MFC中获取命令行参数的几种方法

不妨假设应用程序名为CmdTest，在命令行输入CmdTest Hello World

方法一:

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CString str = ::GetCommandLine();

ASSERT(0 == str.Compare("CmdTest Hello World"));

方法二:

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ASSERT(3 == __argc);

ASSERT(0 == strcmp(__argv[0],"CmdTest"));

ASSERT(0 == strcmp(__argv[1],"Hello"));

ASSERT(0 == strcmp(__argv[2],"World"));

方法三:

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ASSERT(0 == strcmp("Hello World",AfxGetApp()->m_lpCmdLine));

方法四:

使用MFC中的CCommandLineInfo类。

首先，将下面的代码注释，主要是不要生成对话框。

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CCmdTestDlg dlg;

m_pMainWnd = &dlg;

int nResponse = dlg.DoModal();

if (nResponse == IDOK)

{

// TODO: Place code here to handle when the dialog is

// dismissed with OK

}

else if (nResponse == IDCANCEL)

{

// TODO: Place code here to handle when the dialog is

// dismissed with OK

}

创建CCommandLineInfo的派生类

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//MyCmdLineInfo.h

class CMyCmdLineInfo : public CCommandLineInfo

{

public:

CMyCmdLineInfo();

virtual ~CMyCmdLineInfo();



virtual void ParseParam(const char* pszParam, BOOL bFlag, BOOL bLast);



CStringArray m_arCommd;

};



//MyCmdLineInfo.cpp

CMyCmdLineInfo::CMyCmdLineInfo()

{

m_arCommd.RemoveAll();

}



CMyCmdLineInfo::~CMyCmdLineInfo()

{



}



void CMyCmdLineInfo::ParseParam(const char* pszParam, BOOL bFlag, BOOL bLast)

{

CString str = pszParam;

m_arCommd.Add(str);

}

在CCmdTestApp::InitInstance最后，return FALSE之前加上，注意要#include对应头文件

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CMyCmdLineInfo cmdInfo;

cmdInfo.m_nShellCommand = CCommandLineInfo::FileNothing;

ParseCommandLine(cmdInfo);



ASSERT(2 == cmdInfo.m_arCommd.GetSize());

ASSERT(0 == cmdInfo.m_arCommd[0].Compare("Hello"));

ASSERT(0 == cmdInfo.m_arCommd[1].Compare("World"));