为何程序编译通过而连接会出错!!!!!!!!!!!!!!!!!
刚学习vc,照着书上的例题写了一下,但是编译通过而连接会出错,请问一下是不是vc6.0的设置那里有问题。程序如下:
#include<windows.h>
#include<string.h>
#include<stdlib.h>
#include<stdio.h>
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInst,LPSTR lpszCmdLine,int
nCmdShow)
{
HWND hwnd;
MSG Msg;
WNDCLASS wndclass;
char lpszClassName[]="»ù±¾»æÍ¼";
char lpszTitle[]="My_Drawing";
wndclass.style=0;
wndclass.lpfnWndProc=WndProc;
wndclass.cbClsExtra=0;
wndclass.cbWndExtra=0;
wndclass.hInstance=hInstance;
wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
wndclass.hCursor=LoadCursor(NULL,IDC_ARROW);
wndclass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
wndclass.lpszMenuName=NULL;
wndclass.lpszClassName=lpszClassName;
if(!RegisterClass(&wndclass))
{
MessageBeep(0);
return FALSE;
}
hwnd=CreateWindow(
lpszClassName,
lpszTitle,
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hInstance,
NULL);
ShowWindow(hwnd,nCmdShow);
UpdateWindow(hwnd);
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;
HPEN hP;
HBRUSH hB;
switch(message)
{
case WM_PAINT:
hP=CreatePen(PS_DASHDOT,1,RGB(0,255,0));
hB=CreateHatchBrush(HS_CROSS,RGB(255,0,0));
hdc=BeginPaint(hwnd,&ps);
SetMapMode(hdc,MM_TEXT);
Rectangle(hdc,130,60,270,200);
SelectObject(hdc,hB);
Ellipse(hdc,130,70,270,190);
SelectObject(hdc,hP);
MoveToEx(hdc,100,130,NULL);
LineTo(hdc,300,130);
MoveToEx(hdc,200,30,NULL);
LineTo(hdc,200,230);
EndPaint(hwnd,&ps);
DeleteObject(hP);
DeleteObject(hB);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd,message,wParam,lParam);
}
return 0;
}
连接时的错误提示:
Linking...
LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
Debug/book2p99.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.
book2p99.exe - 2 error(s), 0 warning(s)