Win32 SDK（对话框程序）

#include <Windows.h>
#include <tchar.h>
#include "resource.h"

TCHAR DlgName[]=TEXT("MyDialog");
TCHAR AppName[]=TEXT("Dialog");;
//TCHAR TestString[]=TEXT("hello world");

TCHAR buffer1[512];
TCHAR buffer2[512];
TCHAR *buffer3=NULL;
int a=0,b=0,c=0;
HINSTANCE g_hInstance;

INT_PTR CALLBACK WinProc(HWND hWnd,UINT Msg,WPARAM wParam,LPARAM lParam);

int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd )
{
    g_hInstance=hInstance;
    DialogBoxParam(hInstance,DlgName,NULL,(DLGPROC)WinProc,NULL);
    return 0;
}

INT_PTR CALLBACK WinProc(HWND hWnd,UINT Msg,WPARAM wParam,LPARAM lParam)
{
    switch(Msg)
    {
    case WM_INITDIALOG:
        SetFocus(GetDlgItem(hWnd,IDC_EDIT1));
        break;
    case WM_COMMAND:
        if (lParam==0)
        {
            switch(wParam)
            {
            case ID_TESTCONTROL_GETTEXT:
                GetDlgItemText(hWnd,IDC_EDIT1,buffer3,512);
                MessageBox(hWnd,buffer3,AppName,MB_OK);
                break;
            case ID_TESTCONTROL_CLEARTEXT:
                SetDlgItemText(hWnd,IDC_EDIT1,NULL);
                SetDlgItemText(hWnd,IDC_EDIT2,NULL);
                SetDlgItemText(hWnd,IDC_EDIT3,NULL);
                break;
            case ID_TESTCONTROL_EXIT:
                EndDialog(hWnd,NULL);
                break;
            }
        }
        else
        {
            if (HIWORD(wParam)==BN_CLICKED)
            {
                switch(LOWORD(wParam))
                {
                case IDOK:
                    GetDlgItemText(hWnd,IDC_EDIT1,buffer1,512);
                    GetDlgItemText(hWnd,IDC_EDIT2,buffer2,512);
                    a=_ttoi(buffer1);
                    b=_ttoi(buffer2);
                    c=a+b;
                //    buffer3=;
                    SetDlgItemText(hWnd,IDC_EDIT3,buffer3);
                    break;
                case IDCANCEL:
                    EndDialog(hWnd,NULL);
                    break;
                }

            }
        }
        break;
    default:
        return FALSE;
    }
    return TRUE;


}

***.rc:

MYDIALOG DIALOGEX 0, 0, 419, 204
STYLE DS_SETFONT | DS_MODALFRAME | DS_3DLOOK | DS_FIXEDSYS | DS_CENTER | WS_MINIMIZEBOX | WS_VISIBLE | WS_CAPTION | WS_SYSMENU
CAPTION "Dialog"
MENU IDR_MENU2
FONT 8, "MS Shell Dlg", 400, 0, 0x1
BEGIN
    DEFPUSHBUTTON   "确定",IDOK,181,10,50,14
    PUSHBUTTON      "取消",IDCANCEL,185,31,50,14
    EDITTEXT        IDC_EDIT1,27,9,50,17,ES_AUTOHSCROLL
    EDITTEXT        IDC_EDIT2,101,8,52,18,ES_AUTOHSCROLL
    EDITTEXT        IDC_EDIT3,63,35,51,17,ES_AUTOHSCROLL
    CONTROL         "",IDC_STATIC,"Static",SS_BLACKFRAME,101,71,175,110
END


/////////////////////////////////////////////////////////////////////////////
//
// Menu
//

IDR_MENU2 MENU
BEGIN
    POPUP "test control"
    BEGIN
        MENUITEM "get text",                    ID_TESTCONTROL_GETTEXT
        MENUITEM "clear text",                  ID_TESTCONTROL_CLEARTEXT
        MENUITEM "exit",                        ID_TESTCONTROL_EXIT
    END
END

***.h:

#define IDD_DIALOG1                     101
#define IDR_MENU1                       102
#define IDR_MENU2                       103
#define IDC_EDIT1                       1001
#define IDC_EDIT2                       1002
#define IDC_EDIT3                       1003
#define ID_TESTCONTROL_GETTEXT          40001
#define ID_TESTCONTROL_CLEARTEXT        40002
#define ID_TESTCONTROL_EXIT             40003

// Next default values for new objects
// 
#ifdef APSTUDIO_INVOKED
#ifndef APSTUDIO_READONLY_SYMBOLS
#define _APS_NEXT_RESOURCE_VALUE        104
#define _APS_NEXT_COMMAND_VALUE         40004
#define _APS_NEXT_CONTROL_VALUE         1004
#define _APS_NEXT_SYMED_VALUE           101
#endif
#endif