string.cpp

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// String.cpp : Defines the initialization routines for the DLL.
//

#include "stdafx.h"
#include "String.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

//
//	Note!
//
//		If this DLL is dynamically linked against the MFC
//		DLLs, any functions exported from this DLL which
//		call into MFC must have the AFX_MANAGE_STATE macro
//		added at the very beginning of the function.
//
//		For example:
//
//		extern "C" BOOL PASCAL EXPORT ExportedFunction()
//		{
//			AFX_MANAGE_STATE(AfxGetStaticModuleState());
//			// normal function body here
//		}
//
//		It is very important that this macro appear in each
//		function, prior to any calls into MFC.  This means that
//		it must appear as the first statement within the 
//		function, even before any object variable declarations
//		as their constructors may generate calls into the MFC
//		DLL.
//
//		Please see MFC Technical Notes 33 and 58 for additional
//		details.
//

/////////////////////////////////////////////////////////////////////////////
// CStringApp

BEGIN_MESSAGE_MAP(CStringApp, CWinApp)
	//{{AFX_MSG_MAP(CStringApp)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code!
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CStringApp construction

CStringApp::CStringApp()
{
	// TODO: add construction code here,
	// Place all significant initialization in InitInstance
}

/////////////////////////////////////////////////////////////////////////////
// The one and only CStringApp object

CStringApp theApp;

////////////////////////////////////////////
// 此函数用于转换小写字符串为大写
UINT TranslateStr(LPVOID pParam)
{
	AFX_MANAGE_STATE(AfxGetStaticModuleState()); // 模式转换

	CWnd * pMainWnd = AfxGetMainWnd(); // 获取主窗口指针

	if (pParam == NULL)
	{ // 如果没有字符串被传入，弹出消息框显示错误
		::MessageBox(pMainWnd->m_hWnd, "参数传递出错。函数结束！",
			                "函数发生错误", MB_OK|MB_ICONERROR);
		return 0; 
	}

	char* pStr=(char*) pParam; // 从字符串第一个字符开始

	while(*pStr) // 使用while循环来转换字符串
	{
		if(*pStr>='a' && *pStr<='z')  // 如果字符为小写字母
			*pStr-=32;  //将小写字母转换成大写字母。

		pStr++;			//指向下一个字符。
	}

	return 0;
}