// CClipboard Class// ----------------// Written by David Terracino <davet@lycosemail.com>//// This code is released into the public domain, because// it's silly easy. If you want to use and expand it, go// ahead; fine by me. If you do expand this class's// functionality, please consider sending it back up to// the MFC Programmer's Sourcebook at www.codeguru.com.//// And as always, please give credit where credit is// due. Don't remove my name from the source.#include "stdafx.h"#include "Clipboard.h"////////////////////////////////////////////////////////////////////// GetText// - Retrieves text from the clipboard//////////////////////////////////////////////////////////////////////// Parameters://	lpszBuffer - pointer to a string where the text is to be put//	nBufSize   - allocated length of lpszBuffer//	hWnd       - window handle to be used by clipboard//// Return Values://	TRUE       - Text was successfully copied from clipboard//	FALSE      - No text on the clipboard//////////////////////////////////////////////////////////////////////BOOL CClipboard::GetText (LPSTR lpszBuffer, int nBufSize, HWND hWnd){	HGLOBAL hGlobal;		// Global memory handle	LPSTR lpszData;			// Pointer to clipboard data	unsigned long nSize;	// Size of clipboard data	// First, open the clipboard. OpenClipboard() takes one	// parameter, the handle of the window that will temporarily	// be it's owner. If NULL is passed, the current process	// is assumed.	OpenClipboard(hWnd);	// Request a pointer to the text on the clipboard.	hGlobal = GetClipboardData(CF_TEXT);	// If there was no text on the clipboard, we have	// been returned a NULL handle.		if (hGlobal == NULL) return FALSE;	// Now we have a global memory handle to the text	// stored on the clipboard. We have to lock this global	// handle so that we have access to it.	lpszData = (LPSTR)GlobalLock(hGlobal);	// Now get the size of the text on the clipboard.	nSize = GlobalSize(hGlobal);	// Make sure the text on the clipboard is not longer	// that the buffer that was allocated for it. If it was	// snip the text on the clipboard so that it fits.	if(nSize >= (UINT)nBufSize) nSize = nBufSize - 1;	// Now, copy the text into the return buffer. At the	// end, we need to add a NULL string terminator.	for (UINT i = 0; i < nSize; ++i)		*(lpszBuffer + i) = *(lpszData + i);	*(lpszBuffer + i) = 0;	// Now, simply unlock the global memory pointer	// and close the clipboard.	GlobalUnlock(hGlobal);	CloseClipboard();	return TRUE;}////////////////////////////////////////////////////////////////////// GetTextLength// - Retrieves length of text on the clipboard//////////////////////////////////////////////////////////////////////// Parameters://	pnSize     - pointer to unsigned long that will receive//               the length of the text on the clipboard.//               NOTE: Does not include NULL terminator.//	hWnd       - window handle to be used by clipboard//// Return Values://	TRUE       - Text length was successfully returned.//	FALSE      - No text on the clipboard//////////////////////////////////////////////////////////////////////BOOL CClipboard::GetTextLength (unsigned long *pnSize, HWND hWnd){	HGLOBAL hGlobal;		// Global memory handle	unsigned long nSize;	// Size of clipboard data	LPSTR lpszData;			// Pointer to clipboard data	// First, open the clipboard. OpenClipboard() takes one	// parameter, the handle of the window that will temporarily	// be it's owner. If NULL is passed, the current process	// is assumed.	OpenClipboard(hWnd);	// Request a pointer to the text on the clipboard.	hGlobal = GetClipboardData(CF_TEXT);	// If there was no text on the clipboard, we have	// been returned a NULL handle.		if (hGlobal == NULL) return FALSE;	// Now we have a global memory handle to the text	// stored on the clipboard. We have to lock this global	// handle so that we have access to it.	lpszData = (LPSTR)GlobalLock(hGlobal);	// Now get the size of the text on the clipboard.	nSize = GlobalSize(hGlobal);	// Now, simply unlock the global memory pointer	// and close the clipboard.	GlobalUnlock(hGlobal);	CloseClipboard();	// Finally, save the length of the string we found	// into the pnSize pointer and return.	*pnSize = nSize;	return TRUE;}////////////////////////////////////////////////////////////////////// SetText// - Places text on the clipboard//////////////////////////////////////////////////////////////////////// Parameters://	lpszBuffer - pointer to a string where the text is to be put//	hWnd       - window handle to be used by clipboard//// Return Values://	TRUE       - Text was successfully copied from clipboard//	FALSE      - No text on the clipboard//////////////////////////////////////////////////////////////////////int CClipboard::SetText (LPSTR lpszBuffer, HWND hWnd){	HGLOBAL hGlobal;		// Global memory handle	LPSTR lpszData;			// Pointer to clipboard data	unsigned long nSize;	// Size of clipboard data	// First, open the clipboard. OpenClipboard() takes one	// parameter, the handle of the window that will temporarily	// be it's owner. If NULL is passed, the current process	// is assumed. After opening, empty the clipboard so we	// can put our text on it.	OpenClipboard(hWnd);	EmptyClipboard();	// Get the size of the string in the buffer that was	// passed into the function, so we know how much global	// memory to allocate for the string.	nSize = lstrlen(lpszBuffer);	// Allocate the memory for the string.	hGlobal = GlobalAlloc(GMEM_ZEROINIT, nSize+1);		// If we got any error during the memory allocation,	// we have been returned a NULL handle.	if (hGlobal == NULL) return FALSE;	// Now we have a global memory handle to the text	// stored on the clipboard. We have to lock this global	// handle so that we have access to it.	lpszData = (LPSTR)GlobalLock(hGlobal);	// Now, copy the text from the buffer into the allocated	// global memory pointer.	for (UINT i = 0; i < nSize + 1; ++i)		*(lpszData + i) = *(lpszBuffer + i);	// Now, simply unlock the global memory pointer,	// set the clipboard data type and pointer,	// and close the clipboard.	GlobalUnlock(hGlobal);	SetClipboardData(CF_TEXT, hGlobal);	CloseClipboard();	return TRUE;}