childfrm.cpp

MFC下对窗口属性的操作控制的例子

// ChildFrm.cpp : implementation of the CChildFrame class
//

#include "stdafx.h"
#include "WndControl.h"

#include "ChildFrm.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CChildFrame

IMPLEMENT_DYNCREATE(CChildFrame, CMDIChildWnd)

BEGIN_MESSAGE_MAP(CChildFrame, CMDIChildWnd)
	//{{AFX_MSG_MAP(CChildFrame)
	ON_WM_GETMINMAXINFO()
	ON_COMMAND(ID_WNDCONTROL_REFRAIN, OnWndcontrolRefrain)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CChildFrame construction/destruction

CChildFrame::CChildFrame()
{
	m_bRefrainChild = FALSE;
	
}

CChildFrame::~CChildFrame()
{
}

BOOL CChildFrame::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	if( !CMDIChildWnd::PreCreateWindow(cs) )
		return FALSE;

	return TRUE;
}



/////////////////////////////////////////////////////////////////////////////
// CChildFrame diagnostics

#ifdef _DEBUG
void CChildFrame::AssertValid() const
{
	CMDIChildWnd::AssertValid();
}

void CChildFrame::Dump(CDumpContext& dc) const
{
	CMDIChildWnd::Dump(dc);
}

#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CChildFrame message handlers

void CChildFrame::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI) 
{
	if (m_bRefrainChild)
	{
		lpMMI->ptMaxTrackSize.x = 300;
		lpMMI->ptMaxTrackSize.y = 200;
	}
	else
		CMDIChildWnd::OnGetMinMaxInfo(lpMMI);
}

void CChildFrame::OnWndcontrolRefrain() 
{
	if (!m_bRefrainChild)
		m_bRefrainChild = TRUE;
	else
		m_bRefrainChild = FALSE;	
}