Menu MFC-选中/取消选中菜单项
我正在制作一个MFC应用程序,其中有两个对应于两个工具栏的菜单选项-菜单选项切换工具栏的可见性。如果工具栏当前可见,我需要检查菜单选项。以下是到目前为止我得到的信息:Menu MFC-选中/取消选中菜单项,menu,mfc,Menu,Mfc,我正在制作一个MFC应用程序,其中有两个对应于两个工具栏的菜单选项-菜单选项切换工具栏的可见性。如果工具栏当前可见,我需要检查菜单选项。以下是到目前为止我得到的信息: BEGIN_MESSAGE_MAP(CLevelPackEditApp, CWinAppEx) // Standard file based document commands ON_UPDATE_COMMAND_UI(ID_LEVEL_PROPERTIES, &CLevelPackEditApp::OnV
BEGIN_MESSAGE_MAP(CLevelPackEditApp, CWinAppEx)
// Standard file based document commands
ON_UPDATE_COMMAND_UI(ID_LEVEL_PROPERTIES, &CLevelPackEditApp::OnViewLevelProperties)
END_MESSAGE_MAP()
void CLevelPackEditApp::OnViewLevelProperties(CCmdUI* pCmdUI)
{
// Get a handle to the main window
CMainFrame* main = ((CMainFrame*)m_pMainWnd);
// Get a handle to the level properties toolbar for the main window
CLevelProperties* obj = main->GetLevelProperties();
if (obj->IsWindowVisible())
{
pCmdUI->SetCheck(0);
obj->ShowPane(false, false, false);
} else {
pCmdUI->SetCheck();
obj->ShowPane(true, false, true);
}
}
它起作用了……有点。它会在选中和未选中之间切换,但每秒会切换多次-我怀疑选中菜单项会导致菜单更新,因此它未选中,因此它会更新,因此它会选中,aa然后重复。我该如何解决这个问题?更新命令上的
命令\u UI()
函数应该只设置/清除复选标记;仅在单击按钮时调用obj->ShowPane()
:
BEGIN_MESSAGE_MAP(CLevelPackEditApp, CWinAppEx)
// Standard file based document commands
ON_COMMAND_UI(ID_LEVEL_PROPERTIES, &CLevelPackEditApp::OnViewLevelProperties)
ON_UPDATE_COMMAND_UI(ID_LEVEL_PROPERTIES, &CLevelPackEditApp::OnUpdateViewLevelProperties)
END_MESSAGE_MAP()
void CLevelPackEditApp::OnViewLevelProperties()
{
// Get a handle to the main window
CMainFrame* main = ((CMainFrame*)m_pMainWnd);
// Get a handle to the level properties toolbar for the main window
CLevelProperties* obj = main->GetLevelProperties();
if (obj->IsWindowVisible())
obj->ShowPane(false, false, false);
else
obj->ShowPane(true, false, true);
}
void CLevelPackEditApp::OnUpdateViewLevelProperties(CCmdUI* pCmdUI)
{
// Get a handle to the main window
CMainFrame* main = ((CMainFrame*)m_pMainWnd);
// Get a handle to the level properties toolbar for the main window
CLevelProperties* obj = main->GetLevelProperties();
pCmdUI->SetCheck(obj->IsWindowVisible());
}
我把它放在代码中,但出于某种原因,从来没有调用过OnUpdateLevel属性。