www.pudn.com > TreePropSheetEx.rar > ResizableDialog.cpp

// ResizableDialog.cpp : implementation file 
// 
///////////////////////////////////////////////////////////////////////////// 
// 
// Copyright (C) 2000-2002 by Paolo Messina 
// (http://www.geocities.com/ppescher - ppescher@yahoo.com) 
// 
// The contents of this file are subject to the Artistic License (the "License"). 
// You may not use this file except in compliance with the License.  
// You may obtain a copy of the License at: 
// http://www.opensource.org/licenses/artistic-license.html 
// 
// If you find this code useful, credits would be nice! 
// 
///////////////////////////////////////////////////////////////////////////// 
 
#include "stdafx.h" 
#include "ResizableDialog.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CResizableDialog 
 
inline void CResizableDialog::PrivateConstruct() 
{ 
	m_bEnableSaveRestore = FALSE; 
	m_dwGripTempState = 1; 
} 
 
CResizableDialog::CResizableDialog() 
{ 
	PrivateConstruct(); 
} 
 
CResizableDialog::CResizableDialog(UINT nIDTemplate, CWnd* pParentWnd) 
	: CDialog(nIDTemplate, pParentWnd) 
{ 
	PrivateConstruct(); 
} 
 
CResizableDialog::CResizableDialog(LPCTSTR lpszTemplateName, CWnd* pParentWnd) 
	: CDialog(lpszTemplateName, pParentWnd) 
{ 
	PrivateConstruct(); 
} 
 
CResizableDialog::~CResizableDialog() 
{ 
} 
 
 
BEGIN_MESSAGE_MAP(CResizableDialog, CDialog) 
	//{{AFX_MSG_MAP(CResizableDialog) 
	ON_WM_GETMINMAXINFO() 
	ON_WM_SIZE() 
	ON_WM_DESTROY() 
	ON_WM_CREATE() 
	ON_WM_ERASEBKGND() 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
 
///////////////////////////////////////////////////////////////////////////// 
// CResizableDialog message handlers 
 
int CResizableDialog::OnCreate(LPCREATESTRUCT lpCreateStruct)  
{ 
	if (CDialog::OnCreate(lpCreateStruct) == -1) 
		return -1; 
 
	// child dialogs don't want resizable border or size grip, 
	// nor they can handle the min/max size constraints 
	BOOL bChild = GetStyle() & WS_CHILD; 
 
	if (!bChild) 
	{ 
		// keep client area 
		CRect rect; 
		GetClientRect(&rect); 
		// set resizable style 
		ModifyStyle(DS_MODALFRAME, WS_POPUP | WS_THICKFRAME); 
		// adjust size to reflect new style 
		::AdjustWindowRectEx(&rect, GetStyle(), 
			::IsMenu(GetMenu()->GetSafeHmenu()), GetExStyle()); 
		SetWindowPos(NULL, 0, 0, rect.Width(), rect.Height(), SWP_FRAMECHANGED| 
			SWP_NOMOVE|SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOREPOSITION); 
 
		// set the initial size as the min track size 
		SetMinTrackSize(rect.Size()); 
	} 
 
	// create and init the size-grip 
	if (!CreateSizeGrip(!bChild)) 
		return -1; 
 
	return 0; 
} 
 
void CResizableDialog::OnDestroy()  
{ 
	if (m_bEnableSaveRestore) 
		SaveWindowRect(m_sSection, m_bRectOnly); 
 
	// remove child windows 
	RemoveAllAnchors(); 
 
	CDialog::OnDestroy(); 
} 
 
void CResizableDialog::OnSize(UINT nType, int cx, int cy)  
{ 
	CWnd::OnSize(nType, cx, cy); 
	 
	if (nType == SIZE_MAXHIDE || nType == SIZE_MAXSHOW) 
		return;		// arrangement not needed 
 
	if (nType == SIZE_MAXIMIZED) 
		HideSizeGrip(&m_dwGripTempState); 
	else 
		ShowSizeGrip(&m_dwGripTempState); 
 
	// update grip and layout 
	UpdateSizeGrip(); 
	ArrangeLayout(); 
} 
 
void CResizableDialog::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)  
{ 
	MinMaxInfo(lpMMI); 
} 
 
// NOTE: this must be called after setting the layout 
//       to have the dialog and its controls displayed properly 
void CResizableDialog::EnableSaveRestore(LPCTSTR pszSection, BOOL bRectOnly) 
{ 
	m_sSection = pszSection; 
 
	m_bEnableSaveRestore = TRUE; 
	m_bRectOnly = bRectOnly; 
 
	// restore immediately 
	LoadWindowRect(pszSection, bRectOnly); 
} 
 
 
BOOL CResizableDialog::OnEraseBkgnd(CDC* pDC)  
{ 
	// Windows XP doesn't like clipping regions ...try this! 
	EraseBackground(pDC); 
	return TRUE; 
 
/*	ClipChildren(pDC);	// old-method (for safety) 
 
	return CDialog::OnEraseBkgnd(pDC); 
*/ 
}