CMDIFrameWnd*)::AfxGetMainWnd();
if (pFrame)
{
CMDIChildWnd *pOldChildFrame = pFrame->MDIGetActive();
CMDIChildWnd *pChildFrame = pOldChildFrame;
if (pChildFrame)
{
do {
CString strCaption;
pChildFrame->GetWindowText(strCaption);
if (_T("主控界面区") == strCaption)
{
CView * pView= pChildFrame->GetActiveView();
//消息发向主控视图
pView->SendMessage(WM_STARTSCALEWEIGHTVIEW, 0, 0);
return;
}
pFrame->MDINext();
pChildFrame = pFrame->MDIGetActive();
} while (pChildFrame != pOldChildFrame);
}
}
}
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