ext/ResizableLib/ResizableMDIFrame.cpp

   1 // ResizableMDIFrame.cpp : implementation file
   2 //
   3 /////////////////////////////////////////////////////////////////////////////
   4 //
   5 // This file is part of ResizableLib
   6 // http://sourceforge.net/projects/resizablelib
   7 //
   8 // Copyright (C) 2000-2004 by Paolo Messina
   9 // http://www.geocities.com/ppescher - mailto:ppescher@hotmail.com
  10 //
  11 // The contents of this file are subject to the Artistic License (the "License").
  12 // You may not use this file except in compliance with the License.
  13 // You may obtain a copy of the License at:
  14 // http://www.opensource.org/licenses/artistic-license.html
  15 //
  16 // If you find this code useful, credits would be nice!
  17 //
  18 /////////////////////////////////////////////////////////////////////////////
  19
  20 #include "stdafx.h"
  21 #include "ResizableMDIFrame.h"
  22
  23 #ifdef _DEBUG
  24 #define new DEBUG_NEW
  25 #undef THIS_FILE
  26 static char THIS_FILE[] = __FILE__;
  27 #endif
  28
  29 /////////////////////////////////////////////////////////////////////////////
  30 // CResizableMDIFrame
  31
  32 IMPLEMENT_DYNCREATE(CResizableMDIFrame, CMDIFrameWnd)
  33
  34 CResizableMDIFrame::CResizableMDIFrame()
  35 {
  36         m_bEnableSaveRestore = FALSE;
  37         m_bRectOnly = FALSE;
  38 }
  39
  40 CResizableMDIFrame::~CResizableMDIFrame()
  41 {
  42 }
  43
  44
  45 BEGIN_MESSAGE_MAP(CResizableMDIFrame, CMDIFrameWnd)
  46         //{{AFX_MSG_MAP(CResizableMDIFrame)
  47         ON_WM_GETMINMAXINFO()
  48         ON_WM_DESTROY()
  49         ON_WM_NCCREATE()
  50         ON_WM_WINDOWPOSCHANGING()
  51         //}}AFX_MSG_MAP
  52 END_MESSAGE_MAP()
  53
  54 /////////////////////////////////////////////////////////////////////////////
  55 // CResizableMDIFrame message handlers
  56
  57 void CResizableMDIFrame::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
  58 {
  59         // MDI should call default implementation
  60         CMDIFrameWnd::OnGetMinMaxInfo(lpMMI);
  61
  62         MinMaxInfo(lpMMI);
  63
  64         BOOL bMaximized = FALSE;
  65         CMDIChildWnd* pChild = MDIGetActive(&bMaximized);
  66         if (pChild != NULL && bMaximized)
  67                 ChainMinMaxInfo(lpMMI, this, pChild);
  68 }
  69
  70 // NOTE: this must be called after setting the layout
  71 //       to have the view and its controls displayed properly
  72 BOOL CResizableMDIFrame::EnableSaveRestore(LPCTSTR pszSection, BOOL bRectOnly)
  73 {
  74         m_sSection = pszSection;
  75
  76         m_bEnableSaveRestore = TRUE;
  77         m_bRectOnly = bRectOnly;
  78
  79         // restore immediately
  80         return LoadWindowRect(pszSection, bRectOnly);
  81 }
  82
  83 void CResizableMDIFrame::OnDestroy()
  84 {
  85         if (m_bEnableSaveRestore)
  86                 SaveWindowRect(m_sSection, m_bRectOnly);
  87
  88         CMDIFrameWnd::OnDestroy();
  89 }
  90
  91 BOOL CResizableMDIFrame::OnNcCreate(LPCREATESTRUCT lpCreateStruct)
  92 {
  93         if (!CMDIFrameWnd::OnNcCreate(lpCreateStruct))
  94                 return FALSE;
  95
  96         MakeResizable(lpCreateStruct);
  97
  98         return TRUE;
  99 }
 100
 101 LRESULT CResizableMDIFrame::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
 102 {
 103         if (message != WM_NCCALCSIZE || wParam == 0)
 104                 return CMDIFrameWnd::WindowProc(message, wParam, lParam);
 105
 106         // specifying valid rects needs controls already anchored
 107         LRESULT lResult = 0;
 108         HandleNcCalcSize(FALSE, (LPNCCALCSIZE_PARAMS)lParam, lResult);
 109         lResult = CMDIFrameWnd::WindowProc(message, wParam, lParam);
 110         HandleNcCalcSize(TRUE, (LPNCCALCSIZE_PARAMS)lParam, lResult);
 111         return lResult;
 112 }
 113
 114 void CResizableMDIFrame::OnWindowPosChanging(WINDOWPOS FAR* lpwndpos)
 115 {
 116         CMDIFrameWnd::OnWindowPosChanging(lpwndpos);
 117
 118         // since this window class doesn't have the style CS_HREDRAW|CS_VREDRAW
 119         // the client area is not invalidated during a resize operation and
 120         // this prevents the system from using WM_NCCALCSIZE to validate rects
 121         Invalidate();
 122 }