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c++ - 坚持让 Windows.h 工作，在编译之前没有错误消息。

转载 作者：行者123 更新时间：2023-11-28 02:04:46 27 4
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所以我目前一直在尝试让 Windows api 显示出来(语言是 c++)，当我尝试运行该程序时出现以下错误。 (虽然我现在收到关于红色下划线的错误)。我目前使用 visual studio community 作为我的 IDE。

“函数“int _cdel invoke(main(void))”中未解析的外部符号_main 引用

“1 个已解决的外部问题”

我已经在线检查过，并尝试将其作为 win 32 控制台程序和 win 32 项目(有些已将其列为解决该程序的方法。)但是没有结果。我不知道错误可能是什么。 (同样作为引用，我使用以下教程作为起始基础 https://www.youtube.com/watch?v=012pFrYE5_k，但我没有使用开放式 GL 库，因为我想要完成的只是制作一个非常简化的 win32 窗口模板)。有什么想法吗？

代码:main.h

#pragma once
#pragma once
#include<Windows.h>
#include<tchar.h>
#include<iostream>
#define WINDOW_WIDTH = 800 //remember to leave off the ; at the end of define sets(currently not being used
#define WINDOW_HEIGHT = 600
HWND hWnd;

代码:main.cpp

#include "main.h" //remember <> means library, "" means within your project. 
// long results, CALL BACK, windows procedure, basically the basics of what to do. UINT (unsigned INT)
LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
    switch (msg) {
    case WM_CREATE:
        break;
    case WM_DESTROY:
    case WM_QUIT:
    case WM_CLOSE:
        PostQuitMessage(0);
        break;
    }
    return DefWindowProc(hWnd, msg, wParam, lParam);
}
/*
remember that this is a run time instance, and is in essence the same as Main (char[args]) {}
returning 0 ends the operation of the win32 library.
*/
int WINAPI winMain(HINSTANCE hInstance, HINSTANCE hPrevious, LPSTR lpCmdLine, int nCmdShow)
{
    WNDCLASS wc; //default instance for the scope of the window (new window named WC for WINDOW CLASS)
    MSG msg;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hbrBackground = (HBRUSH)GetStockObject(LTGRAY_BRUSH); //default background color, set to stock light gray
    wc.hCursor = LoadCursor(hInstance, IDC_ARROW); //default cursor
    wc.hInstance = hInstance;
    wc.lpfnWndProc = WndProc;
    wc.lpszClassName = _T("NAME");
    wc.lpszMenuName = NULL;
    wc.style = CS_VREDRAW | CS_HREDRAW;  //windows style in bit form, 0X00 hex if you were to print them
    if (!RegisterClass(&wc)) //pointer the to the window, if it doesn't exist call this simple error handle
    {
        MessageBox(NULL, _T("error: cannot reg window class"), _T("error"), MB_OK);
        return 0; // kills 
    }
    hWnd = CreateWindow(L"NAME", //reference of the object already defined as wc
        L"Window Title", //title
        WS_OVERLAPPEDWINDOW, //basic window style
        0, //x start,
        0, //y start,
        800,
        600,       //set all the dimensions to default value
        NULL,                //no parent window
        NULL,                //no menu
        hInstance,
        NULL);
    if (!hWnd)
    {
        MessageBox(NULL, L"ERROR: cannot create window", L"ERROR!", MB_OK);
        return 0;
    }
    while (1)
    {
        while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE)) {
            if (GetMessage(&msg, NULL, 0, 0))
            {
                break;
            }
        }
        DispatchMessage(&msg);
        TranslateMessage(&msg);
    }
    return(int)msg.wParam;
}

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