sneedmc/mmc_updater/depends/win32cpp/mdi.h

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// Released: 5th AUgust 2011
//
// David Nash
// email: dnash@bigpond.net.au
// url: https://sourceforge.net/projects/win32-framework
//
//
// Copyright (c) 2005-2011 David Nash
//
// Permission is hereby granted, free of charge, to
// any person obtaining a copy of this software and
// associated documentation files (the "Software"),
// to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify,
// merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom
// the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice
// shall be included in all copies or substantial portions
// of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
// OR OTHER DEALINGS IN THE SOFTWARE.
//
////////////////////////////////////////////////////////
////////////////////////////////////////////////////////
// mdi.h
// Declaration of the CMDIChild and CMDIFrame classes
// The classes defined here add MDI frames support to Win32++. MDI
// (Multiple Document Interface) frames host one or more child windows. The
// child windows hosted by a MDI frame can be different types. For example,
// some MDI child windows could be used to edit text, while others could be
// used to display a bitmap. Four classes are defined here to support MDI
// frames:
// 1) CMDIFrame. This class inherits from CFrame, and adds the functionality
// required by MDI frames. It keeps track of the MDI children created and
// destroyed, and adjusts the menu when a MDI child is activated. Use the
// AddMDIChild function to add MDI child windows to the MDI frame. Inherit
// from CMDIFrame to create your own MDI frame.
//
// 2) CMDIChild: All MDI child windows (ie. CWnd classes) should inherit from
// this class. Each MDI child type can have a different frame menu.
// Use the MDIFrame generic application as the starting point for your own MDI
// frame applications.
// Refer to the MDIDemo sample for an example on how to use these classes to
// create a MDI frame application with different types of MDI child windows.
#ifndef _WIN32XX_MDI_H_
#define _WIN32XX_MDI_H_
#include "frame.h"
#include <vector>
namespace Win32xx
{
class CMDIChild;
class CMDIFrame;
typedef Shared_Ptr<CMDIChild> MDIChildPtr;
/////////////////////////////////////
// Declaration of the CMDIChild class
//
class CMDIChild : public CWnd
{
friend class CMDIFrame;
public:
CMDIChild();
virtual ~CMDIChild();
// These are the functions you might wish to override
virtual HWND Create(CWnd* pParent = NULL);
virtual void RecalcLayout();
// These functions aren't virtual, and shouldn't be overridden
void SetHandles(HMENU MenuName, HACCEL AccelName);
CMDIFrame* GetMDIFrame() const;
CWnd* GetView() const {return m_pView;}
void SetView(CWnd& pwndView);
void MDIActivate() const;
void MDIDestroy() const;
void MDIMaximize() const;
void MDIRestore() const;
protected:
// Its unlikely you would need to override these functions
virtual LRESULT FinalWindowProc(UINT uMsg, WPARAM wParam, LPARAM lParam);
virtual void OnCreate();
virtual LRESULT WndProcDefault(UINT uMsg, WPARAM wParam, LPARAM lParam);
private:
CMDIChild(const CMDIChild&); // Disable copy construction
CMDIChild& operator = (const CMDIChild&); // Disable assignment operator
CWnd* m_pView; // pointer to the View CWnd object
HMENU m_hChildMenu;
HACCEL m_hChildAccel;
};
/////////////////////////////////////
// Declaration of the CMDIFrame class
//
class CMDIFrame : public CFrame
{
friend class CMDIChild; // CMDIChild uses m_hOrigMenu
typedef Shared_Ptr<CMDIChild> MDIChildPtr;
public:
class CMDIClient : public CWnd // a nested class within CMDIFrame
{
public:
CMDIClient() {}
virtual ~CMDIClient() {}
virtual HWND Create(CWnd* pParent = NULL);
virtual LRESULT WndProc(UINT uMsg, WPARAM wParam, LPARAM lParam);
CMDIFrame* GetMDIFrame() const { return (CMDIFrame*)GetParent(); }
private:
CMDIClient(const CMDIClient&); // Disable copy construction
CMDIClient& operator = (const CMDIClient&); // Disable assignment operator
};
CMDIFrame();
virtual ~CMDIFrame() {}
virtual CMDIChild* AddMDIChild(MDIChildPtr pMDIChild);
virtual CMDIClient& GetMDIClient() const { return (CMDIClient&)m_MDIClient; }
virtual BOOL IsMDIFrame() const { return TRUE; }
virtual void RemoveMDIChild(HWND hWnd);
virtual BOOL RemoveAllMDIChildren();
virtual void UpdateCheckMarks();
// These functions aren't virtual, so don't override them
std::vector <MDIChildPtr>& GetAllMDIChildren() {return m_vMDIChild;}
CMDIChild* GetActiveMDIChild() const;
BOOL IsMDIChildMaxed() const;
void MDICascade(int nType = 0) const;
void MDIIconArrange() const;
void MDIMaximize() const;
void MDINext() const;
void MDIPrev() const;
void MDIRestore() const;
void MDITile(int nType = 0) const;
void SetActiveMDIChild(CMDIChild* pChild);
protected:
// These are the functions you might wish to override
virtual void OnClose();
virtual void OnViewStatusBar();
virtual void OnViewToolBar();
virtual void OnWindowPosChanged();
virtual void RecalcLayout();
virtual BOOL PreTranslateMessage(MSG* pMsg);
virtual LRESULT WndProcDefault(UINT uMsg, WPARAM wParam, LPARAM lParam);
private:
CMDIFrame(const CMDIFrame&); // Disable copy construction
CMDIFrame& operator = (const CMDIFrame&); // Disable assignment operator
void AppendMDIMenu(HMENU hMenuWindow);
LRESULT FinalWindowProc(UINT uMsg, WPARAM wParam, LPARAM lParam);
void UpdateFrameMenu(HMENU hMenu);
CMDIClient m_MDIClient;
std::vector <MDIChildPtr> m_vMDIChild;
HWND m_hActiveMDIChild;
};
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
namespace Win32xx
{
/////////////////////////////////////
// Definitions for the CMDIFrame class
//
inline CMDIFrame::CMDIFrame() : m_hActiveMDIChild(NULL)
{
SetView(GetMDIClient());
}
inline CMDIChild* CMDIFrame::AddMDIChild(MDIChildPtr pMDIChild)
{
assert(NULL != pMDIChild.get()); // Cannot add Null MDI Child
m_vMDIChild.push_back(pMDIChild);
pMDIChild->Create(GetView());
return pMDIChild.get();
}
inline void CMDIFrame::AppendMDIMenu(HMENU hMenuWindow)
{
// Adds the additional menu items the the "Window" submenu when
// MDI child windows are created
if (!IsMenu(hMenuWindow))
return;
// Delete previously appended items
int nItems = ::GetMenuItemCount(hMenuWindow);
UINT uLastID = ::GetMenuItemID(hMenuWindow, --nItems);
if ((uLastID >= IDW_FIRSTCHILD) && (uLastID < IDW_FIRSTCHILD + 10))
{
while ((uLastID >= IDW_FIRSTCHILD) && (uLastID < IDW_FIRSTCHILD + 10))
{
::DeleteMenu(hMenuWindow, nItems, MF_BYPOSITION);
uLastID = ::GetMenuItemID(hMenuWindow, --nItems);
}
//delete the separator too
::DeleteMenu(hMenuWindow, nItems, MF_BYPOSITION);
}
int nWindow = 0;
// Allocate an iterator for our MDIChild vector
std::vector <MDIChildPtr>::iterator v;
for (v = GetAllMDIChildren().begin(); v < GetAllMDIChildren().end(); ++v)
{
if ((*v)->GetWindowLongPtr(GWL_STYLE) & WS_VISIBLE) // IsWindowVisible is unreliable here
{
// Add Separator
if (0 == nWindow)
::AppendMenu(hMenuWindow, MF_SEPARATOR, 0, NULL);
// Add a menu entry for each MDI child (up to 9)
if (nWindow < 9)
{
tString tsMenuItem ( (*v)->GetWindowText() );
if (tsMenuItem.length() > MAX_MENU_STRING -10)
{
// Truncate the string if its too long
tsMenuItem.erase(tsMenuItem.length() - MAX_MENU_STRING +10);
tsMenuItem += _T(" ...");
}
TCHAR szMenuString[MAX_MENU_STRING+1];
wsprintf(szMenuString, _T("&%d %s"), nWindow+1, tsMenuItem.c_str());
::AppendMenu(hMenuWindow, MF_STRING, IDW_FIRSTCHILD + nWindow, szMenuString);
if (GetActiveMDIChild() == (*v).get())
::CheckMenuItem(hMenuWindow, IDW_FIRSTCHILD+nWindow, MF_CHECKED);
++nWindow;
}
else if (9 == nWindow)
// For the 10th MDI child, add this menu item and return
{
::AppendMenu(hMenuWindow, MF_STRING, IDW_FIRSTCHILD + nWindow, _T("&Windows..."));
return;
}
}
}
}
inline LRESULT CMDIFrame::FinalWindowProc(UINT uMsg, WPARAM wParam, LPARAM lParam)
{
return ::DefFrameProc(m_hWnd, GetMDIClient(), uMsg, wParam, lParam);
}
inline CMDIChild* CMDIFrame::GetActiveMDIChild() const
{
return (CMDIChild*)FromHandle(m_hActiveMDIChild);
}
inline BOOL CMDIFrame::IsMDIChildMaxed() const
{
BOOL bMaxed = FALSE;
GetMDIClient().SendMessage(WM_MDIGETACTIVE, 0L, (LPARAM)&bMaxed);
return bMaxed;
}
inline void CMDIFrame::MDICascade(int nType /* = 0*/) const
{
// Possible values for nType are:
// MDITILE_SKIPDISABLED Prevents disabled MDI child windows from being cascaded.
assert(::IsWindow(m_hWnd));
GetView()->SendMessage(WM_MDICASCADE, (WPARAM)nType, 0L);
}
inline void CMDIFrame::MDIIconArrange() const
{
assert(::IsWindow(m_hWnd));
GetView()->SendMessage(WM_MDIICONARRANGE, 0L, 0L);
}
inline void CMDIFrame::MDIMaximize() const
{
assert(::IsWindow(m_hWnd));
GetView()->SendMessage(WM_MDIMAXIMIZE, 0L, 0L);
}
inline void CMDIFrame::MDINext() const
{
assert(::IsWindow(m_hWnd));
HWND hMDIChild = GetActiveMDIChild()->GetHwnd();
GetView()->SendMessage(WM_MDINEXT, (WPARAM)hMDIChild, FALSE);
}
inline void CMDIFrame::MDIPrev() const
{
assert(::IsWindow(m_hWnd));
HWND hMDIChild = GetActiveMDIChild()->GetHwnd();
GetView()->SendMessage(WM_MDINEXT, (WPARAM)hMDIChild, TRUE);
}
inline void CMDIFrame::MDIRestore() const
{
assert(::IsWindow(m_hWnd));
GetView()->SendMessage(WM_MDIRESTORE, 0L, 0L);
}
inline void CMDIFrame::MDITile(int nType /* = 0*/) const
{
// Possible values for nType are:
// MDITILE_HORIZONTAL Tiles MDI child windows so that one window appears above another.
// MDITILE_SKIPDISABLED Prevents disabled MDI child windows from being tiled.
// MDITILE_VERTICAL Tiles MDI child windows so that one window appears beside another.
assert(::IsWindow(m_hWnd));
GetView()->SendMessage(WM_MDITILE, (WPARAM)nType, 0L);
}
inline void CMDIFrame::OnClose()
{
if (RemoveAllMDIChildren())
{
CFrame::OnClose();
Destroy();
}
}
inline void CMDIFrame::OnViewStatusBar()
{
CFrame::OnViewStatusBar();
UpdateCheckMarks();
GetView()->RedrawWindow(NULL, NULL, RDW_FRAME | RDW_INVALIDATE | RDW_ERASE | RDW_ALLCHILDREN);
}
inline void CMDIFrame::OnViewToolBar()
{
CFrame::OnViewToolBar();
UpdateCheckMarks();
GetView()->RedrawWindow(NULL, NULL, RDW_FRAME | RDW_INVALIDATE | RDW_ERASE | RDW_ALLCHILDREN);
}
inline void CMDIFrame::OnWindowPosChanged()
{
if (IsMenuBarUsed())
{
// Refresh MenuBar Window
HMENU hMenu= GetMenuBar().GetMenu();
GetMenuBar().SetMenu(hMenu);
UpdateCheckMarks();
}
}
inline BOOL CMDIFrame::PreTranslateMessage(MSG* pMsg)
{
if (WM_KEYFIRST <= pMsg->message && pMsg->message <= WM_KEYLAST)
{
if (TranslateMDISysAccel(GetView()->GetHwnd(), pMsg))
return TRUE;
}
return CFrame::PreTranslateMessage(pMsg);
}
inline void CMDIFrame::RecalcLayout()
{
CFrame::RecalcLayout();
if (GetView()->IsWindow())
MDIIconArrange();
}
inline BOOL CMDIFrame::RemoveAllMDIChildren()
{
BOOL bResult = TRUE;
int Children = (int)m_vMDIChild.size();
// Remove the children in reverse order
for (int i = Children-1; i >= 0; --i)
{
if (IDNO == m_vMDIChild[i]->SendMessage(WM_CLOSE, 0L, 0L)) // Also removes the MDI child
bResult = FALSE;
}
return bResult;
}
inline void CMDIFrame::RemoveMDIChild(HWND hWnd)
{
// Allocate an iterator for our HWND map
std::vector <MDIChildPtr>::iterator v;
for (v = m_vMDIChild.begin(); v!= m_vMDIChild.end(); ++v)
{
if ((*v)->GetHwnd() == hWnd)
{
m_vMDIChild.erase(v);
break;
}
}
if (GetActiveMDIChild())
{
if (GetActiveMDIChild()->m_hChildMenu)
UpdateFrameMenu(GetActiveMDIChild()->m_hChildMenu);
if (GetActiveMDIChild()->m_hChildAccel)
GetApp()->SetAccelerators(GetActiveMDIChild()->m_hChildAccel, this);
}
else
{
if (IsMenuBarUsed())
GetMenuBar().SetMenu(GetFrameMenu());
else
SetMenu(FromHandle(GetFrameMenu()));
GetApp()->SetAccelerators(GetFrameAccel(), this);
}
}
inline void CMDIFrame::SetActiveMDIChild(CMDIChild* pChild)
{
assert ( pChild->IsWindow() );
GetMDIClient().SendMessage(WM_MDIACTIVATE, (WPARAM)pChild->GetHwnd(), 0L);
// Verify
assert ( m_hActiveMDIChild == pChild->GetHwnd() );
}
inline void CMDIFrame::UpdateCheckMarks()
{
if ((GetActiveMDIChild()) && GetActiveMDIChild()->m_hChildMenu)
{
HMENU hMenu = GetActiveMDIChild()->m_hChildMenu;
UINT uCheck = GetToolBar().IsWindowVisible()? MF_CHECKED : MF_UNCHECKED;
::CheckMenuItem(hMenu, IDW_VIEW_TOOLBAR, uCheck);
uCheck = GetStatusBar().IsWindowVisible()? MF_CHECKED : MF_UNCHECKED;
::CheckMenuItem (hMenu, IDW_VIEW_STATUSBAR, uCheck);
}
}
inline void CMDIFrame::UpdateFrameMenu(HMENU hMenu)
{
int nMenuItems = GetMenuItemCount(hMenu);
if (nMenuItems > 0)
{
// The Window menu is typically second from the right
int nWindowItem = MAX (nMenuItems -2, 0);
HMENU hMenuWindow = ::GetSubMenu (hMenu, nWindowItem);
if (hMenuWindow)
{
if (IsMenuBarUsed())
{
AppendMDIMenu(hMenuWindow);
GetMenuBar().SetMenu(hMenu);
}
else
{
GetView()->SendMessage (WM_MDISETMENU, (WPARAM) hMenu, (LPARAM)hMenuWindow);
DrawMenuBar();
}
}
}
UpdateCheckMarks();
}
inline LRESULT CMDIFrame::WndProcDefault(UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_CLOSE:
OnClose();
return 0;
case WM_WINDOWPOSCHANGED:
// MDI Child or MDI frame has been resized
OnWindowPosChanged();
break; // Continue with default processing
} // switch uMsg
return CFrame::WndProcDefault(uMsg, wParam, lParam);
}
inline HWND CMDIFrame::CMDIClient::Create(CWnd* pParent)
{
assert(pParent != 0);
CLIENTCREATESTRUCT clientcreate ;
clientcreate.hWindowMenu = m_hWnd;
clientcreate.idFirstChild = IDW_FIRSTCHILD ;
DWORD dwStyle = WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | MDIS_ALLCHILDSTYLES;
// Create the view window
CreateEx(WS_EX_CLIENTEDGE, _T("MDICLient"), TEXT(""), dwStyle, 0, 0, 0, 0, pParent, NULL, (PSTR) &clientcreate);
return m_hWnd;
}
inline LRESULT CMDIFrame::CMDIClient::WndProc(UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_MDIDESTROY:
{
// Do default processing first
CallWindowProc(GetPrevWindowProc(), uMsg, wParam, lParam);
// Now remove MDI child
GetMDIFrame()->RemoveMDIChild((HWND) wParam);
}
return 0; // Discard message
case WM_MDISETMENU:
{
if (GetMDIFrame()->IsMenuBarUsed())
{
return 0L;
}
}
break;
case WM_MDIACTIVATE:
{
// Suppress redraw to avoid flicker when activating maximised MDI children
SendMessage(WM_SETREDRAW, FALSE, 0L);
LRESULT lr = CallWindowProc(GetPrevWindowProc(), WM_MDIACTIVATE, wParam, lParam);
SendMessage(WM_SETREDRAW, TRUE, 0L);
RedrawWindow(0, 0, RDW_FRAME | RDW_INVALIDATE | RDW_ALLCHILDREN);
return lr;
}
}
return CWnd::WndProcDefault(uMsg, wParam, lParam);
}
/////////////////////////////////////
//Definitions for the CMDIChild class
//
inline CMDIChild::CMDIChild() : m_pView(NULL), m_hChildMenu(NULL)
{
// Set the MDI Child's menu and accelerator in the constructor, like this ...
// HMENU hChildMenu = LoadMenu(GetApp()->GetResourceHandle(), _T("MdiMenuView"));
// HACCEL hChildAccel = LoadAccelerators(GetApp()->GetResourceHandle(), _T("MDIAccelView"));
// SetHandles(hChildMenu, hChildAccel);
}
inline CMDIChild::~CMDIChild()
{
if (IsWindow())
GetParent()->SendMessage(WM_MDIDESTROY, (WPARAM)m_hWnd, 0L);
if (m_hChildMenu)
::DestroyMenu(m_hChildMenu);
}
inline HWND CMDIChild::Create(CWnd* pParent /*= NULL*/)
// We create the MDI child window and then maximize if required.
// This technique avoids unnecessary flicker when creating maximized MDI children.
{
//Call PreCreate in case its overloaded
PreCreate(*m_pcs);
//Determine if the window should be created maximized
BOOL bMax = FALSE;
pParent->SendMessage(WM_MDIGETACTIVE, 0L, (LPARAM)&bMax);
bMax = bMax | (m_pcs->style & WS_MAXIMIZE);
// Set the Window Class Name
TCHAR szClassName[MAX_STRING_SIZE + 1] = _T("Win32++ MDI Child");
if (m_pcs->lpszClass)
lstrcpyn(szClassName, m_pcs->lpszClass, MAX_STRING_SIZE);
// Set the window style
DWORD dwStyle;
dwStyle = m_pcs->style & ~WS_MAXIMIZE;
dwStyle |= WS_VISIBLE | WS_OVERLAPPEDWINDOW ;
// Set window size and position
int x = CW_USEDEFAULT;
int y = CW_USEDEFAULT;
int cx = CW_USEDEFAULT;
int cy = CW_USEDEFAULT;
if(m_pcs->cx && m_pcs->cy)
{
x = m_pcs->x;
y = m_pcs->y;
cx = m_pcs->cx;
cy = m_pcs->cy;
}
// Set the extended style
DWORD dwExStyle = m_pcs->dwExStyle | WS_EX_MDICHILD;
// Turn off redraw while creating the window
pParent->SendMessage(WM_SETREDRAW, FALSE, 0L);
// Create the window
if (!CreateEx(dwExStyle, szClassName, m_pcs->lpszName, dwStyle, x, y,
cx, cy, pParent, FromHandle(m_pcs->hMenu), m_pcs->lpCreateParams))
throw CWinException(_T("CMDIChild::Create ... CreateEx failed"));
if (bMax)
ShowWindow(SW_MAXIMIZE);
// Turn redraw back on
pParent->SendMessage(WM_SETREDRAW, TRUE, 0L);
pParent->RedrawWindow(NULL, NULL, RDW_INVALIDATE | RDW_ALLCHILDREN);
// Ensure bits revealed by round corners (XP themes) are redrawn
SetWindowPos(NULL, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_FRAMECHANGED);
if (m_hChildMenu)
GetMDIFrame()->UpdateFrameMenu(m_hChildMenu);
if (m_hChildAccel)
GetApp()->SetAccelerators(m_hChildAccel, this);
return m_hWnd;
}
inline CMDIFrame* CMDIChild::GetMDIFrame() const
{
CMDIFrame* pMDIFrame = (CMDIFrame*)GetParent()->GetParent();
assert(dynamic_cast<CMDIFrame*>(pMDIFrame));
return pMDIFrame;
}
inline LRESULT CMDIChild::FinalWindowProc(UINT uMsg, WPARAM wParam, LPARAM lParam)
{
return ::DefMDIChildProc(m_hWnd, uMsg, wParam, lParam);
}
inline void CMDIChild::MDIActivate() const
{
GetParent()->SendMessage(WM_MDIACTIVATE, (WPARAM)m_hWnd, 0L);
}
inline void CMDIChild::MDIDestroy() const
{
GetParent()->SendMessage(WM_MDIDESTROY, (WPARAM)m_hWnd, 0L);
}
inline void CMDIChild::MDIMaximize() const
{
GetParent()->SendMessage(WM_MDIMAXIMIZE, (WPARAM)m_hWnd, 0L);
}
inline void CMDIChild::MDIRestore() const
{
GetParent()->SendMessage(WM_MDIRESTORE, (WPARAM)m_hWnd, 0L);
}
inline void CMDIChild::OnCreate()
{
// Create the view window
assert(GetView()); // Use SetView in CMDIChild's constructor to set the view window
GetView()->Create(this);
RecalcLayout();
}
inline void CMDIChild::RecalcLayout()
{
// Resize the View window
CRect rc = GetClientRect();
m_pView->SetWindowPos( NULL, rc.left, rc.top, rc.Width(), rc.Height(), SWP_SHOWWINDOW );
}
inline void CMDIChild::SetHandles(HMENU hMenu, HACCEL hAccel)
{
m_hChildMenu = hMenu;
m_hChildAccel = hAccel;
// Note: It is valid to call SetChildMenu before the window is created
if (IsWindow())
{
CWnd* pWnd = GetMDIFrame()->GetActiveMDIChild();
if (pWnd == this)
{
if (m_hChildMenu)
GetMDIFrame()->UpdateFrameMenu(m_hChildMenu);
if (m_hChildAccel)
GetApp()->SetAccelerators(m_hChildAccel, GetMDIFrame());
}
}
}
inline void CMDIChild::SetView(CWnd& wndView)
// Sets or changes the View window displayed within the frame
{
if (m_pView != &wndView)
{
// Destroy the existing view window (if any)
if (m_pView) m_pView->Destroy();
// Assign the view window
m_pView = &wndView;
if (m_hWnd)
{
// The frame is already created, so create and position the new view too
assert(GetView()); // Use SetView in CMDIChild's constructor to set the view window
GetView()->Create(this);
RecalcLayout();
}
}
}
inline LRESULT CMDIChild::WndProcDefault(UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_MDIACTIVATE:
{
// This child is being activated
if (lParam == (LPARAM) m_hWnd)
{
GetMDIFrame()->m_hActiveMDIChild = m_hWnd;
// Set the menu to child default menu
if (m_hChildMenu)
GetMDIFrame()->UpdateFrameMenu(m_hChildMenu);
if (m_hChildAccel)
GetApp()->SetAccelerators(m_hChildAccel, this);
}
// No child is being activated
if (0 == lParam)
{
GetMDIFrame()->m_hActiveMDIChild = NULL;
// Set the menu to frame's original menu
GetMDIFrame()->UpdateFrameMenu(GetMDIFrame()->GetFrameMenu());
GetApp()->SetAccelerators(GetMDIFrame()->GetFrameAccel(), this);
}
}
return 0L ;
case WM_WINDOWPOSCHANGED:
{
RecalcLayout();
break;
}
}
return CWnd::WndProcDefault(uMsg, wParam, lParam);
}
} // namespace Win32xx
#endif // _WIN32XX_MDI_H_