一个windows应用
程序代码：#include<windows.h>
#include<stdio.h>
HINSTANCE hInst;
HWND hWndMain;
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInst,PSTR lpszCmdLine,int nCmdShow)
{MSG msg;
WNDCLASS wnd;
wnd.style=CS_HREDRAW |CS_VREDRAW;
wnd.cbClsExtra = 0;
wnd.cbWndExtra = 0;
wnd.hbrBackground = (HBRUSH)::GetStockObject(WHITE_BRUSH);
wnd.hCursor = ::LoadCursor(NULL,IDC_ARROW);
wnd.hIcon = ::LoadIcon(NULL,IDI_APPLICATION);
wnd.hInstance = hInstance;
wnd.lpfnWndProc = WndProc;
wnd.lpszClassName="generic";
wnd.lpszMenuName = NULL;
if (!RegisterClass(&wnd))
{ return FALSE;
}
hWndMain = CreateWindow("generic","简单的窗口演示程序",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,
NULL,NULL,hInstance,NULL);
ShowWindow(hWndMain,nCmdShow);
UpdateWindow(hWndMain);
while(GetMessage(&msg,NULL,0,0))
{ TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
LRESULT CALLBACK WndProc (HWND hwnd,UINT message,WPARAM wParam, LPARAM lParam)
{HDC hdc;
PAINTSTRUCT ps;
char *hello = "这是一个Windows模块程序!";
char Buffer[256];
int x,y;
switch(message)
{
case WM_PAINT:
hdc = BeginPaint(hwnd,&ps);
TextOut(hdc,20,10,hello,lstrlen(hello));
EndPaint(hwnd,&ps);
break;
case WM_CHAR:
hdc = GetDC(hwnd);
sprintf(Buffer," ");
TextOut(hdc,0,0,Buffer,strlen(Buffer));
sprintf(Buffer,"%c",wParam);
TextOut(hdc,0,0,Buffer,strlen(Buffer));
ReleaseDC(hwnd,hdc);
break;
case WM_LBUTTONDOWN:
hdc = GetDC(hwnd);
x = LOWORD(lParam);
y = HIWORD(lParam);
Ellipse(hdc,x-10,y-10,x+10,y+10);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return(DefWindowProc(hwnd,message,wParam,lParam));
}
return(0);
}编译没问题，但是运行时总是出错：程序代码：--------------------Configuration: generic - Win32 Debug-------------------- Linking... LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main Debug/generic.exe : fatal error LNK1120: 1 unresolved externals 执行 link.exe 时出错. generic.exe - 1 error(s), 0 warning(s)谁能告诉我这个问题出在哪？有没有类似其他的出错信息，一起告诉我
