Visual-C++课后习题参考答案.doc

4-5参考答案：#include #include #include #include #define Pi 3.1415926long WINAPI WndProc(HWND hWnd,UINT iMessage,UINT wParam,LONG lParam);/消息处理函数声明.BOOL InitWindowsClass(HINSTANCE hInstance);/初始化窗口类声明BOOL InitWindows(HINSTANCE hInstance, int nCmdShow);/初始化窗口声明.HWND hWndMain;int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)/主函数MSG Message;if(!InitWindowsClass(hInstance)/初始化窗口类.return FALSE;if(!InitWindows(hInstance,nCmdShow)/初始化窗口.return FALSE;while(GetMessage(&Message,0,0,0)TranslateMessage(&Message);/消息循环.DispatchMessage(&Message);return Message.wParam;long WINAPI WndProc(HWND hWnd,UINT iMessage,UINT wParam,LONG lParam)/消息处理函数.HDC hDC;/定义设备环境句柄.HBRUSH hBrush;/定义画刷句柄HPEN hPen;/定义画笔句柄PAINTSTRUCT PtStr;/定义包含绘图信息的结构体变量double dfRadious0=100.0,dfRadious1;/定义外部和内部正五边形外接圆半径.POINT lpOuterPoints5,lpInnerPoints5;/定义外,内正五边形点结构数组.POINT lpTriangle3; /定义三角形点结构数组.dfRadious1=dfRadious0*sin(0.1*Pi)/sin(126.0/180*Pi);/根据外圆半径计算内园半径./计算内外正五边形的点坐标.for(int i=0;i5;i+)lpOuterPointsi.x=(long)(dfRadious0*cos(i*72.0/180*Pi);lpOuterPointsi.y=(long)(dfRadious0*sin(i*72.0/180*Pi);lpInnerPointsi.x=(long)(dfRadious1*cos(i*72.0/180*Pi+36.0/180*Pi);lpInnerPointsi.y=(long)(dfRadious1*sin(i*72.0/180*Pi+36.0/180*Pi);switch(iMessage)case WM_PAINT:/处理绘图消息.hDC=BeginPaint(hWnd,&PtStr);/得到设备环境句柄SetMapMode(hDC,MM_ANISOTROPIC);/设置映射模式.SetWindowOrgEx(hDC,-100,-100,NULL);/设置坐标原点.hPen=CreatePen(PS_SOLID,1,RGB(255,0,0);/创新红色画笔.SelectObject(hDC,hPen);/将画笔选入.Polygon(hDC,lpOuterPoints,5);/画正五边形./填充正五边形的不同区域.for(i=0;i5;i+)lpTriangle0=lpOuterPointsi%5;/生成图形中的三角形区域的坐标.lpTriangle1=lpInnerPointsi%5;lpTriangle2=lpOuterPoints(i+1)%5;/创新新画刷.hBrush=CreateSolidBrush(RGB(i*10,i*20,i*30);SelectObject(hDC,hBrush);/选入新画刷.Polygon(hDC,lpTriangle,3);/画三角形区域.lpTriangle2=lpInnerPoints(i+4)%5;/生成图形中的三角形区域的坐标.hBrush=CreateSolidBrush(RGB(i*40,i*30,i*20);/创新画刷.SelectObject(hDC,hBrush);/选入画刷.Polygon(hDC,lpTriangle,3);/画三角形区域.hBrush=CreateSolidBrush(RGB(255,255,255);/创新白画刷.SelectObject(hDC,hBrush);/选入画刷.Polygon(hDC,lpInnerPoints,5);/画中心的五边形./用不同种颜色的画笔来绘制五角星.MoveToEx(hDC,lpOuterPoints0.x,lpOuterPoints0.y,NULL);for(i=1;i=5;i+)hPen=CreatePen(PS_SOLID,1,RGB(0,i*51,0);SelectObject(hDC,hPen);LineTo(hDC,lpOuterPoints(i+2)%5.x,lpOuterPoints(i+2)%5.y);hPen=(HPEN)(GetStockObject(PS_NULL);DeleteObject(hPen);/删除画笔.DeleteObject(hBrush);/删除画刷.EndPaint(hWnd,&PtStr);/结束绘图.return 0;case WM_DESTROY:/处理关闭窗口信息.PostQuitMessage(0);/向应用程序发送WM_QUIT消息.return 0;default:return(DefWindowProc(hWnd,iMessage,wParam,lParam);BOOL InitWindows(HINSTANCE hInstance, int nCmdShow)/初始化HWND hWnd;/定义窗口句柄.hWnd=CreateWindow(Polygon,/窗口类名.五边形,/窗口实例标题.WS_OVERLAPPEDWINDOW,/窗口风格.带边框,标题栏,系统菜单和最大和最小按钮.CW_USEDEFAULT,/窗口左上角坐标.0,/窗口左上角坐标.CW_USEDEFAULT,/窗口宽度0,/窗口高度NULL,/无父窗口.NULL,/无主菜单.hInstance,/创建此窗口的应用程序的当前句柄.NULL);/指向一个传递给窗口的参数值从指针./不使用该值.if(!hWnd)/如果窗口创建失败,返回false.return FALSE;hWndMain=hWnd;/将窗口句柄传递给全局变量.ShowWindow(hWnd,nCmdShow);/显示窗口.UpdateWindow(hWnd);/更新并绘制用户区.return TRUE;BOOL InitWindowsClass(HINSTANCE hInstance)/初始化窗口类.WNDCLASS WndClass;/定义窗口类.WndClass.cbClsExtra=0;/窗口类无扩展.WndClass.cbWndExtra=0;/窗口实例无扩展.WndClass.hbrBackground=(HBRUSH)(GetStockObject(WHITE_BRUSH);/窗口背景为白色.WndClass.hCursor=LoadCursor(NULL,IDC_ARROW);/窗口采用箭头光标.WndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);/窗口的最小化图标为缺省图标.WndClass.hInstance=hInstance;/当前实例句柄.WndClass.lpfnWndProc=WndProc;/窗口处理函数.WndClass.lpszClassName=Polygon;/窗口类名.WndClass.lpszMenuName=NULL;/无菜单WndClass.style=0;/窗口类型为缺省类型.return RegisterClass(&WndClass);/返回注册窗口的值.4-6参考答案：#include #include #include #include #define Pi 3.1415926long WINAPI WndProc(HWND hWnd,UINT iMessage,UINT wParam,LONG lParam);/消息处理函数声明.double dfTheta=0,dfRange=100.0;/正弦曲线的角度变量.long i=0,j=0;long lCentreX=0,lCentreY=0,lRadious=(long)(0.2*dfRange);/定义圆心坐标和圆坐标.POINT lpSin100;/定义正弦曲线的点坐标.int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)/主函数MSG Message;/定义消息变量.HWND hWnd;/定义窗口句柄.WNDCLASS WndClass;/定义窗口类.WndClass.cbClsExtra=0;/无窗口类扩展.WndClass.cbWndExtra=0;/无窗口实例扩展.WndClass.hbrBackground=(HBRUSH)(GetStockObject(WHITE_BRUSH);/背景为白色.WndClass.hCursor=LoadCursor(NULL,IDC_ARROW);/窗口采用箭头光标.WndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);/采用缺省图标.WndClass.hInstance=hInstance;/当前应用程序句柄.WndClass.lpfnWndProc=WndProc;/窗口处理函数.WndClass.lpszClassName=SIN;/窗口类名称.WndClass.lpszMenuName=NULL;/无窗口菜单.WndClass.style=0;/窗口类型为缺省类型.if(!RegisterClass(&WndClass)/注册窗口.MessageBeep(0);return FALSE;hWnd=CreateWindow(SIN,/窗口类名.4_6,/标题名.WS_OVERLAPPEDWINDOW,/带标题栏,最大和最小按钮的窗口.CW_USEDEFAULT,/窗口左上角坐标.0,CW_USEDEFAULT,/采用缺省的宽度和高度.0,NULL,/无父窗口.NULL,/无主菜单.hInstance,/当前实例句柄.NULL);/不要此参数.ShowWindow(hWnd,nCmdShow);/显示窗口.UpdateWindow(hWnd);/更新并绘制用户区.for(int j=0;j100;j+)/生成正弦曲线的点坐标.lpSinj.x=(long)(j*2*Pi/100*60);lpSinj.y=(long)(dfRange*sin(j*2*Pi/100);while(GetMessage(&Message,0,0,0)TranslateMessage(&Message);/消息循环.DispatchMessage(&Message);return Message.wParam;long WINAPI WndProc(HWND hWnd,UINT iMessage,UINT wParam,LONG lParam)/消息处理函数.HDC hDC;/定义设备环境句柄.HBRUSH hBrush;/定义画刷句柄HPEN hPen;/定义画笔句柄PAINTSTRUCT PtStr;/定义包含绘图信息的结构体变量switch(iMessage)case WM_PAINT:/处理绘图消息.hDC=BeginPaint(hWnd,&PtStr);/获得设备环境指针.SetWindowOrgEx(hDC,-200,-200,NULL);/设置原点坐标为(-200,-200).hPen=CreatePen(PS_DASH,1,RGB(255,0,0);/创新画笔.SelectObject(hDC,hPen);/选入画笔.Polyline(hDC,lpSin,100);/绘制正弦曲线.if(i=25) /第一个1/4周期.hPen=CreatePen(PS_DASH,1,RGB(255,0,0);/创新红笔.hBrush=CreateHatchBrush(HS_BDIAGONAL,RGB(255,0,0);/创新红画刷.lRadious=(long)(dfRange*0.2+i%25*dfRange*0.4/25);/计算半径.else if(i=50)/第二个1/4周期.hPen=CreatePen(PS_DASH,1,RGB(0,255,0);/创新绿笔.hBrush=CreateHatchBrush(HS_DIAGCROSS,RGB(0,255,0);/创新绿刷.lRadious=(long)(dfRange*0.2+i%25*dfRange*0.4/25);/计算半径.else if(i=75)/第三个周期.hPen=CreatePen(PS_DASH,1,RGB(0,0,255);/创新蓝笔hBrush=CreateHatchBrush(HS_CROSS,RGB(0,0,255);/创新蓝刷.lRadious=(long)(dfRange*0.2+i%25*dfRange*0.4/25);/计算半径.else/第四个周期.hPen=CreatePen(PS_DASH,1,RGB(255,255,0);/创新黄笔hBrush=CreateHatchBrush(HS_VERTICAL,RGB(255,255,0);/创新黄刷.lRadious=(long)(dfRange*0.2+i%25*dfRange*0.4/25);/计算半径.SelectObject(hDC,hBrush);/选入画刷.SelectObject(hDC,hPen);/选入画笔.lCentreX=lpSini.x;/圆心x坐标.lCentreY=lpSini.y;/圆心y坐标.Ellipse(hDC,lCentreX-lRadious,lCentreY-lRadious,lCentreX+lRadious,lCentreY+lRadious);/画圆.i+;DeleteObject(hPen);/删除画笔.DeleteObject(hBrush);/删除画刷.EndPaint(hWnd,&PtStr);/删除设备环境指针.Sleep(100);/停0.1秒.if(i100) InvalidateRect(hWnd,NULL,1);/刷新用户区.return 0;case WM_DESTROY:/关闭窗口.PostQuitMessage(0);return 0;default:return(DefWindowProc(hWnd,iMessage,wParam,lParam);4-7参考答案：#include #include #include #include #define Pi 3.1415926long WINAPI WndProc(HWND hWnd,UINT iMessage,UINT wParam,LONG lParam);/消息处理函数声明.int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)/主函数MSG Message;/定义消息变量.HWND hWnd;/定义窗口句柄.WNDCLASS WndClass;/定义窗口类.WndClass.cbClsExtra=0;/无窗口类扩展.WndClass.cbWndExtra=0;/无窗口实例扩展.WndClass.hbrBackground=(HBRUSH)(GetStockObject(WHITE_BRUSH);/背景为白色.WndClass.hCursor=LoadCursor(NULL,IDC_ARROW);/窗口采用箭头光标.WndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);/采用缺省图标.WndClass.hInstance=hInstance;/当前应用程序句柄.WndClass.lpfnWndProc=WndProc;/窗口处理函数.WndClass.lpszClassName=4_7;/窗口类名称.WndClass.lpszMenuName=NULL;/无窗口菜单.WndClass.style=0;/窗口类型为缺省类型.if(!RegisterClass(&WndClass)/注册窗口.MessageBeep(0);return FALSE;hWnd=CreateWindow(4_7,/窗口类名.4_7,/标题名.WS_OVERLAPPEDWINDOW,/带标题栏,最大和最小按钮的窗口.CW_USEDEFAULT,/窗口左上角坐标.0,600,/采用宽度为450，高度为600.450,NULL,/无父窗口.NULL,/无主菜单.hInstance,/当前实例句柄.NULL);/不要此参数.ShowWindow(hWnd,nCmdShow);/显示窗口.UpdateWindow(hWnd);/更新并绘制用户区.while(GetMessage(&Message,0,0,0)TranslateMessage(&Message);/消息循环.DispatchMessage(&Message);return Message.wParam;long WINAPI WndProc(HWND hWnd,UINT iMessage,UINT wParam,LONG lParam)/消息处理函数.HDC hDC;/定义设备环境句柄.HBRUSH hBrush;/定义画刷句柄HPEN hPen;/定义画笔句柄PAINTSTRUCT PtStr;/定义包含绘图信息的结构体变量switch(iMessage)case WM_PAINT:/处理绘图消息.hDC=BeginPaint(hWnd,&PtStr);/获得设备环境指针.SetMapMode(hDC,MM_ANISOTROPIC);/设置映射模式.SetWindowExtEx(hDC,300,300,NULL);/设置窗口区域.逻辑单位.SetViewportExtEx(hDC,600,600,NULL);/设置视口区域.物理单位.SetViewportOrgEx(hDC,0,0,NULL);/设置视口原点坐标为(0,0).物理单位./绘制四个圆形.(笔的样式不同)hBrush = (HBRUSH)GetStockObject(NULL_BRUSH);/选择空画刷.SelectObject(hDC,hBrush);hPen = CreatePen(PS_DASH,0,RGB(255,0,0);/建立虚线样式的红色笔SelectObject(hDC,hPen);/选入设备环境.Ellipse(hDC,0,0,70,70);/画圆.hPen = CreatePen(PS_DASHDOT,0,RGB(0,255,0);/建立点划线样式的绿色笔SelectObject(hDC,hPen);Ellipse(hDC,25,0,95,70);/画圆.hPen = CreatePen(PS_DASHDOTDOT,0,RGB(0,0,255);/建立双点划线样式的蓝色笔SelectObject(hDC,hPen);Ellipse(hDC,0,25,70,95);hPen = CreatePen(PS_DOT,0,RGB(0,255,255);/建立点线样式的天蓝色笔SelectObject(hDC,hPen);Ellipse(hDC,25,25,95,95);/画6个圆角矩形.(实画刷样式不同.)hPen = (HPEN)GetStockObject(BLACK_PEN);SelectObject(hDC,hPen);hBrush = (HBRUSH)GetStockObject(BLACK_BRUSH);/选择黑画刷.SelectObject(hDC,hBrush);/选入设备环境.RoundRect(hDC,120,0,165,45,10,10);/画圆角矩形.hBrush = (HBRUSH)GetStockObject(DKGRAY_BRUSH);/选择深灰画刷.SelectObject(hDC,hBrush);RoundRect(hDC,165,0,210,45,10,10);hBrush = (HBRUSH)GetStockObject(GRAY_BRUSH);/选择灰画刷.SelectObject(hDC,hBrush);RoundRect(hDC,210,0,255,45,10,10);hBrush = (HBRUSH)GetStockObject(HOLLOW_BRUSH);/选择虚画刷.SelectObject(hDC,hBrush);RoundRect(hDC,120,45,165,90,10,10);hBrush = (HBRUSH)GetStockObject(LTGRAY_BRUSH);/选择亮灰画刷.SelectObject(hDC,hBrush);RoundRect(hDC,165,45,210,90,10,10);hBrush = (HBRUSH)GetStockObject(WHITE_BRUSH);/选择白画刷.SelectObject(hDC,hBrush);RoundRect(hDC,210,45,255,90,10,10);/画6个矩形.(画刷阴影样式不同.)hPen = (HPEN)GetStockObject(BLACK_PEN);SelectObject(hDC,hPen);hBrush = CreateHatchBrush(HS_BDIAGONAL,RGB(200,200,200);/创建45度左上右下阴影线SelectObject(hDC,hBrush);/选入设备环境.Rectangle(hDC,120,90,165,135);/画矩形.hBrush = CreateHatchBrush(HS_DIAGCROSS,RGB(200,200,200);/创建45度交叉线SelectObject(hDC,hBrush);Rectangle(hDC,165,90,210,135);hBrush = CreateHatchBrush(HS_FDIAGONAL,RGB(200,200,200);/创建45度左下右上阴影线.SelectObject(hDC,hBrush);Rectangle(hDC,210,90,255,135);hBrush = CreateHatchBrush(HS_CROSS,RGB(200,200,200);/创建垂直相交阴影线.SelectObject(hDC,hBrush);Rectangle(hDC,120,135,165,175);hBrush = CreateHatchBrush(HS_HORIZONTAL,RGB(200,200,200);/创建水平阴影线.SelectObject(hDC,hBrush);Rectangle(hDC,165,135,210,175);hBrush = CreateHatchBrush(HS_VERTICAL,RGB(200,200,200);/创建垂直阴影线.SelectObject(hDC,hBrush);Rectangle(hDC,210,135,255,175);/画饼图。hPen = (HPEN)GetStockObject(BLACK_PEN);SelectObject(hDC,hPen);hBrush = CreateSolidBrush(RGB(255,0,0);/创建红色画刷。SelectObject(hDC,hBrush);/选入设备环境。Pie(hDC,10,100,/画饼图。100,190,(int)(55+45*cos(2*Pi/3),(int)(145+45*sin(2*Pi/3),(int)(55+45*cos(0),(int)(145+45*sin(0);hBrush = CreateSolidBrush(RGB(0,255,255);/创建天蓝色画刷。SelectObject(hDC,hBrush);/选入设备环境。Pie(hDC,10,100,100,190,(int)(55+45*cos(4*Pi/3),(int)(145+45*sin(4*Pi/3),(int)(55+45*cos(2*Pi/3),(int)(145+45*sin(2*Pi/3);hBrush = CreateSolidBrush(RGB(255,255,0);/创建黄色画刷。SelectObject(hDC,hBrush);/选入设备环境。Pie(hDC,10,100,100,190,(int)(55+45*cos(2*Pi),(int)(145+45*sin(2*Pi),(int)(55+45*cos(4*Pi/3),(int)(145+45*sin(4*Pi/3);EndPaint(hWnd,&PtStr);/释放环境指针。return 0;case WM_DESTROY:/关闭窗口.PostQuitMessage(0);return 0;default:return(DefWindowProc(hWnd,iMessage,wParam,lParam);4-8参考答案：#include #include #include #include #define Pi 3.1415926long WINAPI WndProc(HWND hWnd,UINT iMessage,UINT wParam,LONG lParam);/消息处理函数声明.int nNum = 0,nMaxNum = 20;/nMaxNum记录了叶片循环一周中绘图的次数./nNum记录了当前的序数.int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)/主函数MSG Message;/定义消息变量.HWND hWnd;/定义窗口句柄.WNDCLASS WndClass;/定义窗口类.WndClass.cbClsExtra=0;/无窗口类扩展.WndClass.cbWndExtra=0;/无窗口实例扩展.WndClass.hbrBackground=(HBRUSH)(GetStockObject(WHITE_BRUSH);/背景为白色.WndClass.hCursor=LoadCursor(NULL,IDC_ARROW);/窗口采用箭头光标.WndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);/采用缺省图标.WndClass.hInstance=hInstance;/当前应用程序句柄.WndClass.lpfnWndProc=WndProc;/窗口处理函数.WndClass.lpszClassName=4_8;/窗口类名称.WndClass.lpszMenuName=NULL;/无窗口菜单.WndClass.style=0;/窗口类型为缺省类型.if(!RegisterClass(&WndClass)/注册窗口.MessageBeep(0);return FALSE;hWnd=CreateWindow(4_8,/窗口类名.4_8,/标题名.WS_OVERLAPPEDWINDOW,/带标题栏,最大和最小按钮的窗口.CW_USEDEFAULT,/窗口左上角坐标.0,600,/采用宽度为450，高度为600.450,NULL,/无父窗口.NULL,/无主菜单.hInstance,/当前实例句柄.NULL);/不要此参数.ShowWindow(hWnd,nCmdShow);/显示窗口.UpdateWindow(hWnd);/更新并绘制用户区.while(GetMessage(&Message,0,0,0)TranslateMessage(&Message);/消息循环.DispatchMessage(&Message);return Message.wParam;long WINAPI WndProc(HWND hWnd,UINT iMessage,UINT wParam,LONG lParam)/消息处理函数.HDC hDC;/定义设备环境句柄.HBRUSH hBrush;/定义画刷句柄HPEN hPen;/定义画笔句柄PAINTSTRUCT PtStr;/定义包含绘图信息的结构体变量int nCentreX,nCentreY;/定义3个叶片的圆心的坐标.double fAngle;switch(iMessage)case WM_PAINT:/处理绘图消息.hDC=BeginPaint(hWnd,&PtStr);/获得设备环境指针.SetMapMode(hDC,MM_ANISOTROPIC);/设置映射模式.SetWindowExtEx(hDC,400,300,NULL);/设置窗口区域.逻辑单位.SetViewportExtEx(hDC,600,450,NULL);/设置视口区域.物理单位.SetViewportOrgEx(hDC,300,200,NULL);/设置视口原点坐标为(300,200).物理单位./绘制外圆。hPen = (HPEN)GetStockObject(BLACK_PEN);SelectObject(hDC,hPen);Ellipse(hDC,-100,-100,100,100);/绘制风车的叶片。hBrush = CreateSolidBrush(RGB(255,0,0);/画红色的叶片.SelectObject(hDC,hBrush);fAngle = 2*Pi/nMaxNum*nNum;nCentreX = (int)(50*cos(fAngle);nCentreY = (int)(50*sin(fAngle);Pie(hDC,nCentreX-50,nCentreY-50,nCentreX+50,nCentreY+50,(int)(nCentreX+50*cos(fAngle),(int)(nCentreY+50*sin(fAngle),(int)(nCentreX+50*cos(fAngle+Pi),(int)(nCentreY+50*sin(fAngle+Pi);hBrush = CreateSolidBrush(RGB(255,255,0);/画天蓝色的叶片.SelectObject(hDC,hBrush);nCentreX = (int)(50*cos(fAngle+2*Pi/3);nCentreY = (int)(50*sin(fAngle+2*Pi/3);Pie(hDC,nCentreX-50,nCentreY-50,nCentreX+50,nCentreY+50,(int)(nCentreX+50*cos(fAngle+2*Pi/3),(int)(nCentreY+50*sin(fAngle+2*Pi/3),(int)(nCentreX+50*cos(fAngle+Pi+2*Pi/3),(int)(nCentreY+50*sin(fAngle+Pi+2*Pi/3);hBrush = CreateSolidBrush(RGB(0,255,255);/画黄色的叶片.SelectObject(hDC,hBrush);nCentreX = (int)(50*cos(fAngle+4*Pi/3);nCentreY = (int)(50*sin(fAngle+4*Pi/3);Pie(hDC,nCentreX-50,nCentreY-50,nCentreX+50,nCentreY+50,(int)(nCentreX+50*cos(fAngle+4*Pi/3),(int)(nCentreY+50*sin(fAngle+4*Pi/3),(int)(nCentreX+50*cos(fAngle+Pi+4*Pi/3),(int)(nCentreY+50*sin(fAngle+Pi+4*Pi/3);nNum+;/当前序数加1.Sleep(100);/等待0.1秒.InvalidateRect(hWnd,NULL,1);/重绘窗口区域.EndPaint(hWnd,&PtStr);/释放环境指针。return 0;case WM_DESTROY:/关闭窗口.PostQuitMessage(0);return 0;default:return(DefWindowProc(hWnd,iMessage,wParam,lParam);4-9参考答案： #include #define ID_T