VS2019中报错LNK2019 无法解析的外部符号 _main，函数 "int

Question

#include<Windows.h>
#include<iostream>
#include<stdio.h>
#ifdef _UNICODE
#define __T(x) L ## x
#else
#define __T(x) x
#endif
#define _T(x) __T(x)
#define _TEXT __T(x)

LRESULT CALLBACK WinSunProc(
    HWND hwnd,
    UINT uMsg,
    WPARAM wParam,
    LPARAM lParam
);

int WINAPI WinMain(
    _In_ HINSTANCE hInstance,
    _In_opt_ HINSTANCE hPrevInstance,
    _In_ LPSTR lpCmdLine,
    _In_ int nShowCmd
)
{
    WNDCLASS wndcls;
    wndcls.cbClsExtra = 0;
    wndcls.cbWndExtra = 0;
    wndcls.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
    wndcls.hCursor = LoadCursor(NULL, IDC_ARROW);
    wndcls.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wndcls.hInstance = hInstance;
    wndcls.lpfnWndProc = WinSunProc;
    wndcls.lpszClassName = _T("winxin2003");
    wndcls.lpszMenuName = NULL;
    wndcls.style = CS_HREDRAW || CS_VREDRAW;
    RegisterClass(&wndcls);

    HWND hwnd;
    hwnd = CreateWindow(_T("weixin2003"), _T("winxin"), WS_OVERLAPPEDWINDOW, 0, 0, 600, 400, NULL, NULL, hInstance, NULL);

    ShowWindow(hwnd, SW_SHOWNORMAL);
    UpdateWindow(hwnd);

    MSG msg;

    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return 0;
}

LRESULT CALLBACK WinSunProc(
    HWND hwnd,
    UINT uMsg,
    WPARAM wParam,
    LPARAM lParam
)
{
    switch (uMsg)
    {
    case WM_CHAR:
        char szChar[20];
        sprintf_s(szChar, "char is %d", wParam);
        MessageBoxA(hwnd, szChar, "weixin", 0);
        break;
    case WM_LBUTTONDOWN:
        MessageBox(hwnd, _T("mose clicked"), _T("weixin"), 0);
        HDC hdc;
        hdc = GetDC(hwnd);
        TextOut(hdc, 0, 50, _T("天佑中华"), strlen("天佑中华"));
        ReleaseDC(hwnd, hdc);

        break;
    case WM_PAINT:
        HDC hdc1;
        PAINTSTRUCT ps;
        hdc1 = BeginPaint(hwnd, &ps);
        TextOut(hdc1, 0, 0, _T("测试实例一二三四"), strlen("测试实例一二三四"));
        EndPaint(hwnd, &ps);
        break;
    case WM_CLOSE:
        if (IDYES == MessageBox(hwnd, _T("是否真的结束"), _T("weixin"), MB_YESNO))
        {
            DestroyWindow(hwnd);
        }
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hwnd, uMsg, wParam, lParam);
    }
    return 0;
}

错误    LNK2019    无法解析的外部符号 _main，函数 "int __cdecl invoke_main(void)" (?invoke_main@@YAHXZ) 中引用了该符号    ConsoleApplication2    
错误    LNK1120    1 个无法解析的外部命令    
 

Answer 1

看看这个： (6条消息) vs2015报错LNK 2019 怎么解决-CSDN问答