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一、创建按钮

单选按钮和复选框都是一种特殊的按钮，窗口类名称都是button，只不过增加了一些特殊的窗口样式罢了。单选按钮的样式为BS_AUTORADIOBUTTON，复选框的样式为BS_AUTOCHECKBOX。例如：

//创建一个单选按钮CreateWindow(    TEXT("button"), TEXT("单选按钮"),    WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON/*单选按钮*/,    235, 40, 100, 26,    hWnd, (HMENU)7, hInst, NULL);//创建一个复选框CreateWindow(    TEXT("button"), TEXT("复选框"),    WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTOCHECKBOX/*复选框*/,    95, 70, 50, 26,    hWnd, (HMENU)9, hInst, NULL);

单选按钮一般是分组的，一组单选按钮之间是互斥的，只能选择其中一个。一个窗口可以包含多组单选按钮。

要想为单选按钮分组，可以增加WS_GROUP样式。设置了 WS_GROUP 样式的单选框为一组中的首元素，随后的所有单选按钮都和它在同一组，直到下一个设置了 WS_GROUP 样式的单选按钮。

示例

//窗口过程LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){       PAINTSTRUCT ps;    HDC hdc;    static HFONT hFont;  //逻辑字体    //一组单选按钮    static HWND labSex;  //静态文本框--性别    static HWND radioMale;  //单选按钮--男    static HWND radioFemale;  //单选按钮--女    //一组单选按钮    static HWND labMarriage;  //静态文本框--婚姻状况    static HWND radioMarried;  //单选按钮--已婚    static HWND radioSingle;  //单选按钮--未婚    static HWND radioSecrecy;  //单选按钮--保密    //一组复选框    static HWND labPet;  //静态文本框--你的宠物    static HWND checkboxDog;  //复选框--狗    static HWND checkboxCat;  //复选框--猫    static HWND checkboxFish;  //复选框--鱼    static HWND checkboxOther;  //复选框--其他    switch (message){           case  WM_CREATE:            hFont = CreateFont(                -14, -7, 0, 0, 400,                FALSE, FALSE, FALSE,DEFAULT_CHARSET,                OUT_CHARACTER_PRECIS, CLIP_CHARACTER_PRECIS, DEFAULT_QUALITY,                FF_DONTCARE, TEXT("微软雅黑")            );            //选择性别            labSex = CreateWindow(                TEXT("static"), TEXT("你的性别："),                WS_CHILD | WS_VISIBLE | SS_CENTERIMAGE | SS_RIGHT/*文字居右*/,                10, 10, 80, 26,                hWnd, (HMENU)1, hInst, NULL            );            radioMale = CreateWindow(                TEXT("button"), TEXT("男"),                WS_CHILD | WS_VISIBLE | BS_LEFT/*文字居左*/ | BS_AUTORADIOBUTTON /*单选按钮*/ | WS_GROUP,                95, 10, 50, 26,                hWnd, (HMENU)2, hInst, NULL            );            radioFemale = CreateWindow(                TEXT("button"), TEXT("女"),                WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON,                150, 10, 50, 26,                hWnd, (HMENU)2, hInst, NULL            );            //选择婚姻状况            labMarriage = CreateWindow(                TEXT("static"), TEXT("婚姻状况："),                WS_CHILD | WS_VISIBLE | SS_CENTERIMAGE | SS_RIGHT,                10, 40, 80, 26,                hWnd, (HMENU)4, hInst, NULL            );            radioMarried = CreateWindow(                TEXT("button"), TEXT("已婚"),                WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON | WS_GROUP,                95, 40, 65, 26,                hWnd, (HMENU)5, hInst, NULL            );            radioSingle = CreateWindow(                TEXT("button"), TEXT("未婚"),                WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON,                165, 40, 65, 26,                hWnd, (HMENU)6, hInst, NULL            );            radioSecrecy = CreateWindow(                TEXT("button"), TEXT("保密"),                WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON,                235, 40, 100, 26,                hWnd, (HMENU)7, hInst, NULL            );            //你的宠物            labPet = CreateWindow(                TEXT("static"), TEXT("你的宠物："),                WS_CHILD | WS_VISIBLE | SS_CENTERIMAGE | SS_RIGHT,                10, 70, 80, 26,                hWnd, (HMENU)8, hInst, NULL            );                       checkboxDog = CreateWindow(                TEXT("button"), TEXT("狗"),                WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTOCHECKBOX/*复选框*/,                95, 70, 50, 26,                hWnd, (HMENU)9, hInst, NULL            );            checkboxCat = CreateWindow(                TEXT("button"), TEXT("猫"),                WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTOCHECKBOX,                150, 70, 50, 26,                hWnd, (HMENU)10, hInst, NULL            );            checkboxFish = CreateWindow(                TEXT("button"), TEXT("鱼"),                WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTOCHECKBOX,                205, 70, 50, 26,                hWnd, (HMENU)11, hInst, NULL            );            checkboxOther = CreateWindow(                TEXT("button"), TEXT("其他"),                WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTOCHECKBOX,                260, 70, 65, 26,                hWnd, (HMENU)11, hInst, NULL            );            SendMessage(labSex, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(radioMale, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(radioFemale, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(labMarriage, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(radioMarried, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(radioSingle, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(radioSecrecy, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(labPet, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(checkboxDog, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(checkboxCat, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(checkboxFish, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(checkboxOther, WM_SETFONT, (WPARAM)hFont, NULL);            break;        case WM_PAINT:            hdc = BeginPaint(hWnd, &ps);            // TODO:  在此添加任意绘图代码...            EndPaint(hWnd, &ps);            break;        case WM_DESTROY:            PostQuitMessage(0);            break;        default:            return DefWindowProc(hWnd, message, wParam, lParam);    }    return 0;}

二、分组框控件

使用分组框控件（GroupBox）可以对单选按钮、复选框进行更好的分组

分组框控件也是一种特殊的按钮，它的样式为BS_GROUPBOX(需要注意的是：单选按钮的父窗口为分组框控件 hGroupSex，而不是顶级窗口 hWnd。)，例如：

//创建分组框控件hGroupSex = CreateWindow(    TEXT("button"), TEXT("你的性别"),    WS_CHILD | WS_VISIBLE | BS_GROUPBOX,    20, 20, 300, 70,    hWnd, (HMENU)1, hInst, NULL);//接下来添加单选按钮hRadioMale = CreateWindow(    TEXT("button"), TEXT("男"),    WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON /*单选按钮*/,    15, 30, 50, 26,    hGroupSex /*父窗口为 GroupBox 控件*/, (HMENU)2, hInst, NULL);hRadioFemale = CreateWindow(    TEXT("button"), TEXT("女"),    WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON,    80, 30, 50, 26,    hGroupSex, (HMENU)3, hInst, NULL);

三、判断单选按钮和复选框是否被选中

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：

// 发送 BM_GETCHECK 消息时，wParam 和 lParam 两个参数必须都为 0。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);

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);}

示例代码

#include 
   
    LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);HINSTANCE hInst;int WINAPI WinMain(        HINSTANCE hInstance,        HINSTANCE hPrevInstance,        PSTR szCmdLine,        int iCmdShow){       static TCHAR szClassName[] = TEXT("Win32Demo");    HWND     hwnd;    MSG      msg;    WNDCLASS wndclass;    hInst = hInstance;    wndclass.style = CS_HREDRAW | CS_VREDRAW;    wndclass.lpfnWndProc  = WndProc;    wndclass.cbClsExtra   = 0;    wndclass.cbWndExtra   = 0;    wndclass.hInstance    = hInstance;    wndclass.hIcon        = LoadIcon (NULL, IDI_APPLICATION);    wndclass.hCursor      = LoadCursor (NULL, IDC_ARROW);    wndclass.hbrBackground= (HBRUSH) GetSysColorBrush(COLOR_BTNFACE);    wndclass.lpszMenuName = NULL ;    wndclass.lpszClassName= szClassName;    RegisterClass(&wndclass);    hwnd = CreateWindow(            szClassName,            TEXT("Welcome"),            WS_OVERLAPPEDWINDOW,            CW_USEDEFAULT,            CW_USEDEFAULT,            800,            500,            NULL,            NULL,            hInstance,            NULL    );    //��ʾ����    ShowWindow (hwnd, iCmdShow);    UpdateWindow (hwnd);    while( GetMessage(&msg, NULL, 0, 0) ){           TranslateMessage(&msg);        DispatchMessage (&msg);    }    return msg.wParam;}LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){       int wmId, wmEvent;    PAINTSTRUCT ps;    HDC hdc;    static TCHAR szBufSex[10];    static TCHAR szBufMarriage[10];    static TCHAR szBufPet[20];    static TCHAR szBufSubmit[100];    static TCHAR szBufTmp[10];    static HFONT hFont;    static HWND labSex;    static HWND radioMale;    static HWND radioFemale;    static HWND labMarriage;    static HWND radioMarried;    static HWND radioSingle;    static HWND radioSecrecy;    static HWND labPet;    static HWND checkboxDog;    static HWND checkboxCat;    static HWND checkboxFish;    static HWND checkboxOther;    static HWND btnSubmit;    switch (message){           case  WM_CREATE:            hFont = CreateFont(                    -14, -7, 0, 0, 400,                    FALSE, FALSE, FALSE,DEFAULT_CHARSET,                    OUT_CHARACTER_PRECIS, CLIP_CHARACTER_PRECIS, DEFAULT_QUALITY,                    FF_DONTCARE, TEXT("xxx")            );            //ѡ���Ա�            labSex = CreateWindow(                    TEXT("static"), TEXT("你的性别："),                    WS_CHILD | WS_VISIBLE | SS_CENTERIMAGE | SS_RIGHT,                    10, 10, 80, 26,                    hWnd, (HMENU)1, hInst, NULL            );            radioMale = CreateWindow(                    TEXT("button"), TEXT("男"),                    WS_CHILD | WS_VISIBLE | BS_LEFT| BS_AUTORADIOBUTTON  | WS_GROUP,                    95, 10, 50, 26,                    hWnd, (HMENU)2, hInst, NULL            );            radioFemale = CreateWindow(                    TEXT("button"), TEXT("女"),                    WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON,                    150, 10, 50, 26,                    hWnd, (HMENU)2, hInst, NULL            );            //ѡ�����״��            labMarriage = CreateWindow(                    TEXT("static"), TEXT("婚姻状况："),                    WS_CHILD | WS_VISIBLE | SS_CENTERIMAGE | SS_RIGHT,                    10, 40, 80, 26,                    hWnd, (HMENU)4, hInst, NULL            );            radioMarried = CreateWindow(                    TEXT("button"), TEXT("已婚"),                    WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON | WS_GROUP,                    95, 40, 65, 26,                    hWnd, (HMENU)5, hInst, NULL            );            radioSingle = CreateWindow(                    TEXT("button"), TEXT("未婚"),                    WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON,                    165, 40, 65, 26,                    hWnd, (HMENU)6, hInst, NULL            );            radioSecrecy = CreateWindow(                    TEXT("button"), TEXT("保密"),                    WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTORADIOBUTTON,                    235, 40, 100, 26,                    hWnd, (HMENU)7, hInst, NULL            );            labPet = CreateWindow(                    TEXT("static"), TEXT("你的宠物:"),                    WS_CHILD | WS_VISIBLE | SS_CENTERIMAGE | SS_RIGHT,                    10, 70, 80, 26,                    hWnd, (HMENU)8, hInst, NULL            );            checkboxDog = CreateWindow(                    TEXT("button"), TEXT("狗"),                    WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTOCHECKBOX,                    95, 70, 50, 26,                    hWnd, (HMENU)9, hInst, NULL            );            checkboxCat = CreateWindow(                    TEXT("button"), TEXT("猫"),                    WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTOCHECKBOX,                    150, 70, 50, 26,                    hWnd, (HMENU)10, hInst, NULL            );            checkboxFish = CreateWindow(                    TEXT("button"), TEXT("鼠"),                    WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTOCHECKBOX,                    205, 70, 50, 26,                    hWnd, (HMENU)11, hInst, NULL            );            checkboxOther = CreateWindow(                    TEXT("button"), TEXT("其他"),                    WS_CHILD | WS_VISIBLE | BS_LEFT | BS_AUTOCHECKBOX,                    260, 70, 65, 26,                    hWnd, (HMENU)12, hInst, NULL            );            btnSubmit = CreateWindow(TEXT("button"), TEXT("提交"),                                     WS_CHILD | WS_VISIBLE | WS_BORDER | BS_FLAT,                                     95, 110, 200, 36,                                     hWnd, (HMENU)13, hInst, NULL            );            SendMessage(labSex, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(radioMale, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(radioFemale, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(labMarriage, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(radioMarried, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(radioSingle, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(radioSecrecy, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(labPet, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(checkboxDog, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(checkboxCat, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(checkboxFish, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(checkboxOther, WM_SETFONT, (WPARAM)hFont, NULL);            SendMessage(btnSubmit, WM_SETFONT, (WPARAM)hFont, NULL);            break;        case WM_COMMAND:            wmId    = LOWORD(wParam);            wmEvent = HIWORD(wParam);            if( wmEvent==  BN_CLICKED){                   switch (wmId){                       case 2:                    case 3:                        GetWindowText((HWND)lParam, szBufSex, 10);                        break;                    case 5:                    case 6:                    case 7:                        GetWindowText((HWND)lParam, szBufMarriage, 10);                        break;                    case 9:                    case 10:                    case 11:                    case 12:                        memset(szBufPet, 0, sizeof(szBufPet));                        if( SendMessage(checkboxDog, BM_GETCHECK, 0, 0) == BST_CHECKED ){                               GetWindowText(checkboxDog, szBufTmp,  10);                            wsprintf(szBufPet, TEXT("%s  %s"), szBufPet, szBufTmp);                        }                        if( SendMessage(checkboxCat, BM_GETCHECK, 0, 0) == BST_CHECKED ){                               GetWindowText(checkboxCat, szBufTmp, 10);                            wsprintf(szBufPet, TEXT("%s  %s"), szBufPet, szBufTmp);                        }                        //�Ƿ�ѡ����                        if( SendMessage(checkboxFish, BM_GETCHECK, 0, 0) == BST_CHECKED ){                               GetWindowText(checkboxFish, szBufTmp, 10);                            wsprintf(szBufPet, TEXT("%s  %s"), szBufPet, szBufTmp);                        }                        //�Ƿ�ѡ������                        if( SendMessage(checkboxOther, BM_GETCHECK, 0, 0) == BST_CHECKED ){                               GetWindowText(checkboxOther, szBufTmp, 10);                            wsprintf(szBufPet, TEXT("%s  %s"), szBufPet, szBufTmp);                        }                        break;                    case 13:                        wsprintf(szBufSubmit, TEXT("你的性别：%s\n婚姻状况：%s\r\n你的宠物：%s"), szBufSex, szBufMarriage, szBufPet);                        MessageBox(hWnd, szBufSubmit, TEXT("信息提示"), MB_ICONINFORMATION);                        break;                    default:                        return DefWindowProc(hWnd, message, wParam, lParam);                }            }            return DefWindowProc(hWnd, message, wParam, lParam);        case WM_DESTROY:            DeleteObject(hFont);            PostQuitMessage(0);            break;        default:            return DefWindowProc(hWnd, message, wParam, lParam);    }    return 0;}
   

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