C / C++ / MFC

// ** just a dummy function to illustrate, this should 
// ** be called in response to a button -err, somethin
void COurProgram::OnCommandsHelp() {

	// ** set up a buffer to hold our current directory
	TCHAR szBuffer[MAX_PATH];
	// ** get the current directory
	GetCurrentDirectory(MAX_PATH, szBuffer);

	// ** set a string to the current directory plus
	// ** our help file 'help.html'
	CString strHelp;
	strHelp.Format("%s\\help.html", szBuffer);

	// ** set up the shell execute info
	SHELLEXECUTEINFO ShExecInfo = { 0 };
	ShExecInfo.cbSize = sizeof( SHELLEXECUTEINFO );
	ShExecInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
	ShExecInfo.hwnd = NULL;
	ShExecInfo.lpVerb = "open";				// ** set to 'open' the file
	ShExecInfo.lpFile = strHelpFile;		// ** our file
	ShExecInfo.lpParameters = NULL;
	ShExecInfo.lpDirectory = NULL;
	ShExecInfo.nShow = SW_SHOWMAXIMIZED;	// ** set to show maximized
	ShExecInfo.hInstApp = NULL;

	// ** open the file maximized and keep a handle to it
	HINSTANCE h = ShellExecute(NULL, "open", strHelpFile, NULL, NULL, SW_SHOWMAXIMIZED);

	// ** check to see if the file was opened correctly
    if ((UINT)h > 32) {
	    // ** our process opend correctly, no worries
	    //.. other code you may want to process

    } else {
	    // ** the file wasn't opened so show an error message
	    // AfxMessageBox("Some Message");
	}

}
</code>

char szSomeString[] = "This is a string\0";
char szXORString[] = "String\0";
char szEncString[ 100 ];

for( i = 0; i < strlen( szSomeString ); i++ )
{
    szEncString[ i ] = szSomeString[ i ]; 
    for( j = 0; j < strlen( szXORString ); j++ )
         szEncString[ i ] ^= szXORString[ j ];
}
szEncString[ i ] = '\0';

void CMainFrame::OnDestroy() 
{
	WINDOWPLACEMENT wndPlace;
	if ( GetWindowPlacement( &wndPlace ) )
	{
		AfxGetApp()->WriteProfileInt( "WndPos", "Left", wndPlace.rcNormalPosition.left );
		AfxGetApp()->WriteProfileInt( "WndPos", "Top", wndPlace.rcNormalPosition.top );
		AfxGetApp()->WriteProfileInt( "WndPos", "Right", wndPlace.rcNormalPosition.right );
		AfxGetApp()->WriteProfileInt( "WndPos", "Bottom", wndPlace.rcNormalPosition.bottom );
		AfxGetApp()->WriteProfileInt( "WndPos", "Max", wndPlace.showCmd == SW_SHOWMAXIMIZED );
	}

	CFrameWnd::OnDestroy();
}
 
void CMainFrame::ActivateFrame(int nCmdShow) 
{
	CRect r;

	r.top = AfxGetApp()->GetProfileInt( "WndPos", "Top", 0 );
	r.left = AfxGetApp()->GetProfileInt( "WndPos", "Left", 0 );
	r.bottom = AfxGetApp()->GetProfileInt( "WndPos", "Bottom", 400 );
	r.right = AfxGetApp()->GetProfileInt( "WndPos", "Right", 600 );
	MoveWindow( r );

	if ( AfxGetApp()->GetProfileInt( "WndPos", "Max", -1 ) == -1 )
	{
		CenterWindow();
		nCmdShow = SW_MAXIMIZE;
	}

	if ( AfxGetApp()->GetProfileInt( "WndPos", "Max", 0 ) == 1 )
		nCmdShow = SW_MAXIMIZE;
	
	CFrameWnd::ActivateFrame(nCmdShow);
}

#include <multimon.h>

        if ( WinPlatform() & ( WIN_98 | WIN_NT5 )
          && GetSystemMetrics( SM_CMONITORS ) > 1    // if > one monitor.
           )
        {
            // SM_CXVIRTUALSCREEN, SM_CYVIRTUALSCREEN  are the width and height,
            // in pixels, of the virtual screen.
            // SM_XVIRTUALSCREEN, SM_YVIRTUALSCREEN metrics are the coordinates
            // of the top left corner of the virtual screen.
            // The virtual screen is the bounding rectangle of all display monitors.
            // See also: SM_CMONITORS, SM_SAMEDISPLAYFORMAT.
            pRect->top    = GetSystemMetrics( SM_YVIRTUALSCREEN );
            pRect->left   = GetSystemMetrics( SM_XVIRTUALSCREEN );
            pRect->right  = GetSystemMetrics( SM_CXVIRTUALSCREEN ) + pRect->left;
            pRect->bottom = GetSystemMetrics( SM_CYVIRTUALSCREEN ) + pRect->top;
        }