我是初学者，遇到了问题请帮忙！

shgciom 2002-03-22 09:48:57

程序是最简单的helloword程序，我就使用的csdn的首页上的文档的No MFC Only API里面的例子；以前自己也敲进去一个但是出现同样的错误:

Linking...
LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
Debug/demo1.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

demo1.exe - 2 error(s), 0 warning(s)

我实在找不出怎么解决！所以专程请教！

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shgciom 2002-04-16

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问题还没解决！
RegisterClassEx(&winclass);
一句返回为0;
不知道怎么回事？

shgciom 2002-03-22

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cxiaobao(风子) :同样还是不显示窗口！？？？

cxiaobao 2002-03-22

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看看你这里：
while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
return (msg.wParam);
^^^^^^^^-^^^^^^^^^^^^
|---------------->程序运行一下子就结束了。
}
改为：
while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return (msg.wParam);

shgciom 2002-03-22

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我为什么生成不了窗口？

shgciom 2002-03-22

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iamknight(侠客) ：link里面已经是了！

kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /incremental:yes /pdb:"Debug/DEMO2_1.pdb" /debug /machine:I386 /out:"Debug/DEMO2_1.exe" /pdbtype:sept

shgciom 2002-03-22

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zjp009(高手) ：我用WIZARD生成一个，调试的时候发现if(!hWnd)一句返回的为0，我前面的程序就使返回1，不知道怎么回事！

iamknight 2002-03-22

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工程设置不对。

project ->setting :

link->project options
修改
/subsystem:console 为 /subsystem:windows

shgciom 2002-03-22

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现在不显示错了，就是不出现窗口！

iamknight 2002-03-22

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把主函数改为 void main()

shgciom 2002-03-22

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#define WIN32_LEAN_AND_MEAN

#include <windows.h>
#include <windowsx.h>
#include <windows.h>
//#include <stdafx.h>
#include <stdio.h>
#include <math.h>

#define WINDOW_CLASS_NAME "WINCLASS1"
//globals

//functions
//--------------------
LRESULT CALLBACK WindowProc(HWND hwnd,
UINT msg,
WPARAM wparam,
LPARAM lparam)
{

//系统信息句柄
PAINTSTRUCT ps;
HDC hdc;
//What is the message?
switch(msg)
{
case WM_CREATE:
{
return(0);
}break;
case WM_PAINT:
{
hdc=BeginPaint(hwnd,&ps);

EndPaint(hwnd,&ps);
return(0);
}break;
case WM_DESTROY:
{
PostQuitMessage(0);

return(0);
}break;
default :{
return (0);
//return RegisterClassEx(&winclass);
//return hwnd;
return DefWindowProc(hwnd, msg, wparam, lparam);
}break;
}
}
//--------------------
//winmain函数

int WINAPI WinMain(HINSTANCE hinstance,
HINSTANCE hprevinstance,
LPSTR lpcmdline,
int ncmdshow)
{
//定义WNDCLASSEX类对象；
WNDCLASSEX winclass;
//定义窗口句柄
HWND hwnd;
//定义消息
MSG msg;

winclass.cbSize=sizeof(WNDCLASSEX);
winclass.style=CS_DBLCLKS|CS_OWNDC|CS_HREDRAW|CS_VREDRAW;
//winclass.style=CS_HREDRAW | CS_VREDRAW;
winclass.lpfnWndProc=WindowProc;
winclass.cbClsExtra=0;
winclass.cbWndExtra=0;
winclass.hInstance=hinstance;
winclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
winclass.hCursor=LoadCursor(NULL,IDC_ARROW);
winclass.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
//winclass.hbrBackground=GetStockObject(BLACK_BRUSH);
winclass.lpszMenuName=NULL;
winclass.lpszClassName=WINDOW_CLASS_NAME;
winclass.hIconSm=LoadIcon(NULL,IDI_APPLICATION);

RegisterClassEx(&winclass);
if(!RegisterClassEx(&winclass))
return(0);

//if(!(hwnd=

// MessageBox(NULL,"there can be only one!!",
// "my first windwos program",
// MB_OK|MB_ICONEXCLAMATION);
// return(0);
//creat the window
// TCHAR szWindowClass[MAX_LOADSTRING];

hwnd=CreateWindowEx(0,//NULL,
//NDOW_CLASS_NAME,
"WINCLASS",
"your basic windwo",
WS_OVERLAPPEDWINDOW,//WS_OVERLAPPEDWINDOW|WS_VISIBLE,
50,50,//x,y
400,400,//width,high
NULL,
NULL,
hinstance,
//winclass,
NULL);
ShowWindow(hwnd,ncmdshow);
UpdateWindow(hwnd);
if(!hwnd)
{
//ShowWindow(hwnd,ncmdshow);
return (0);
}
while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
return (msg.wParam);
}
return (0);
}
谢谢！

dancetime 2002-03-22