win32API 绘制文字型按钮

一、建立菜单
struct GameMenu
{
int id;//按钮ID
TCHAR szName[10];//按钮名称
int xPos;//距离客户区左边的位置
int yPos;//距离客户区顶部的位置
}menu[] = {
{ 1, TEXT(“开始游戏”), 345, 250 },
{ 2, TEXT(“查看帮助”), 345, 300 },
{ 3, TEXT(“作者博客”), 345, 350 },
{ 4, TEXT(“退出游戏”), 345, 400 }
};
二、绘制菜单

    HDC hdc = GetDC(hwnd);//建立设备DC    HPEN hPen;//创建画笔    HFONT hFont;//创建字体    HBRUSH hBrush;//创建画刷    LOGFONT lf = { 0 };    wcscpy(lf.lfFaceName, L"隶书");    lf.lfWidth = 12;    lf.lfHeight = 25;    lf.lfWeight = FW_NORMAL;    lf.lfCharSet = GB2312_CHARSET;    hPen = CreatePen(PS_SOLID, 5, RGB(0, 0, 255));    hFont = CreateFontIndirect(&lf);    hBrush = CreateSolidBrush(RGB(0, 0, 0));//选择对象到hdc    SelectObject(hdc, hPen);    SelectObject(hdc, hFont);    SelectObject(hdc, hBrush);    SetBkMode(hdc, TRANSPARENT);    SetBkColor(hdc, RGB(0, 0, 0));    SetTextCharacterExtra(hdc, 3);    SetTextColor(hdc, RGB(255, 255, 255));    int i = 0;    for (i; i < 4; i++)        TextOut(hdc, menu[i].xPos, menu[i].yPos, menu[i].szName, lstrlen(menu[i].szName));    DeleteObject(hPen);    DeleteObject(hFont);    DeleteObject(hBrush);

三、菜单的处理
虽然我们已经建立的菜单，但这样的菜单是没什么用的，还需要添加相应的处理函数。处理的原理简单说来就是判断鼠标位置-》响应不同的处理消息进行处理。
1.判断鼠标消息
首先我们建立一个计时器，出发WM_TIMER小时，用来持续检测鼠标位置。
SetTimer(hwnd, 1, 100, NULL);
2.位置判断

//返回位置1，2，3，4，分别代表4个按钮。int DealMouseMove(HWND hwnd){    POINT pt;    GetCursorPos(&pt);    ScreenToClient(hwnd, &pt);    if (pt.x < 340) return 0;    if (pt.x > 450) return 0;    if (pt.y < 245) return 0;    if (pt.y > 435) return 0;    if (pt.y > 250 && pt.y < 285)        return 1;    if (pt.y > 300 && pt.y < 335)        return 2;    if (pt.y > 350 && pt.y < 385)        return 3;    if (pt.y > 400 && pt.y < 435)        return 4;    return 0;}

3.在 WM_TIMER消息中添加处理函数

//menuID，oldMenuID 为全局变量，用以保存menuID = DealMouseMove(hwnd);//得到ID//处理鼠标悬停if (menuID != oldMenuID && menuID > 0){DrawSelectedMenu(hwnd, menuID-1);oldMenuID = menuID;}

处理悬停代码如下：

void creatmenu2(HWND hwnd){    HDC hdc = GetDC(hwnd);    HPEN hPen;    HFONT hFont;    HBRUSH hBrush;    LOGFONT lf = { 0 };    wcscpy(lf.lfFaceName, L"隶书");    lf.lfWidth = 12;    lf.lfHeight = 25;    lf.lfWeight = FW_NORMAL;    lf.lfCharSet = GB2312_CHARSET;    hPen = CreatePen(PS_SOLID, 5, RGB(0, 0, 255));    hFont = CreateFontIndirect(&lf);    hBrush = CreateSolidBrush(RGB(0, 0, 0));    SelectObject(hdc, hPen);    SelectObject(hdc, hFont);    SelectObject(hdc, hBrush);    SetBkMode(hdc, TRANSPARENT);    SetBkColor(hdc, RGB(0, 0, 0));    SetTextCharacterExtra(hdc, 3);    SetTextColor(hdc, RGB(255, 255, 255));    int i = 0;    for (i; i < 4; i++)        TextOut(hdc, menu[i].xPos, menu[i].yPos, menu[i].szName, lstrlen(menu[i].szName));    DeleteObject(hPen);    DeleteObject(hFont);    DeleteObject(hBrush);}void DrawBlackText(HWND hwnd,int i){    HDC hdc = GetDC(hwnd);    HPEN hPen;    HFONT hFont;    HBRUSH hBrush;    LOGFONT lf = { 0 };    wcscpy(lf.lfFaceName, L"隶书");    lf.lfWidth = 12;    lf.lfHeight = 25;    lf.lfWeight = FW_NORMAL;    lf.lfCharSet = GB2312_CHARSET;    hPen = CreatePen(PS_SOLID, 5, RGB(0, 0, 255));    hFont = CreateFontIndirect(&lf);    hBrush = CreateSolidBrush(RGB(0, 0, 0));    SelectObject(hdc, hPen);    SelectObject(hdc, hFont);    SelectObject(hdc, hBrush);    SetBkMode(hdc, TRANSPARENT);    SetBkColor(hdc, RGB(0, 0, 0));    SetTextCharacterExtra(hdc, 3);    SetTextColor(hdc, RGB(0, 0, 0));    TextOut(hdc, menu[i].xPos, menu[i].yPos, menu[i].szName, lstrlen(menu[i].szName));    DeleteObject(hPen);    DeleteObject(hFont);    DeleteObject(hBrush);}void DrawSelectedMenu(HWND hwnd,int i){    creatmenu2(hwnd);    DrawBlackText(hwnd, i);}void DrawSelectedMenu(HWND hwnd,int i){    creatmenu2(hwnd);    DrawBlackText(hwnd, i);}

最终效果如图：

四。处理鼠标点击时间，这一部分主要是利用menuID这个全局变量，在WM_LBUTTONDOWN消息中添加处理函数
如：
switch (menuID)
{
case 1:// 点击开始，打开百度
ShellExecute(NULL, L"open", L"http://www.baidu.com", NULL, NULL, SW_SHOW);
break;
case 4:// 点击退出，退出程序
PostQuitMessage(0);
break;