WTL改变对话框大小

1、让对话框从CdialogResize类继承过来：

class CMainDlg : public CDialogImpl<CMainDlg>,

public CDoubleBufferImpl<CMainDlg>,

public CDialogResize<CMainDlg>

2、添加消息路由

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()

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 <gdiplus.h>

class CMainDlg : public CDialogImpl<CMainDlg>,

	public CDoubleBufferImpl<CMainDlg>,

	public CDialogResize<CMainDlg>

{

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;

}

巴特西

WTL改变对话框大小

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