C / C++ / MFC

Polite Programmer wrote:

between the lines, we are just calling string manipulation functions like strlen, strcpy etc.

Polite Programmer wrote:

I get NULL in responce to call of new operator.

<br />
#include <windows.h><br />
#include <tchar.h><br />
#include <stdio.h><br />
<br />
#include "resource.h"<br />
<br />
#include "convert.h"<br />
<br />
HWND hwndNextClipboardVierwer ;<br />
char * szInPageData ;<br />
HFONT hFont ;<br />
<br />
// Processes the conversion<br />
/*<br />
void ProcessConversion(HWND hDlg)<br />
{<br />
	TCHAR * pInPageText = NULL ;<br />
	TCHAR * pUnicodeText = NULL ;<br />
	HWND hwndInPageText = GetDlgItem(hDlg, IDC_EDIT_INPAGE) ;<br />
	HWND hwndUnicodeText = GetDlgItem(hDlg, IDC_EDIT_UNICODE) ;<br />
<br />
	int iLen = GetWindowTextLength(hwndInPageText) ;<br />
<br />
	if(iLen <=0) return ;<br />
<br />
	pInPageText = new TCHAR[iLen + 1] ;<br />
<br />
	GetWindowText(hwndInPageText, pInPageText, iLen) ;<br />
<br />
	pUnicodeText = ConvertInPageToUncode(pInPageText, iLen) ;<br />
	<br />
	SetWindowText(hwndUnicodeText, pUnicodeText) ;<br />
<br />
<br />
	if(pInPageText != NULL)delete []pInPageText ;<br />
	if(pUnicodeText != NULL) delete []pUnicodeText ;<br />
<br />
}<br />
*/<br />
<br />
<br />
void DumpHex(TCHAR * szText, HWND hDlg)<br />
{<br />
	int iLen = _tcsclen(szText) ;<br />
	TCHAR szBuffer[10] ;<br />
<br />
	/*NOTE: This call fails i.e. returns NULL (even iLen is > 0)*/<br />
	TCHAR * szHexDump = new TCHAR[iLen * 7] ;<br />
<br />
	ZeroMemory(szHexDump, iLen * 7) ;<br />
<br />
	for(int i = 0 ; i < iLen ; i++)<br />
	{<br />
		wsprintf(szBuffer, _T("0x%X, "), szText[i]) ;<br />
		_tcscat(szHexDump, szBuffer) ;<br />
	}<br />
<br />
	SetDlgItemText(hDlg, IDC_EDIT_UNIHEX, szHexDump) ;<br />
<br />
	/*NOTE: This Call generates Heap corruption message from CRT*/<br />
	delete [] szHexDump ;<br />
}<br />
<br />
BOOL CALLBACK DlgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)<br />
{<br />
	HANDLE hMemory = NULL;<br />
	TCHAR * szUnicodeText = NULL ;<br />
	char * lptstr = NULL ;<br />
	int iLen = NULL ;<br />
<br />
	switch(msg)<br />
	{<br />
	case WM_INITDIALOG:<br />
		<br />
		hwndNextClipboardVierwer = SetClipboardViewer(hWnd) ;<br />
		hFont = CreateFont( 80,<br />
							80,<br />
							0,<br />
							0,<br />
							0,<br />
							0,<br />
							0,<br />
							0,<br />
							0,<br />
							0,<br />
							0,<br />
							0,<br />
							0,<br />
							_T("Pak Nastaleeq")) ;<br />
		SendDlgItemMessage(hWnd, IDC_EDIT_UNICODE, WM_SETFONT, (WPARAM) hFont, TRUE) ;<br />
		return FALSE ;<br />
<br />
	// Handle the change of the clipboard.<br />
	case WM_DRAWCLIPBOARD:<br />
<br />
		if(OpenClipboard(hWnd))<br />
		{<br />
			hMemory = GetClipboardData(CF_TEXT) ;<br />
			lptstr = (char *) GlobalLock(hMemory) ;<br />
<br />
			if(hMemory == NULL || lptstr == NULL)<br />
			{<br />
				CloseClipboard() ;<br />
				return FALSE ;<br />
			}<br />
<br />
			iLen = strlen(lptstr) ;<br />
			szInPageData = new char[iLen + 1] ;<br />
			szUnicodeText = new TCHAR[(iLen / 2) + (iLen / 100) * 10] ;<br />
			strcpy(szInPageData, lptstr) ;<br />
			GlobalUnlock(hMemory) ;<br />
<br />
			SendMessage(hwndNextClipboardVierwer, msg, wParam, lParam) ;<br />
			ConvertInPageToUncode(szInPageData, iLen, szUnicodeText) ;<br />
			DumpHex(szUnicodeText, hWnd) ;<br />
			SetDlgItemText(hWnd, IDC_EDIT_UNICODE, szUnicodeText) ;<br />
<br />
			delete [] szInPageData ;<br />
			/*NOTE: Only this delete statement generates Heap corruption message from CRT*/<br />
			delete [] szUnicodeText ;<br />
<br />
			<br />
		}<br />
		<br />
<br />
		return TRUE ;<br />
<br />
	// Control Nofications<br />
	case WM_COMMAND:<br />
		switch(LOWORD(wParam))<br />
		{<br />
		case IDOK:<br />
			//ProcessConversion(hWnd) ;<br />
			EndDialog(hWnd, 1) ;<br />
			break ;<br />
		case IDCANCEL:<br />
			EndDialog(hWnd, 0) ;<br />
			break ;<br />
		<br />
		}<br />
		return TRUE ;<br />
<br />
	case WM_DESTROY:<br />
		ChangeClipboardChain(hWnd, hwndNextClipboardVierwer) ;<br />
		return TRUE ;<br />
	}<br />
<br />
	return FALSE ;<br />
}<br />
<br />
int WINAPI _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,<br />
				   LPTSTR lpCmdLine, int nCmdShow)<br />
{<br />
	DialogBox(hInstance, MAKEINTRESOURCE(IDD_DIALOG1), NULL, DlgProc) ;<br />
	return 0 ;<br />
}

Polite Programmer wrote:

void DumpHex(TCHAR * szText, HWND hDlg)
{
int iLen = _tcsclen(szText) ;
TCHAR szBuffer[10] ;

/*NOTE: This call fails i.e. returns NULL (even iLen is > 0)*/
TCHAR * szHexDump = new TCHAR[iLen * 7] ;

ZeroMemory(szHexDump, iLen * 7) ;

for(int i = 0 ; i < iLen ; i++)
{
wsprintf(szBuffer, _T("0x%X, "), szText[i]) ;
_tcscat(szHexDump, szBuffer) ;
}

/*NOTE: This Call generates Heap corruption message from CRT*/
delete [] szHexDump ;
}

<br />
#if defined _UNICODE<br />
#define TCHAR WCHAR<br />
#else<br />
#define TCHAR CHAR<br />
#enif<br />

<br />
if(OpenClipboard())<br />
{<br />
	HANDLE hMemory = GetClipboardData(CF_TEXT) ;<br />
	TCHAR *lptstr = (TCHAR*) GlobalLock(hMemory) ;<br />
<br />
	if(hMemory == NULL || lptstr == NULL)<br />
	{<br />
		CloseClipboard() ;<br />
	}<br />
<br />
	int iLen = _tcslen(lptstr) ;<br />
	TCHAR *szInPageData = new TCHAR[iLen + 1] ;<br />
	_tcscpy(szInPageData, lptstr) ;<br />
	USES_CONVERSION;<br />
	LPWSTR szUnicodeText = T2W(szInPageData);<br />
	GlobalUnlock(hMemory) ;<br />
<br />
	::SendMessage( hNextViewer, WM_DRAWCLIPBOARD, 0, 0 ) ;<br />
	//ConvertInPageToUncode(szInPageData, iLen, szUnicodeText) ;<br />
	DumpHex( W2T(szUnicodeText), GetSafeHwnd()) ;<br />
	//SetDlgItemText(hWnd, IDC_EDIT_UNICODE, szUnicodeText) ;<br />
<br />
	delete [] szInPageData ;<br />
}<br />

Polite Programmer wrote:

//... Some Code

yijia_24 wrote:

What should I do to see my previous value in PageA when I came back from PageB?

yijia_24 wrote:

I solved that problem.

yijia_24 wrote:

Would you tell me more detail about onSetActive()?

zareee wrote:

reply immediately,

zareee wrote:

how to use this default library of borlands c++ in vc++???