运行效果：
完整工程下载地址： 0积分
以下是完整程序代码：
#include "stdafx.h"//全局变量HINSTANCE hInst;HBITMAP map;HDC hdc,mdc;HWND hWnd;DWORD tPre,tNow;int x=730,y=340;//函数声明ATOM MyRegisterClass(HINSTANCE hInstance);BOOL InitInstance(HINSTANCE, int);LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);void MyPaint(HDC hdc);//主函数int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow){ MSG msg; MyRegisterClass(hInstance); //初始化 if (!InitInstance (hInstance, nCmdShow)) { return FALSE; } //游戏循环 do//while( msg.message!=WM_QUIT ) { if( PeekMessage( &msg, NULL, 0,0 ,PM_REMOVE) ) { TranslateMessage( &msg ); DispatchMessage( &msg ); } else { tNow = GetTickCount(); if(tNow-tPre >= 40) MyPaint(hdc); } }while( msg.message!=WM_QUIT ); return msg.wParam;}//定义及注册视窗类别函数ATOM MyRegisterClass(HINSTANCE hInstance){ WNDCLASSEX wcex; wcex.cbSize = sizeof(WNDCLASSEX); wcex.style = CS_HREDRAW | CS_VREDRAW; wcex.lpfnWndProc = (WNDPROC)WndProc; wcex.cbClsExtra = 0; wcex.cbWndExtra = 0; wcex.hInstance = hInstance; wcex.hIcon = NULL; wcex.hCursor = NULL; wcex.hCursor = LoadCursor(NULL, IDC_ARROW); wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); wcex.lpszMenuName = NULL; wcex.lpszClassName = "seek"; //窗口类名称 wcex.hIconSm = NULL; return RegisterClassEx(&wcex); //注册窗口类别}//创建窗体以及加载背景BOOL InitInstance(HINSTANCE hInstance, int nCmdShow){ hInst = hInstance; hWnd = CreateWindow("seek", "卷轴-世界地图查看器V1.1" , WS_OVERLAPPED|WS_SYSMENU|WS_MINIMIZEBOX, //禁用最大化按钮 CW_USEDEFAULT, 0, CW_USEDEFAULT,0, NULL, NULL, hInstance, NULL); if (!hWnd) { return FALSE; } MoveWindow(hWnd,100,80,640,480,true); ShowWindow(hWnd, nCmdShow); UpdateWindow(hWnd); hdc = GetDC(hWnd); mdc = CreateCompatibleDC(hdc); map = (HBITMAP)LoadImage(NULL,"map.bmp",IMAGE_BITMAP,2792,1831,LR_LOADFROMFILE); SelectObject(mdc,map); MyPaint(hdc); return TRUE;}//自定义绘图函数void MyPaint(HDC hdc){ BitBlt(hdc,0,0,640,480,mdc,x,y,SRCCOPY); tPre = GetTickCount();}//消息处理过程函数LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){ switch (message) { //鼠标左键单击按下事件 case WM_LBUTTONDOWN: x += ( LOWORD(lParam) - /*320*/240 ); y += ( HIWORD(lParam) - 240 ); //坐标矫正 if( (y < 27 && (y = 27)) || (y > 1350 && (y = 1350)) ) ;//none if( (x < 27 && (x = 27)) || (x > 2158 && (x =2158)) ) ;//none break; //鼠标滑轮事件 case WM_MOUSEWHEEL: if( ((short)HIWORD(wParam) )> 0 ) //滑轮向上滚 (这个short强制转换非常重要，不然出问题) { y -= 20; if( y < 27 ) y = 27; } else //滑轮向下滚 { y += 20; if(y>1350) y=1350; } break; //键盘消息处理 case WM_KEYDOWN: switch (wParam) { case VK_UP: //龄 y -= 20; if( y < 27 ) y = 27; break; case VK_DOWN: //龄 y += 20; if(y>1350) y=1350; break; case VK_LEFT: //オ龄 x -= 20; if( x < 27 ) x = 27; break; case VK_RIGHT: //龄 x += 20; if( x > 2158) x = 2158; break; } break; //销毁窗体及退出程序 case WM_DESTROY: DeleteDC(mdc); DeleteObject(map); ReleaseDC(hWnd,hdc); PostQuitMessage(0); //退出程序 break; //其它消息默认处理 default: return DefWindowProc(hWnd, message, wParam, lParam); } return 0;}
警告:
如果用VC6(用VS2010没有次编译错误)编译可能出现：WM_MOUCEWHEEL没有定义的错误提示。解决方法：添加如下宏定义
#define WM_MOUSEWHEEL 0x020A（编译通过）
有的网友说添加：#define _WIN32_WINNT 0x0400 可以解决，但是我尝试后没有解决这个问题，但是上面方案可以解决。