1、让对话框从CdialogResize类继承过来：

class CMainDlg : public CDialogImpl,

public CDoubleBufferImpl,

public CDialogResize

2、添加消息路由

BEGIN_MSG_MAP(CMainDlg)

CHAIN_MSG_MAP(CDialogResize)

CHAIN_MSG_MAP(CDoubleBufferImpl)

MESSAGE_HANDLER(WM_INITDIALOG, OnInitDialog)

COMMAND_ID_HANDLER(IDCANCEL, OnCancel)

END_MSG_MAP()

3、添加消息映射

BEGIN_DLGRESIZE_MAP(CMainDlg)

DLGRESIZE_CONTROL(IDC_STATIC_INPUT,  DLSZ_SIZE_X)

DLGRESIZE_CONTROL(IDC_STATIC_SEARCH, DLSZ_SIZE_X | DLSZ_SIZE_Y)

END_DLGRESIZE_MAP()

4、在OnInitDialog()中调用DlgResize_Init();

当对话框存在GroupBox的话，需要将GroupBox设置为透明背影

Transparent:true

测试代码：

MainDlg.h

// MainDlg.h : interface of the CMainDlg class
//
/////////////////////////////////////////////////////////////////////////////

#pragma once
#include

class CMainDlg : public CDialogImpl,
public CDoubleBufferImpl,
public CDialogResize
{
public:
enum { IDD = IDD_MAINDLG };

BEGIN\_MSG\_MAP(CMainDlg)  
    CHAIN\_MSG\_MAP(CDialogResize<CMainDlg>)  
    CHAIN\_MSG\_MAP(CDoubleBufferImpl<CMainDlg>)  
    MESSAGE\_HANDLER(WM\_INITDIALOG, OnInitDialog)  
    COMMAND\_ID\_HANDLER(IDCANCEL, OnCancel)  
END\_MSG\_MAP()

BEGIN\_DLGRESIZE\_MAP(CMainDlg)  
    DLGRESIZE\_CONTROL(IDC\_STATIC\_INPUT,  DLSZ\_SIZE\_X)  
    DLGRESIZE\_CONTROL(IDC\_STATIC\_SEARCH, DLSZ\_SIZE\_X | DLSZ\_SIZE\_Y)  
END\_DLGRESIZE\_MAP()

// Handler prototypes (uncomment arguments if needed):
// LRESULT MessageHandler(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
// LRESULT CommandHandler(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
// LRESULT NotifyHandler(int /*idCtrl*/, LPNMHDR /*pnmh*/, BOOL& /*bHandled*/)

LRESULT OnInitDialog(UINT /\*uMsg\*/, WPARAM /\*wParam\*/, LPARAM /\*lParam\*/, BOOL& /\*bHandled\*/);  
LRESULT OnCancel(WORD /\*wNotifyCode\*/, WORD wID, HWND /\*hWndCtl\*/, BOOL& /\*bHandled\*/);  
void DoPaint(CDCHandle dc);  

private:
Gdiplus::GdiplusStartupInput gGdiInput;
ULONG token;
};

MainDlg.cpp

// MainDlg.cpp : implementation of the CMainDlg class
//
/////////////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "resource.h"

#include "MainDlg.h"
#pragma comment(lib, "GdiPlus.lib")

LRESULT CMainDlg::OnInitDialog(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
// center the dialog on the screen
CenterWindow();

// set icons  
HICON hIcon = AtlLoadIconImage(IDR\_MAINFRAME, LR\_DEFAULTCOLOR, ::GetSystemMetrics(SM\_CXICON), ::GetSystemMetrics(SM\_CYICON));  
SetIcon(hIcon, TRUE);  
HICON hIconSmall = AtlLoadIconImage(IDR\_MAINFRAME, LR\_DEFAULTCOLOR, ::GetSystemMetrics(SM\_CXSMICON), ::GetSystemMetrics(SM\_CYSMICON));  
SetIcon(hIconSmall, FALSE);

GdiplusStartup(&token, &gGdiInput, NULL);

DlgResize\_Init();  
return TRUE;  

}

void CMainDlg::DoPaint(CDCHandle dc)
{
RECT rect;
GetClientRect(&rect);

Gdiplus::Graphics g(dc);  
Gdiplus::Image im(\_T("res/green.jpg"));  
g.DrawImage(&im, 0, 0, rect.right - rect.left, rect.bottom - rect.top);  

}

LRESULT CMainDlg::OnCancel(WORD /*wNotifyCode*/, WORD wID, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
Gdiplus::GdiplusShutdown(token);
EndDialog(wID);
return 0;
}