How to add tabs to CView Class?
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On splitter window tab control not added. tab.Create() function returns true but tab control is not visible on splitter window.
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My childframe class contains 5 splitter windows. In one of splitter window i need to create tab. My app code as follows: BOOL CChildFrame::OnCreateClient ( LPCREATESTRUCT lpcs, CCreateContext* pContext ) { UNREFERENCED_PARAMETER (lpcs); CString csMessage = _T(""); CMainFrame* pMainFrame = (CMainFrame*) theApp.m_pMainWnd; // In floating views mode, do setup specific to it: // Create the appropriate view for it. switch (m_iCreationIndex) { case VIEW1: { // Create a four pane splitter window to use solely to pre-create the needed views. BOOL bStatus = GetSplitterObj()->CreateStatic ( this, 2, // rows 3 // columns ); if (FALSE == bStatus) { TRACE0 ("Failed to create splitter window.\n"); return FALSE; } // Create the five views when the first child frame is created. CSize sizeView (0,0); bStatus = GetSplitterObj()->CreateView ( 0, 0, RUNTIME_CLASS (MyScrollClass), sizeView, pContext ); //like wise view 2, view 3 , view 4 and below is view 5 bStatus = GetSplitterObj()->CreateView ( 1, 1, RUNTIME_CLASS (MyTabClass), sizeView, pContext ); } } } // Disconnect views from splitter window. // They will be attached to the appropriate // floating child frame as they are created. pView1->SetDlgCtrlID (-1); pView1->SetParent (this); pView1->ShowWindow (SW_HIDE); pView2->SetDlgCtrlID (-1); pView2->SetParent (this); pView2->ShowWindow (SW_HIDE); pView3->SetDlgCtrlID (-1); pView3->SetParent (this); pView3->ShowWindow (SW_HIDE); pView4->SetDlgCtrlID (-1); pView4->SetParent (this); pView4->ShowWindow (SW_HIDE); pView5->SetDlgCtrlID(-1); pView5->SetParent(this); pView5->ShowWindow(SW_HIDE); // Distroy the obsolete splitter window. GetSplitterObj()->SetDlgCtrlID (-1); GetSplitterObj()->SetParent (NULL); GetSplitterObj()->ShowWindow (SW_HIDE); GetSplitterObj()->DestroyWindow(); delete GetSplitterObj(); GetSplitterObj(NULL); The above piece of code created 5 splitter windows successfully. In Pane(1,1) i need to add tabs. MyTabClass is derived from CTabView. In MyTabClass, i created tab control as follows as you explained above. int MyTabClass::OnCreate(LPCREATESTRUCT lpCreateStruct) { if (CTabView::OnCreate(lpCreateStruct) == -1) return -1; if (!m_tab.Create(CMFCTabCtrl::STYLE_3D, CRect(0, 0, 0,
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Dear member, in order to read easily, please format your code (use "code" button from above edit area). And, yes,
m_tab.Create(...)return TRUE, but further more, you do nothing ...Hey sorry for the wrong indentation. Its working absolutely fine with same piece of code. The problem is what i mentioned earlier i.e., the coordinates what i provided does not show the tab control in my split window. I changed the values with hit and trail and some portion of tab control is visible on split window.
if (!m_tab.Create(CMFCTabCtrl::STYLE_3D, CRect(500, -500, 900, 300), this, 1, CMFCTabCtrl::LOCATION_BOTTOM))
{
TRACE(_T("Failed to create output tab window\n"));
return -1;
}The values 500,-500,900,300 shown the control on my window. I need to write logic to show this control at the bottom of split window. Thanks for your support. Now, i will tweak this and try to add tabs to it. In case of any block i will post it back.
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Hey sorry for the wrong indentation. Its working absolutely fine with same piece of code. The problem is what i mentioned earlier i.e., the coordinates what i provided does not show the tab control in my split window. I changed the values with hit and trail and some portion of tab control is visible on split window.
if (!m_tab.Create(CMFCTabCtrl::STYLE_3D, CRect(500, -500, 900, 300), this, 1, CMFCTabCtrl::LOCATION_BOTTOM))
{
TRACE(_T("Failed to create output tab window\n"));
return -1;
}The values 500,-500,900,300 shown the control on my window. I need to write logic to show this control at the bottom of split window. Thanks for your support. Now, i will tweak this and try to add tabs to it. In case of any block i will post it back.
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Please correct me if i am wrong. While creating a Split window using below statement.
bStatus = GetSplitterObj()->CreateView ( 1, 1, RUNTIME\_CLASS(CMyTabClass), sizeView, pContext );Above call create Split Window. CMyTabClass is derived from CTabView. So, by default the split window should contain tab splitter at the bottom of the window. Am i right? Because this is how it working in my sample application. In sample i created a Class which derives from CTabView and the window is created with tab splitter in the bottom by default. Later i started adding view using addview(). Then why in my application, splitter is not visible in bottom of the splitter window? why should i explicitly create it using Create()..?
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Please correct me if i am wrong. While creating a Split window using below statement.
bStatus = GetSplitterObj()->CreateView ( 1, 1, RUNTIME\_CLASS(CMyTabClass), sizeView, pContext );Above call create Split Window. CMyTabClass is derived from CTabView. So, by default the split window should contain tab splitter at the bottom of the window. Am i right? Because this is how it working in my sample application. In sample i created a Class which derives from CTabView and the window is created with tab splitter in the bottom by default. Later i started adding view using addview(). Then why in my application, splitter is not visible in bottom of the splitter window? why should i explicitly create it using Create()..?
The code:
bStatus = GetSplitterObj()->CreateView
(
1,
1,
RUNTIME_CLASS(CMyTabClass),
sizeView,
pContext
);it is only put CMyTabClass view into your splitter window. The creation of the tabs inside this CMyTabClass should be done in CMyTabClass::OnCreate, where AddView(...) calling is mandatory. So, you should add at least one tab in order to see something inside your splitter window :)
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The code:
bStatus = GetSplitterObj()->CreateView
(
1,
1,
RUNTIME_CLASS(CMyTabClass),
sizeView,
pContext
);it is only put CMyTabClass view into your splitter window. The creation of the tabs inside this CMyTabClass should be done in CMyTabClass::OnCreate, where AddView(...) calling is mandatory. So, you should add at least one tab in order to see something inside your splitter window :)
Then how come in sample application, below code itself creating a tab bar (horizontal with arrow buttons) in window?
if (CTabView::OnCreate(lpCreateStruct) == -1)
return -1;The same above piece of code in my application not creating that horizontal tab bar unless i create MFCTabCtl tab; tab.create()....
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First of all, create an CTabbedView derived from CTabView.
class CTabbedView : public CTabView
{
protected: // create from serialization only
CTabbedView();
DECLARE_DYNCREATE(CTabbedView)
...
};Then, in OnCreate:
int CTabbedView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CTabView::OnCreate(lpCreateStruct) == -1)
return -1;m\_wndTabs.DestroyWindow(); if (! m\_wndTabs.Create(CMFCTabCtrl::STYLE\_3D, CRect(0, 0, 0, 0), this, 1, CMFCTabCtrl::LOCATION\_BOTTOM)) { TRACE(\_T("Failed to create output tab window\\n")); return -1; } m\_wndTabs.SetFlatFrame(); m\_wndTabs.SetTabBorderSize(0); m\_wndTabs.AutoDestroyWindow(TRUE); AddView(RUNTIME\_CLASS(CYourView1), \_T("Title 1")); AddView(RUNTIME\_CLASS(CYourView2), \_T("Title 2")); return 0;}
and in your childframe, where you create the view inside your splitter, you can put this CTabbedView as any CView:
if(! m\_wndSplitterTab.CreateView(1, 0, RUNTIME\_CLASS(CTabbedView), CSize(0, 0), pContext)) { m\_wndSplitterTab.DestroyWindow(); return FALSE; }Tell me if is not clear.
In above provided sample code, i have some doubts. When i created a class CTabbedView which is inherited from CTabView, in OnCreate(), the below call it self created a tab control (horizontal splitter) without any tabs.
if (CTabView::OnCreate(lpCreateStruct) == -1)
return -1;Then what is the use of below call?
if (!m_tab.Create(CMFCTabCtrl::STYLE_3D, CRect(0, 0, 500, 100), this, 1, CMFCTabCtrl::LOCATION_BOTTOM))
{
TRACE(_T("Failed to create output tab window\n"));
return -1;
}What is the exact difference between AddTab and AddView.?
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In above provided sample code, i have some doubts. When i created a class CTabbedView which is inherited from CTabView, in OnCreate(), the below call it self created a tab control (horizontal splitter) without any tabs.
if (CTabView::OnCreate(lpCreateStruct) == -1)
return -1;Then what is the use of below call?
if (!m_tab.Create(CMFCTabCtrl::STYLE_3D, CRect(0, 0, 500, 100), this, 1, CMFCTabCtrl::LOCATION_BOTTOM))
{
TRACE(_T("Failed to create output tab window\n"));
return -1;
}What is the exact difference between AddTab and AddView.?
AddTabcall is creating the tab area: "Call this method to add a pane as a new tab on a tabbed pane" CBaseTabbedPane Class[^] andAddViewcall is creating the view which are hosted by CTabView: "Call this function to add a view to the tab control that is embedded in a frame" CTabView Class[^] -
AddTabcall is creating the tab area: "Call this method to add a pane as a new tab on a tabbed pane" CBaseTabbedPane Class[^] andAddViewcall is creating the view which are hosted by CTabView: "Call this function to add a view to the tab control that is embedded in a frame" CTabView Class[^]In my case, i need to create tabs dynamically. Lets say. When my application starts user will input a value between 1 to 10. Based on user input i need to create the tabs (no. of tabs). later in each tab in need to display different images. In this case, should i create my class which is inheriting from CTabView or CTabPane?
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In my case, i need to create tabs dynamically. Lets say. When my application starts user will input a value between 1 to 10. Based on user input i need to create the tabs (no. of tabs). later in each tab in need to display different images. In this case, should i create my class which is inheriting from CTabView or CTabPane?
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" should i create my class which is inheriting from CTabView or CTabPane?" Definitely from CTabView. And this CMyTabClass, should include at least one tab, with one view.
If i call AddView(), this itself is creating a tab. Is this not enough? No need to call AddTab() right?
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If i call AddView(), this itself is creating a tab. Is this not enough? No need to call AddTab() right?
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Dear member, in order to read easily, please format your code (use "code" button from above edit area). And, yes,
m_tab.Create(...)return TRUE, but further more, you do nothing ...If i call AddView() and run my program, it working absolutely fine with a window and a view(tab). But instead of calling AddView() initially, at runtime i based on user input, i called addview() which leads to a crash. What could be the reason.
class View : public CScrollView
{}
//below is my main class
class MyTabClass : public CTabView
{
//this function gets called automatically during creation of window.
void OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CTabView::OnCreate(lpCreateStruct) == -1)
return -1;
AddView(RUNTIME_CLASS(View),_T("Sheet1")); //this works fine.
}//this function i will call based on user input and hence its crashing during addView call. void RunTimeBasedOnUserInput() { for(int i = 0 ; i < userinput; i++) { AddView(RUNTIME\_CLASS(View),\_T("sheet %d",i)); } }}
After investigation, what i found is, During creation of window itself, OnInitUpdate function in class View is getting called each time when AddView() is called. But if i create the views dynamically, then AddView() wont call OnInitUpdate of my View class and hence the crash occurs. Exception as follows: --------------------------- Microsoft Visual C++ Runtime Library --------------------------- Debug Assertion Failed! Program: C:\Windows\SYSTEM32\mfc140d.dll File: f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\afxtabview.cpp Line: 102 For information on how your program can cause an assertion failure, see the Visual C++ documentation on asserts. (Press Retry to debug the application) --------------------------- Abort Retry Ignore --------------------------- Can you let me know how to get rid of this problem?
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Dear member, in order to read easily, please format your code (use "code" button from above edit area). And, yes,
m_tab.Create(...)return TRUE, but further more, you do nothing ...If i call AddView() and run my program, its working absolutely fine with a window and a view(tab). But instead of calling AddView() initially, at runtime based on user input, i called addview() which leads to a crash. What could be the reason.
class View : public CScrollView
{}
//below is my main class
class MyTabClass : public CTabView
{
//this function gets called automatically during creation of window.
void OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CTabView::OnCreate(lpCreateStruct) == -1)
return -1;
AddView(RUNTIME_CLASS(View),_T("Sheet1")); //this works fine.
}//this function i will call based on user input and hence its crashing during addView call. void RunTimeBasedOnUserInput() { for(int i = 0 ; i < userinput; i++) { AddView(RUNTIME\_CLASS(View),\_T("sheet %d",i)); } }}
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AddTabcall is creating the tab area: "Call this method to add a pane as a new tab on a tabbed pane" CBaseTabbedPane Class[^] andAddViewcall is creating the view which are hosted by CTabView: "Call this function to add a view to the tab control that is embedded in a frame" CTabView Class[^]If i call AddView() and run my program, its working absolutely fine with a window and a view(tab). But instead of calling AddView() initially, at runtime based on user input, i called addview() which leads to a crash. What could be the reason.
class View : public CScrollView
{}
//below is my main class
class MyTabClass : public CTabView
{
//this function gets called automatically during creation of window.
void OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CTabView::OnCreate(lpCreateStruct) == -1)
return -1;
AddView(RUNTIME_CLASS(View),_T("Sheet1")); //this works fine.
}//this function i will call based on user input and hence its crashing during addView call. void RunTimeBasedOnUserInput() { for(int i = 0 ; i < userinput; i++) { AddView(RUNTIME\_CLASS(View),\_T("sheet %d",i)); } }}
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If i call AddView() and run my program, its working absolutely fine with a window and a view(tab). But instead of calling AddView() initially, at runtime based on user input, i called addview() which leads to a crash. What could be the reason.
class View : public CScrollView
{}
//below is my main class
class MyTabClass : public CTabView
{
//this function gets called automatically during creation of window.
void OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CTabView::OnCreate(lpCreateStruct) == -1)
return -1;
AddView(RUNTIME_CLASS(View),_T("Sheet1")); //this works fine.
}//this function i will call based on user input and hence its crashing during addView call. void RunTimeBasedOnUserInput() { for(int i = 0 ; i < userinput; i++) { AddView(RUNTIME\_CLASS(View),\_T("sheet %d",i)); } }}