windows中如何开启一个console来调试信息

- 日理万妓 2022-06-12 01:51 200阅读 0赞

我需要一些Console function 函数,有很多。  
[https://docs.microsoft.com/en-us/windows/console/console-functions][https_docs.microsoft.com_en-us_windows_console_console-functions]

int APIENTRY  _tWinMain(HINSTANCE hInstance,
        HINSTANCE hPrevInstance,
        LPTSTR    lpCmdLine,
        int       nCmdShow){
    
    
        HANDLE console=nullptr;
        if (AllocConsole()) {
    
            console = GetStdHandle(STD_OUTPUT_HANDLE);
        }
        else
            return 0;
    
    
        BOOL MsgResult=MessageBox(nullptr,nullptr,nullptr,MB_OKCANCEL|MB_DEFBUTTON2);
        switch (MsgResult)
        {
        case IDOK: {
    
                   //do something 
                   TCHAR message[] = TEXT("you clicked ok button\n");
                   WriteConsole(console, message, _countof(message), nullptr, nullptr);
                   break;
        }
    
        case IDCANCEL: {
            TCHAR message[] = TEXT("you clicked cancel button\n");
            WriteConsole(console, message, _countof(message), nullptr, nullptr);
            break;
            //do something 
            break;
        }
        default:
            break;
        }
        TCHAR outMessage[] = TEXT("enter any key to end \n");
        WriteConsole(console, outMessage, _countof(outMessage), nullptr, nullptr);
        CloseHandle(console);
    
        console = GetStdHandle(STD_INPUT_HANDLE);
        TCHAR inputMessage[1];
        DWORD count;
        ReadConsole(console, inputMessage, _countof(inputMessage), &count, nullptr);
        CloseHandle(console);
    
        // You can also use the following function to complete
        // system("pause");
    
        return 0;
    
    
    
    }

当然我们还可以使用重定向

#include<Windows.h>
    #include<process.h>
    #include<tchar.h>
    
    #include<iostream>
    long  g_resouse = FALSE;
    
    void thread1(void *) {
    
    
        while (InterlockedExchange(&g_resouse, TRUE) == TRUE)
            Sleep(0);
    
        //访问资源
    
        InterlockedExchange(&g_resouse, false);
    
    
    
    
    }
    void thread2(void *) {
    
        while (InterlockedExchange(&g_resouse, TRUE) == TRUE)
            Sleep(0);
    
        //访问资源
    
        InterlockedExchange(&g_resouse, false);
    
    }
    
    void fun() {
    
    
    
    }
    
    int APIENTRY  _tWinMain(HINSTANCE hInstance,
        HINSTANCE hPrevInstance,
        LPTSTR    lpCmdLine,
        int       nCmdShow){
    
        FILE *outFile;
        FILE *inFile;
        if (AllocConsole()) {
    
            errno_t error1;
            errno_t error2;
    
    
            error1=freopen_s(&outFile,"CONOUT$", "w",stdout);
            error2=freopen_s(&inFile, "CONIN$", "r", stdin);
    
    
            if (error1==0&&error2==0) {
    
                BOOL MsgResult = MessageBox(nullptr, nullptr, nullptr, MB_OKCANCEL | MB_DEFBUTTON2);
                switch (MsgResult)
                {
                case IDOK: {
    
                    //do something 
                    std::wcout << TEXT("you clicked ok button") << std::endl;
    
                    break;
                }
    
                case IDCANCEL: {
                    std::wcout << TEXT("you clicked cancel button") << std::endl;
                    break;
                    //do something 
                    break;
                }
                default:
                    break;
                }
            }
            std::wcout << TEXT("entry any key to end") << std::endl;
            std::wcin.get();
            //system("pause");
            fclose(outFile);
            fclose(inFile);
    
        }
    
        return 0;
    
    
    }

因为freopen再vs中提示不安全，就看看了看安全的freopen\_s。此函数重定向设备并保存再第一个参数中。函数返回值返回0表示一切ok。对于CONIN$,和CONOUT$;只是windows 中保留的的两个路径名，它们用来做控制台的输入(键盘)缓冲区和活动的控制台屏幕输出缓冲区。在使用 GetStdHandle() 时，它的参数选项分别为：STD\_INPUT\_HANDLE，STD\_OUTPUT\_HANDLE 和 STD\_ERROR\_HANDLE。

*  STD\_INPUT\_HANDLE 为标准输入设备，初始时表示控制台输入缓冲区，即 CONIN$ 。
 *  STD\_OUTPUT\_HANDLE 为标准输出设备，初始时表示活动的控制台屏幕输出缓冲区，即 CONOUT$ 。
 *  STD\_ERROR\_HANDLE 为标准错误设备，初始时表示活动的控制台屏幕输出缓冲区，也为 CONOUT$ 。

【参考】  
[http://blog.csdn.net/huiyouyongdeyu2011/article/details/6556168][http_blog.csdn.net_huiyouyongdeyu2011_article_details_6556168]

[https_docs.microsoft.com_en-us_windows_console_console-functions]: https://docs.microsoft.com/en-us/windows/console/console-functions
[http_blog.csdn.net_huiyouyongdeyu2011_article_details_6556168]: http://blog.csdn.net/huiyouyongdeyu2011/article/details/6556168