组合框控件

开发平台：
Visual C++

ComboBoxDemo.cpp：源码内容
							// ComboBoxDemo.cpp : Defines the entry point for the application.
//
#include "stdafx.h"
#include "ComboBoxDemo.h"
#define MAX_LOADSTRING 100
// Global Variables:
HINSTANCE hInst;								// current instance
TCHAR szTitle[MAX_LOADSTRING];					// The title bar text
TCHAR szWindowClass[MAX_LOADSTRING];			// the main window class name
// Forward declarations of functions included in this code module:
ATOM				MyRegisterClass(HINSTANCE hInstance);
BOOL				InitInstance(HINSTANCE, int);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK	About(HWND, UINT, WPARAM, LPARAM);
int APIENTRY _tWinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPTSTR    lpCmdLine,
                     int       nCmdShow)
{
 	// TODO: Place code here.
	MSG msg;
	HACCEL hAccelTable;
	// Initialize global strings
	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	LoadString(hInstance, IDC_COMBOBOXDEMO, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance);
	// Perform application initialization:
	if (!InitInstance (hInstance, nCmdShow)) 
	{
		return FALSE;
	}
	hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_COMBOBOXDEMO);
	// Main message loop:
	while (GetMessage(&msg, NULL, 0, 0)) 
	{
		if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) 
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}
	return (int) msg.wParam;
}
//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
//  COMMENTS:
//
//    This function and its usage are only necessary if you want this code
//    to be compatible with Win32 systems prior to the 'RegisterClassEx'
//    function that was added to Windows 95. It is important to call this function
//    so that the application will get 'well formed' small icons associated
//    with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;
	wcex.cbSize = sizeof(WNDCLASSEX); 
	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= (WNDPROC)WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= LoadIcon(hInstance, (LPCTSTR)IDI_COMBOBOXDEMO);
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName	= (LPCTSTR)IDC_COMBOBOXDEMO;
	wcex.lpszClassName	= szWindowClass;
	wcex.hIconSm		= LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL);
	return RegisterClassEx(&wcex);
}
HWND hComboBox;
HWND hEditBox;
HWND hEditBoxItem;
//
//   FUNCTION: InitInstance(HANDLE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;
   hInst = hInstance; // Store instance handle in our global variable
   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);
   if (!hWnd)
   {
      return FALSE;
   }
   //Tao Combox Box 
   hComboBox= CreateWindow(_T("COMBOBOX"),_T(""),WS_CHILD|WS_VISIBLE|CBS_DROPDOWNLIST|CBS_AUTOHSCROLL|CBS_UPPERCASE|CBS_SORT,50,250,100,200,hWnd,(HMENU)10001,hInst,NULL);
   hEditBox= CreateWindow(_T("EDIT"),_T(""),WS_CHILD|WS_VISIBLE|ES_MULTILINE|WS_BORDER|WS_HSCROLL|WS_VSCROLL,50,50,100,200,hWnd,(HMENU)10002,hInst,NULL);	
   hEditBoxItem= CreateWindow(_T("EDIT"),_T(""),WS_CHILD|WS_VISIBLE|ES_MULTILINE|WS_BORDER,250,50,200,100,hWnd,(HMENU)10003,hInst,NULL);	
   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);
   return TRUE;
}
//
//  FUNCTION: WndProc(HWND, unsigned, WORD, LONG)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND	- process the application menu
//  WM_PAINT	- Paint the main window
//  WM_DESTROY	- post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	int wmId, wmEvent;
	PAINTSTRUCT ps;
	HDC hdc;
	switch (message) 
	{
	case WM_COMMAND:
		wmId    = LOWORD(wParam); 
		wmEvent = HIWORD(wParam); 
		// Parse the menu selections:
		switch (wmId)
		{		
		case IDM_ABOUT:
			DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);
			break;
		case IDM_EXIT:
			DestroyWindow(hWnd);
			break;
		case 10001:
			{
				switch (wmEvent)
				{
					case CBN_CLOSEUP:
					{
						TCHAR buf[1000];
						GetWindowText(hEditBox,buf,1000);
						_tcscat(buf,_T("rnclose up"));
						SetWindowText(hEditBox,buf);
						break;
					}
					case CBN_DROPDOWN:
						{
							TCHAR buf[1000];
							GetWindowText(hEditBox,buf,1000);
							_tcscat(buf,_T("rndropdown"));
							SetWindowText(hEditBox,buf);
							break;
						}
					case CBN_EDITCHANGE:
						{
							TCHAR buf[1000];
							GetWindowText(hEditBox,buf,1000);
							_tcscat(buf,_T("rneditchange"));
							SetWindowText(hEditBox,buf);
							break;
						}
					case CBN_SELCHANGE:
						{
							TCHAR buf[1000];
							GetWindowText(hEditBox,buf,1000);
							_tcscat(buf,_T("rnCBN_SELCHANGE"));
							SetWindowText(hEditBox,buf);
							break;
						}
					case CBN_SELENDOK:
						{
							TCHAR buf[1000];
							GetWindowText(hEditBox,buf,1000);
							_tcscat(buf,_T("rnCBN_SELENDOK"));
							SetWindowText(hEditBox,buf);
							break;
						}
					case CBN_SETFOCUS:
						{
							TCHAR buf[1000];
							GetWindowText(hEditBox,buf,1000);
							_tcscat(buf,_T("rnCBN_SETFOCUS"));
							SetWindowText(hEditBox,buf);
							break;
						}
					case CBN_KILLFOCUS :
						{
							TCHAR buf[1000];
							GetWindowText(hEditBox,buf,1000);
							_tcscat(buf,_T("rnCBN_KILLFOCUS"));
							SetWindowText(hEditBox,buf);
							break;
						}
					
				}
				break;
			}
		case ID_DEMO1_ADDSTRING:
			{
				TCHAR buf [1000];
				GetWindowText(hEditBoxItem,buf,1000);
				SendMessage(hComboBox,CB_ADDSTRING,0,(LPARAM)buf);		
				break;
			}
		case ID_DEMO1_INSERTSTRING:
			{
				TCHAR buf [1000];
				GetWindowText(hEditBoxItem,buf,1000);
				SendMessage(hComboBox,CB_INSERTSTRING,1,(LPARAM)buf);		
				break;
			}
		case ID_DEMO1_DELETESTRING:
			{
					TCHAR buf [1000];
				GetWindowText(hEditBoxItem,buf,1000);
				int i = SendMessage(hComboBox,CB_FINDSTRINGEXACT,0,(LPARAM)buf);
				SendMessage(hComboBox,CB_DELETESTRING,(WPARAM)i,0);	
				break;
			}
		case ID_DEMO2_CB_FINDSTRING:
			{
				int vt=SendMessage(hComboBox,CB_FINDSTRING, 0,(LPARAM) _T("A"));
				break;
			}
		case ID_DEMO2_CB_FINDSTRINGEXACT:
			{
				int vt=SendMessage(hComboBox,CB_FINDSTRINGEXACT, 0,(LPARAM) _T("A"));
				break;
			}
		case ID_DEMO2_CB_SELECTSTRING:
			{
				break;
			}
		case ID_DEMO3_CB_GETCURSEL:
			{
				int curIndex=SendMessage(hComboBox,CB_GETCURSEL,0,0);
				break;
			}
		case ID_DEMO3_CB_SETCURSEL:
			{
				int result=SendMessage(hComboBox,CB_SETCURSEL,2,0);
				
				break;
			}
		case ID_DEMO3_CB_SETEDITSEL:
			{
				SendMessage(hComboBox,CB_SETEDITSEL,(WPARAM) 2,(LPARAM)5);
				break;
			}
		case ID_DEMO3_CB_GETLBTEXT:
			{
				TCHAR buf [1000];
				SendMessage(hComboBox,CB_GETLBTEXT,2,(LPARAM)buf);
				break;
			}
		case ID_DEMO3_CB_RESETCONTENT:
			{
				TCHAR buf[1000];
				SendMessage(hComboBox,CB_SETITEMDATA,1,(LPARAM)_T("Toi di hoc"));
				_tcscpy(buf,(TCHAR*)SendMessage(hComboBox,CB_GETITEMDATA,1,0));
				break;
			}
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
		}
		
		break;
	case WM_PAINT:
		hdc = BeginPaint(hWnd, &ps);
		// TODO: Add any drawing code here...
		EndPaint(hWnd, &ps);
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}
// Message handler for about box.
LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	switch (message)
	{
	case WM_INITDIALOG:
		return TRUE;
	case WM_COMMAND:
		if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) 
		{
			EndDialog(hDlg, LOWORD(wParam));
			return TRUE;
		}
		break;
	}
	return FALSE;
}

						