windows编程15-其他控件的事件处理

其他控件的事件处理

在实际开发中，我们往往需要知道哪个按钮被选中了，才能进行下一步的操作。例如对于一组单选按钮，只有一个选项能被选中，最好的办法是将这组按钮作为参数传入一个函数，通过函数返回值判断哪个按钮被选中了。

但遗憾的是，在Windows中不能一次性获得一组按钮的选中状态，只能一个一个地遍历。复选框也是如此。

可以通过SendMessage函数发送BM_GETCHECK消息来获取按钮的选中状态，返回 BST_CHECKED 表示按钮被选中，返回 BST_UNCHECKED 是未被选中。
SendMessage 原型为：

LRESULT WINAPI SendMessage(
    HWND   hWnd,  //窗口（控件）句柄
    UINT   Msg,  //消息类型
    WPARAM wParam,  //附加消息1
    LPARAM lParam  //附加消息2
);

注意：发送 BM_GETCHECK 消息时，wParam 和 lParam 两个参数必须都为 0。

下面的代码会判断一个按钮是否被选中。如果被选中，那么会获取按钮文本并保存到缓冲区：

if( SendMessage(hCheckBox, BM_GETCHECK, 0, 0) == BST_CHECKED ){
    GetWindowText(hCheckBox, szBuffer,  10);
}

请看代码:

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam){
	HDC         hdc;  //设备环境句柄
	PAINTSTRUCT ps;
	RECT        rect;
	//定义两个画刷,请定义为静态变量

	static HWND m_btn;
	static HFONT m_font;
	static HBRUSH hSolidBrush;
	static HBRUSH hHatchBrush;
	static HBRUSH hBrush ;

	static HWND m_edit1;
	static HWND m_static1;

	static HWND m_edit2;
	static HWND m_static2;
	static HWND m_GroupSex;

	static TCHAR szBufSex[10] = {0};  //保存性别
	static TCHAR szBufPeopleType[10] = { 0 };  //人物类型
	static TCHAR szBufCanDo[100] = { 0 };  //会什么
	static TCHAR szBufTemp[4] = { 0 };  //会什么

	static HWND m_eatHwnd;
	static HWND m_drinkHwnd;
	static HWND m_laHwnd;
	static HWND m_saHwnd;
	static HWND m_YellowHwnd;
	
	switch (message){
	case WM_CREATE:


		hSolidBrush = CreateSolidBrush(RGB(0, 100, 0));
		hBrush = CreateSolidBrush(RGB(0x41, 0x96, 0x4F));
		m_font = CreateFont(
			-14/*高度*/, -7/*宽度*/, 0/*不用管*/, 0/*不用管*/, 400 /*一般这个值设为400*/,
			FALSE/*不带斜体*/, FALSE/*不带下划线*/, FALSE/*不带删除线*/,
			DEFAULT_CHARSET,  //这里我们使用默认字符集，还有其他以 _CHARSET 结尾的常量可用
			OUT_CHARACTER_PRECIS, CLIP_CHARACTER_PRECIS,  //这行参数不用管
			DEFAULT_QUALITY,  //默认输出质量
			FF_DONTCARE,  //不指定字体族*/
			L"华文行楷"  //字体名
			);

		m_static1 = CreateWindow(L"static", L"姓名:",
			WS_CHILD /*子窗口*/ | WS_VISIBLE /*创建时显示*/  ,
			10, 10, 60, 30, hwnd, (HMENU)101, m_hinst, 0);
		m_edit1 = CreateWindow(L"edit", L"",
			WS_CHILD /*子窗口*/ | WS_VISIBLE /*创建时显示*/ | WS_BORDER /*带边框*/ | ES_AUTOHSCROLL | ES_LEFT,
			80, 10, 150, 30, hwnd, (HMENU)102, m_hinst, 0);

		m_static2 = CreateWindow(L"static", L"年龄:",
			WS_CHILD /*子窗口*/ | WS_VISIBLE /*创建时显示*/  /*带边框*/,
			10, 45, 60, 30, hwnd, (HMENU)103, m_hinst, 0);
		m_edit2 = CreateWindow(L"edit", L"",
			WS_CHILD /*子窗口*/ | WS_VISIBLE /*创建时显示*/ | WS_BORDER /*带边框*/ | ES_AUTOHSCROLL | ES_LEFT,
			80, 45, 150, 30, hwnd, (HMENU)104, m_hinst, 0);


		m_btn = CreateWindow(L"button", L"确定",
			WS_CHILD /*子窗口*/ | WS_VISIBLE /*创建时显示*/ | WS_BORDER /*带边框*/ | BS_CENTER | BS_VCENTER | BS_FLAT,
			235, 12, 100, 60, hwnd, (HMENU)1001, m_hinst, 0);
		

		m_GroupSex = CreateWindow(
			TEXT("button"), TEXT("性别"),
			WS_CHILD | WS_VISIBLE | BS_GROUPBOX,
			2, 80, 160, 50,
			hwnd, (HMENU)1, m_hinst, NULL
			);

		//创建一个单选按钮
		CreateWindow(TEXT("button"), TEXT("男"),
			WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON/*单选按钮*/ | WS_GROUP,
			10, 96, 60, 26,
			hwnd, (HMENU)2, m_hinst, NULL
			);

		//创建一个单选按钮
		CreateWindow(TEXT("button"), TEXT("女"),
			WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON/*单选按钮*/,
			80, 96, 60, 26,
			hwnd, (HMENU)3, m_hinst, NULL
			);

		m_GroupSex = CreateWindow(
			TEXT("button"), TEXT("人物类型"),
			WS_CHILD | WS_VISIBLE | BS_GROUPBOX,
			2, 140, 160, 50,
			hwnd, (HMENU)4, m_hinst, NULL
			);

		//创建一个单选按钮
		CreateWindow(TEXT("button"), TEXT("君子"),
			WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON/*单选按钮*/| WS_GROUP, 
			10, 160, 60, 26,
			hwnd, (HMENU)5, m_hinst, NULL
			);

		//创建一个单选按钮
		CreateWindow(TEXT("button"), TEXT("小人"),
			WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON/*单选按钮*/,
			80, 160, 60, 26,
			hwnd, (HMENU)6, m_hinst, NULL
			);

		HWND m_GroupSex2 = CreateWindow(
			TEXT("button"), TEXT("会什么"),
			WS_CHILD | WS_VISIBLE | BS_GROUPBOX,
			10, 200, 280, 60,
			hwnd, (HMENU)1, m_hinst, NULL
			);

	

		///创建一个复选框
		m_eatHwnd = CreateWindow(
			TEXT("button"), TEXT("吃"),
			WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTOCHECKBOX,
			20, 220, 50, 26,
			hwnd, (HMENU)8, m_hinst, NULL
			);
		///创建一个复选框
		m_drinkHwnd = CreateWindow(
			TEXT("button"), TEXT("喝"),
			WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTOCHECKBOX,
			75, 220, 50, 26,
			hwnd, (HMENU)9, m_hinst, NULL
			);

		///创建一个复选框
		m_laHwnd = 	CreateWindow(
			TEXT("button"), TEXT("拉"),
			WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTOCHECKBOX,
			130, 220, 50, 26,
			hwnd, (HMENU)10, m_hinst, NULL
			);
		///创建一个复选框
		m_saHwnd =	CreateWindow(
			TEXT("button"), TEXT("撒"),
			WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTOCHECKBOX,
			185, 220, 50, 26,
			hwnd, (HMENU)11, m_hinst, NULL
			);
		///创建一个复选框
		m_YellowHwnd = CreateWindow(
			TEXT("button"), TEXT("黄"),
			WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTOCHECKBOX,
			240, 220, 50, 26,
			hwnd, (HMENU)12, m_hinst, NULL
			);

		//设置控件字体
		SendMessage(
			m_btn,  //欲设置字体的控件句柄
			WM_SETFONT,  //消息名（消息类型）
			(WPARAM)m_font,  //字体句柄
			NULL  //传空值即可
			);

		//设置控件字体
		SendMessage(
			m_edit1,  //欲设置字体的控件句柄
			WM_SETFONT,  //消息名（消息类型）
			(WPARAM)m_font,  //字体句柄
			NULL  //传空值即可
			);
		//设置控件字体
		SendMessage(
			m_edit2,  //欲设置字体的控件句柄
			WM_SETFONT,  //消息名（消息类型）
			(WPARAM)m_font,  //字体句柄
			NULL  //传空值即可
			);

		
		break;
		//窗口绘制消息
	case WM_PAINT:
	{

	}

		break;
	case WM_CTLCOLORSTATIC:
	{
		HDC m_staticHdc = (HDC)wParam;
		SetTextColor(m_staticHdc, RGB(255, 0, 0));
		SetBkMode(m_staticHdc,TRANSPARENT);
		return (INT_PTR)GetStockObject(NULL_BRUSH);  //这里必须返回画刷句柄

	}
		break;
	case WM_COMMAND:
	{
		int wmId = LOWORD(wParam);
		int wmEvent = HIWORD(wParam);
		if (wmEvent == BN_CLICKED)
		{

			switch (wmId)
			{
				//性别
			case 2:
			case 3:
				GetWindowText((HWND)lParam, szBufSex, 10);
				break;
				//人物类型
			case 5:
			case 6:
				GetWindowText((HWND)lParam, szBufPeopleType, 10);
				break;
				//会什么
			case 8:
			case 9:
			case 10:
			case 11:
			case 12:
				
				memset(szBufCanDo, 0, sizeof(szBufCanDo));
				if (SendMessage(m_eatHwnd,BM_GETCHECK,0,0) == BST_CHECKED)
				{
					GetWindowText(m_eatHwnd, szBufTemp, 4);
					wsprintf(szBufCanDo,L"%s,%s", szBufCanDo, szBufTemp);
				}
				if (SendMessage(m_drinkHwnd, BM_GETCHECK, 0, 0) == BST_CHECKED)
				{
					GetWindowText(m_drinkHwnd, szBufTemp, 4);
					wsprintf(szBufCanDo, L"%s,%s", szBufCanDo, szBufTemp);
				}
				if (SendMessage(m_laHwnd, BM_GETCHECK, 0, 0) == BST_CHECKED)
				{
					GetWindowText(m_laHwnd, szBufTemp, 4);
					wsprintf(szBufCanDo, L"%s,%s", szBufCanDo, szBufTemp);
				}
				if (SendMessage(m_saHwnd, BM_GETCHECK, 0, 0) == BST_CHECKED)
				{
					GetWindowText(m_saHwnd, szBufTemp, 4);
					wsprintf(szBufCanDo, L"%s,%s", szBufCanDo, szBufTemp);
				}
				if (SendMessage(m_YellowHwnd, BM_GETCHECK, 0, 0) == BST_CHECKED)
				{
					GetWindowText(m_YellowHwnd, szBufTemp, 4);
					wsprintf(szBufCanDo, L"%s,%s", szBufCanDo, szBufTemp);
				}

				break;
			case 1001:  //按下按钮
				//更改文本框的内容
			{
				wchar_t  buf1[24] = { 0 };
				GetWindowText(m_edit1, buf1, 24);
				wchar_t  buf2[4] = { 0 };
				GetWindowText(m_edit2, buf2, 4);

				wchar_t  buf3[32] = { 0 };
				wsprintf(buf3, L"姓名:%s\n年龄:%s", buf1, buf2);
				
				TCHAR buf[128] = { 0 };
				wsprintf(buf, L"%s\n性别:%s\n人物类型:%s\n会做:%s\n", buf3, szBufSex, szBufPeopleType, szBufCanDo);
				MessageBox(NULL, buf, TEXT("提示"), 0);
			}
				break;

			default:
				break;
			}

		}
		
		switch (wmId)
		{
		
		default:
			//不处理的消息一定要交给 DefWindowProc 处理。
			return DefWindowProc(hwnd, message, wParam, lParam);
		}
	}
		break;
		//窗口销毁消息
	case WM_DESTROY:
		//释放资源
		DeleteObject(m_font);//删除创建的字体
		PostQuitMessage(0);
		return 0;
	}
	return DefWindowProc(hwnd, message, wParam, lParam);
}

结果: