>_<:use MOUSE_MOVE message refresh the position information.
>_<:use LOWORD(lParam) get position x and use HIWORD(lParam) get position y
1 //{ {NO_DEPENDENCIES}} 2 // Microsoft Visual C++ generated include file. 3 // Used by FE.RC 4 // 5 #define IDR_MAINFRAME 128 6 #define IDD_FE_DIALOG 102 7 #define IDD_ABOUTBOX 103 8 #define IDS_APP_TITLE 103 9 #define IDM_ABOUT 10410 #define IDM_EXIT 10511 #define IDS_HELLO 10612 #define IDI_FE 10713 #define IDI_SMALL 10814 #define IDC_FE 10915 #define IDC_MYICON 216 #define IDC_STATIC -117 // Next default values for new objects18 //19 #ifdef APSTUDIO_INVOKED20 #ifndef APSTUDIO_READONLY_SYMBOLS21 22 #define _APS_NEXT_RESOURCE_VALUE 12923 #define _APS_NEXT_COMMAND_VALUE 3277124 #define _APS_NEXT_CONTROL_VALUE 100025 #define _APS_NEXT_SYMED_VALUE 11026 #endif27 #endif 1 // stdafx.h : include file for standard system include files, 2 // or project specific include files that are used frequently, but 3 // are changed infrequently 4 // 5 #if !defined(AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_) 6 #define AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_ 7 8 #if _MSC_VER > 1000 9 #pragma once10 #endif // _MSC_VER > 100011 12 #define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers13 14 15 // Windows Header Files:16 #include17 18 // C RunTime Header Files19 #include 20 #include 21 #include 22 #include 23 24 // Local Header Files25 26 // TODO: reference additional headers your program requires here27 28 //{ {AFX_INSERT_LOCATION}}29 // Microsoft Visual C++ will insert additional declarations immediately before the previous line.30 31 #endif // !defined(AFX_STDAFX_H__A9DB83DB_A9FD_11D0_BFD1_444553540000__INCLUDED_)
main.cpp
1 #include "stdafx.h" 2 #include "stdio.h" 3 #include "resourse.h" 4 5 #define MAX_LOADSTRING 100 6 7 // Global Variables: 8 HINSTANCE hInst; // current instance 9 TCHAR szTitle[MAX_LOADSTRING]; // The title bar text 10 TCHAR szWindowClass[MAX_LOADSTRING]; // The title bar text 11 12 // Foward declarations of functions included in this code module: 13 ATOM MyRegisterClass(HINSTANCE hInstance); 14 BOOL InitInstance(HINSTANCE, int); 15 LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); 16 //======================================================================================== 17 18 int APIENTRY WinMain(HINSTANCE hInstance, 19 HINSTANCE hPrevInstance, 20 LPSTR lpCmdLine, 21 int nCmdShow) 22 { 23 // TODO: Place code here. 24 MSG msg; 25 26 MyRegisterClass(hInstance);//调用函数向系统注册窗口类别，输入参数hInstance是目前运行程序的对象代码； 27 28 // 调用InitInstance函数，进行初始化操作； 29 if (!InitInstance (hInstance, nCmdShow)) 30 { 31 return FALSE; 32 } 33 34 // 消息循环（通过消息循环来获取信息， 35 //进行必要的键盘信息转换而后将控制权交给操作系统， 36 //有操作系统决定哪个程序的消息处理函数处理消息 37 while (GetMessage(&msg, NULL, 0, 0)) //获取程序消息 38 { 39 TranslateMessage(&msg);//转换伪码及字符 40 DispatchMessage(&msg);//将控制权交给系统，再有系统决定负责处理消息的程序； 41 } 42 43 return msg.wParam; 44 } 45 //===================================================================================== 46 47 48 49 //============================================================================================= 50 //在建立程序窗口实体之前，必须先定义一个窗口类别，其中包含所要建立窗口的信息， 51 //并向系统注册，这里的MyRegisterClass函数就是进行定义及注册窗口类别的函数。 52 //============================================================================================== 53 ATOM MyRegisterClass(HINSTANCE hInstance) 54 { 55 WNDCLASSEX wcex; //申请一个窗口类别“WNDCLASSEX”和结构”wcex“ 56 //-------------------------------------------------------------- 57 //定义vcex结构的各项信息，其中设定信息处理函数（lpfnWndProc） 58 //为WNDPROC，类别名称为（lpszClassName）为”fe"; 59 //-------------------------------------------------------------- 60 wcex.cbSize = sizeof(WNDCLASSEX); 61 62 wcex.style = CS_HREDRAW | CS_VREDRAW; 63 wcex.lpfnWndProc = (WNDPROC)WndProc; 64 wcex.cbClsExtra = 0; 65 wcex.cbWndExtra = 0; 66 wcex.hInstance = hInstance; 67 wcex.hIcon = NULL; 68 wcex.hCursor = NULL; 69 wcex.hCursor = LoadCursor(NULL,IDC_ARROW); 70 wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); 71 wcex.lpszMenuName = NULL; 72 wcex.lpszClassName = "fe"; 73 wcex.hIconSm = NULL; 74 75 return RegisterClassEx(&wcex);//调用RegisterClassEx函数注册类别，返回一个“ATOM"形态的字符串 76 //此字符串即为类别名称”fe"; 77 } 78 //============================================================================================ 79 80 81 //============================================================================================ 82 //按照前面所定义的窗口类别来建立并显示实际的程序窗口 83 //============================================================================================ 84 BOOL InitInstance(HINSTANCE hInstance, int nCmdShow) 85 { 86 HWND hWnd; 87 88 hInst = hInstance; // 把instance handle 储存在全局变量中； 89 90 hWnd = CreateWindow("fe","绘图窗口",WS_OVERLAPPEDWINDOW, 91 CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL); 92 //----------------------------------------------- 93 //调用CreateWindow函数来建立一个窗口对象 94 //第一个参数就是窗口建立依据的类别名称 95 //----------------------------------------------- 96 if (!hWnd) 97 { 98 return FALSE; 99 }100 //------------------------------------------------101 //设定窗口的位置及窗口的大小，然后绘制显示在设备上102 //-------------------------------------------------103 MoveWindow(hWnd,10,10,650,450,true);//位置及大小104 ShowWindow(hWnd, nCmdShow);//改定窗口显示时的状态105 UpdateWindow(hWnd);//将窗口绘制在显示设备上106 107 return TRUE;108 }109 //============================================================================================110 111 112 //============================================================================================113 //显示光标所在位置的坐标函数114 //============================================================================================115 void MyPaint(HDC hdc,LPARAM lParam)116 {117 int x,y;118 char str[20]="";//空字符储存要输在屏幕上的文字119 120 x = LOWORD(lParam); //取得鼠标x坐标值(低位字节的信息)121 y = HIWORD(lParam); //取得鼠标y坐标值(高位字节的信息)122 123 SetTextColor(hdc,RGB(255,200,0));//设定DC上文字颜色124 125 TextOut(hdc,10,10,"鼠标坐标",strlen("鼠标坐标"));//格式化所要显示的字符串，并调用126 sprintf(str,"X 坐标： %d ",x); //TextOut()将其输出在窗口上；127 TextOut(hdc,30,30,str,strlen(str));//----||-BOOL TextOut(HDC hdc,int x,int y输出字符串的坐标,128 sprintf(str,"Y 坐标： %d ",y); //----||-------------LPCTSTR 字符串指针,int 字符串长度);129 TextOut(hdc,30,50,str,strlen(str));130 }131 //============================================================================================132 133 134 //============================================================================================135 //在前面定义类别的时候把WndProc定义为消息处理函数（当某些外部消息发生时，会按消息的类型136 //来决定该如何进行处理。此外该函数也是一个回叫函数（CALLBACK)（windows系统函数）每一个137 //程序都会接收信息，选择性接受、处理；138 //============================================================================================139 LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)140 {141 PAINTSTRUCT ps;142 HDC hdc;143 144 switch (message) //判断消息类型145 {146 case WM_PAINT: //窗口重绘制147 hdc = BeginPaint(hWnd, &ps);148 EndPaint(hWnd, &ps);149 break;150 case WM_MOUSEMOVE: //鼠标移动消息151 hdc = GetDC(hWnd);//BeginPaint()仅用在处理重绘消息上，在其他地方要获得DC要用GetDC();152 MyPaint( hdc, lParam);//MyPaint(hdc,lParam);//lParam鼠标状态相关信息153 ReleaseDC(hWnd,hdc);154 break;155 case WM_DESTROY: //处理窗口结束消息156 PostQuitMessage(0);157 break;158 default:159 return DefWindowProc(hWnd, message, wParam, lParam);160 }161 return 0;162 }163 //============================================================================================