学生学习在Visual Studio 2019命令行中创建GUI窗口

问题描述

我试图从Windows的命令行创建GUI窗口，尽管我不断收到无法解决的外部错误。我已经通过https://docs.microsoft.com/en-us/dotnet/framework/tools/developer-command-prompt-for-vs来包含链接器目录，如此前进。我也正在使用https://docs.microsoft.com/en-us/cpp/build/building-on-the-command-line?view=vs-2019中的有关如何使用命令行的教程，代码来自此教程https://docs.microsoft.com/en-us/cpp/windows/walkthrough-creating-windows-desktop-applications-cpp?view=vs-2019。我正在查看的特定错误如下：完整链接在以下链接Image of Console Error中：“ simple.obj：错误LNK2019：未解析的外部符号__imp__ShowWindow @ 8在函数_WinMain @ 16中引用”。有人知道我在做什么错误来收到这些错误吗？

// HelloWindowsDesktop.cpp
// compile with: /D_UNICODE /DUNICODE /DWIN32 /D_WINDOWS /c

#include <windows.h>
#include <stdlib.h>
#include <string.h>
#include <tchar.h>

// Global variables

// The main window class name.
static TCHAR szWindowClass[] = _T("DesktopApp");

// The string that appears in the application's title bar.
static TCHAR szTitle[] = _T("Windows Desktop Guided Tour Application");

HINSTANCE hInst;

// Forward declarations of functions included in this code module:
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);

int CALLBACK WinMain(
   _In_ HINSTANCE hInstance,_In_opt_ HINSTANCE hPrevInstance,_In_ LPSTR     lpCmdLine,_In_ int       nCmdShow
)
{
   WNDCLASSEX wcex;

   wcex.cbSize = sizeof(WNDCLASSEX);
   wcex.style          = CS_HREDRAW | CS_VREDRAW;
   wcex.lpfnWndProc    = WndProc;
   wcex.cbClsExtra     = 0;
   wcex.cbWndExtra     = 0;
   wcex.hInstance      = hInstance;
   wcex.hIcon          = LoadIcon(hInstance,IDI_APPLICATION);
   wcex.hCursor        = LoadCursor(NULL,IDC_ARROW);
   wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);
   wcex.lpszMenuName   = NULL;
   wcex.lpszClassName  = szWindowClass;
   wcex.hIconSm        = LoadIcon(wcex.hInstance,IDI_APPLICATION);

   if (!RegisterClassEx(&wcex))
   {
      MessageBox(NULL,_T("Call to RegisterClassEx failed!"),_T("Windows Desktop Guided Tour"),NULL);

      return 1;
   }

   // Store instance handle in our global variable
   hInst = hInstance;

   // The parameters to CreateWindow explained:
   // szWindowClass: the name of the application
   // szTitle: the text that appears in the title bar
   // WS_OVERLAPPEDWINDOW: the type of window to create
   // CW_USEDEFAULT,CW_USEDEFAULT: initial position (x,y)
   // 500,100: initial size (width,length)
   // NULL: the parent of this window
   // NULL: this application does not have a menu bar
   // hInstance: the first parameter from WinMain
   // NULL: not used in this application
   HWND hWnd = CreateWindow(
      szWindowClass,szTitle,WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,500,100,NULL,hInstance,NULL
   );

   if (!hWnd)
   {
      MessageBox(NULL,_T("Call to CreateWindow failed!"),NULL);

      return 1;
   }

   // The parameters to ShowWindow explained:
   // hWnd: the value returned from CreateWindow
   // nCmdShow: the fourth parameter from WinMain
   ShowWindow(hWnd,nCmdShow);
   UpdateWindow(hWnd);

   // Main message loop:
   MSG msg;
   while (GetMessage(&msg,0))
   {
      TranslateMessage(&msg);
      DispatchMessage(&msg);
   }

   return (int) msg.wParam;
}

//  FUNCTION: WndProc(HWND,LPARAM)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_PAINT    - Paint the main window
//  WM_DESTROY  - post a quit message and return
LRESULT CALLBACK WndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam)
{
   PAINTSTRUCT ps;
   HDC hdc;
   TCHAR greeting[] = _T("Hello,Windows desktop!");

   switch (message)
   {
   case WM_PAINT:
      hdc = BeginPaint(hWnd,&ps);

      // Here your application is laid out.
      // For this introduction,we just print out "Hello,Windows desktop!"
      // in the top left corner.
      TextOut(hdc,5,greeting,_tcslen(greeting));
      // End application-specific layout section.

      EndPaint(hWnd,&ps);
      break;
   case WM_DESTROY:
      PostQuitMessage(0);
      break;
   default:
      return DefWindowProc(hWnd,message,wParam,lParam);
      break;
   }

   return 0;
}

解决方法

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