我最近在我的“Windows Vista Home Premium”计算机上下载了“Microsoft Visual C++ 2010 Express”版本。我是一名 Java 程序员，正在尝试转向 C++，这非常令人沮丧：
显示输出窗口，
------ Build started: Project: Engine, Configuration: Debug Win32 ------
LINK : fatal error LNK1104: cannot open file 'Debug\Engine.obj'
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
我有时也会收到“LNK1181”错误。问题是编译器找不到这些对象，但如果我没记错的话，编译器应该在编译期间自动生成这些 .obj 文件。我检查了“Debug”文件夹中的“Engine.obj” - 它是一个空文件夹。那么，为什么 Visual C++ 不创建这些 .obj 文件呢？有人可以客观地告诉我为什么 Visual C++ 不会生成这些 .obj 文件吗？
顺便说一句，我有一种预感，这可能与我的系统类型（x32 与 x64）有关。我非常确定我正在基于 x64 的硬件上运行“Windows Vista Home Premium (x32)”。我在使用 Microsoft Silverlight（当然是 Microsoft！）时遇到了问题，它为我提供了错误的 .exe，因为该网站使用我的硬件凭据来确定哪个版本适合我的计算机。 x64 不会安装在我的计算机上，但是当我转到“系统信息”时，“系统类型”下显示“基于 x64 的 PC”。 x32版本后来安装就好了。也许我所使用的 Visual C++ 版本存在兼容性问题？
更新：我尝试安装 x64 版本的 Visual Studio 2010 - 没有任何结果。同样的问题。
引擎.cpp：
// Engine.cpp : Defines the entry point for the application.
//
#include "stdafx.h"
#include "Engine.h"
#define MAX_LOADSTRING 100
// Global Variables:
HINSTANCE hInst; // current instance
TCHAR szTitle[MAX_LOADSTRING]; // The title bar text
TCHAR szWindowClass[MAX_LOADSTRING]; // the main window class name
// Forward declarations of functions included in this code module:
ATOM MyRegisterClass(HINSTANCE hInstance);
BOOL InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM);
int APIENTRY _tWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow)
{
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);
// TODO: Place code here.
MSG msg;
HACCEL hAccelTable;
// Initialize global strings
LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadString(hInstance, IDC_ENGINE, szWindowClass, MAX_LOADSTRING);
MyRegisterClass(hInstance);
// Perform application initialization:
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}
hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_ENGINE));
// Main message loop:
while (GetMessage(&msg, NULL, 0, 0))
{
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return (int) msg.wParam;
}
//
// FUNCTION: MyRegisterClass()
//
// PURPOSE: Registers the window class.
//
// COMMENTS:
//
// This function and its usage are only necessary if you want this code
// to be compatible with Win32 systems prior to the 'RegisterClassEx'
// function that was added to Windows 95. It is important to call this function
// so that the application will get 'well formed' small icons associated
// with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
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, MAKEINTRESOURCE(IDI_ENGINE));
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = MAKEINTRESOURCE(IDC_ENGINE);
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));
return RegisterClassEx(&wcex);
}
//
// FUNCTION: InitInstance(HINSTANCE, int)
//
// PURPOSE: Saves instance handle and creates main window
//
// COMMENTS:
//
// In this function, we save the instance handle in a global variable and
// create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
HWND hWnd;
hInst = hInstance; // Store instance handle in our global variable
hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);
if (!hWnd)
{
return FALSE;
}
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
return TRUE;
}
//
// FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
// PURPOSE: Processes messages for the main window.
//
// WM_COMMAND - process the application menu
// 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)
{
int wmId, wmEvent;
PAINTSTRUCT ps;
HDC hdc;
switch (message)
{
case WM_COMMAND:
wmId = LOWORD(wParam);
wmEvent = HIWORD(wParam);
// Parse the menu selections:
switch (wmId)
{
case IDM_ABOUT:
DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
break;
case IDM_EXIT:
DestroyWindow(hWnd);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
break;
case WM_PAINT:
hdc = BeginPaint(hWnd, &ps);
// TODO: Add any drawing code here...
EndPaint(hWnd, &ps);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
UNREFERENCED_PARAMETER(lParam);
switch (message)
{
case WM_INITDIALOG:
return (INT_PTR)TRUE;
case WM_COMMAND:
if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
{
EndDialog(hDlg, LOWORD(wParam));
return (INT_PTR)TRUE;
}
break;
}
return (INT_PTR)FALSE;
}
引擎日志：
LINK : fatal error LNK1104: cannot open file 'Debug\Engine.obj'
在 Windows 7 x64 上使用 Visual C++ 2010 进行了完全相同的尝试。看起来没问题。
这是 Visual C++ 为 Engine.cpp 生成的内容：
// Engine.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
int _tmain(int argc, _TCHAR* argv[])
{
return 0;
}
这是构建输出：
1>------ Build started: Project: Engine, Configuration: Debug Win32 ------
1>Build started 11/11/2012 2:18:10 PM.
1>PrepareForBuild:
1> Creating directory "c:\users\administrator\documents\visual studio 2010\Projects\Engine\Debug\".
1>InitializeBuildStatus:
1> Creating "Debug\Engine.unsuccessfulbuild" because "AlwaysCreate" was specified.
1>ClCompile:
1> stdafx.cpp
1> Engine.cpp
1>LinkEmbedManifest:
1> Engine.vcxproj -> c:\users\administrator\documents\visual studio 2010\Projects\Engine\Debug\Engine.exe
1>FinalizeBuildStatus:
1> Deleting file "Debug\Engine.unsuccessfulbuild".
1> Touching "Debug\Engine.lastbuildstate".
1>
1>Build succeeded.
1>
1>Time Elapsed 00:00:02.97
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========
转到以下路径
项目 -> 属性 -> c/c++ -> 生成预处理文件
只需将其设置为NO