场景:

1. 有时候须要构造命令行字符串传递給函数调用，比方CreateProcess,假设參数是动态的，那么就得使用类似std::vector<string>加入单个參数，之后拼接为一个string.

wx有给这类处理类。就是wxCmdLineParser ，它既能拼接为字符串。又能够把字符串分解为一个參数数组。

console.cpp

#include "wx/wxprec.h"

#ifndef WX_PRECOMP

    #include "wx/wx.h"

#endif

#include "wx/cmdline.h"

#include "wx/app.h"

#include <assert.h>

#include <iostream>

#include <stdio.h>

using namespace std;

void TestParseCmdLine()

{

	cout << "TestParseCmdLine" << endl;

	wxString cmd("gcc -c -o test.exe test.cpp");

	//1.解析字符串

	wxCmdLineParser parser;

	//parser.SetCmdLine(0,(char**)NULL);

	wxArrayString arr = parser.ConvertStringToArgs(cmd);

	for(int i = 0; i < arr.size(); ++i)

	{

		cout << arr[i] << endl;

	}

	//2.生成字符串

	parser.AddParam(wxT("gcc"));

	parser.AddParam(wxT("-c"));

	parser.AddParam(wxT("-o"));

	parser.AddParam(wxT("test.exe"));

	parser.AddParam(wxT("test.cpp"));

	//parser.Reset();

	//parser.Parse();

	cout << "parser.GetParamCount(): " << parser.GetParamCount() << endl;

	for(int i = 0; i < parser.GetParamCount(); ++i)

	{

		cout << parser.GetParam(i) << endl;

	}

	cout << "argv: " << wxTheApp->GetAppName() << endl;

	wxString str = parser.GetUsageString();

	wxString appName = wxTheApp->GetAppName();

	cout << "parser: " << str.Mid(str.Find(wxTheApp->GetAppName())+appName.Length()+1) << endl;

}

int main(int argc,char* argv[])

{

	wxInitialize();

	wxEntryStart(argc,argv);

	wxInitAllImageHandlers();

	TestParseCmdLine();

	wxEntryCleanup();

	wxUninitialize();

	return 0;

}

输出:

TestParseCmdLine

gcc

-c

-o

test.exe

test.cpp

parser.GetParamCount(): 0

argv: test_wxCmdLineParser

parser: gcc -c -o test.exe test.cpp