Function is used to Show/Hide the TaskBar

// CoolUtils.h
#ifndef __COOLUTILS_H
#define __COOLUTILS_H
#include "stdafx.h"
void gShowHideTaskBar(/*in*/BOOL bHide = FALSE);
HMENU gHideMenu(/*in*/CWnd* pWnd);
BOOL gShowMenuBack(/*in*/HMENU hMenu, /*in*/CWnd* pWnd);
#endif
// CoolUtils.cpp
#include "stdafx.h"
#include "CoolUtils.h"
/****************************************************************************
* Function Name : gShowHideTaskBar() *
* Parameters : BOOL bHide (flag to toggle Show/Hide of Taskbar) *
* Return type : void *
* Purpose : Function is used to Show/Hide the TaskBar *
* Author : Ashutosh R. Bhatikar (ARB) *
* Date written : 20th December 2000 *
* Modification History : *
* Date of modification Reason *
* 25th December 2000 Added methods to Show/Hide menu *
****************************************************************************/
void gShowHideTaskBar(BOOL bHide /*=FALSE*/)
{
CRect rectWorkArea = CRect(0,0,0,0);
CRect rectTaskBar = CRect(0,0,0,0);

CWnd* pWnd = CWnd::FindWindow("Shell_TrayWnd", "");
if( bHide )
{
// Code to Hide the System Task Bar
SystemParametersInfo(SPI_GETWORKAREA,
0,
(LPVOID)&rectWorkArea,
0);

if( pWnd )
{
pWnd->GetWindowRect(rectTaskBar);
rectWorkArea.bottom += rectTaskBar.Height();
SystemParametersInfo(SPI_SETWORKAREA,
0,
(LPVOID)&rectWorkArea,
0);
pWnd->ShowWindow(SW_HIDE);
}
}
else
{
// Code to Show the System Task Bar
SystemParametersInfo(SPI_GETWORKAREA,
0,
(LPVOID)&rectWorkArea,
0);
if( pWnd )
{
pWnd->GetWindowRect(rectTaskBar);
rectWorkArea.bottom -= rectTaskBar.Height();
SystemParametersInfo(SPI_SETWORKAREA,
0,
(LPVOID)&rectWorkArea,
0);
pWnd->ShowWindow(SW_SHOW);
}
}
}
/****************************************************************************
* Function Name : gHideMenu() *
* Parameters : CWnd* pWnd (Window associated with the menu) *
* Return type : HMENU *
* Purpose : Function hides the menu associated with pWnd *
* Author : Ashutosh R. Bhatikar (ARB) *
* Date written : 25nd December 2000 *
* Modification History : *
* Date of modification Reason *
****************************************************************************/
HMENU gHideMenu(/*in*/CWnd* pWnd)
{
HMENU hMenu = ::GetMenu(pWnd->GetSafeHwnd());
if (hMenu != NULL)
{
// Invalidate before SetMenu since we are going to replace
// the frame's client area anyway
pWnd->Invalidate();
pWnd->SetMenu(NULL);
if( pWnd->IsKindOf(RUNTIME_CLASS(CFrameWnd)) )
{
CFrameWnd* pFrameWnd = (CFrameWnd*)pWnd;
// avoid any idle menu processing
pFrameWnd->m_nIdleFlags &= ~CFrameWnd::idleMenu;
}
return hMenu;
}
return NULL;
}
/****************************************************************************
* Function Name : gShowMenuBack() *
* Parameters : HMENU hMenu (Handle of the menu which was hidden) *
* CWnd* pWnd (Window associated with the menu) *
* Return type : BOOL *
* Purpose : Function shows back the menu associated with pWnd *
* Author : Ashutosh R. Bhatikar (ARB) *
* Date written : 25nd December 2000 *
* Modification History : *
* Date of modification Reason *
****************************************************************************/
BOOL gShowMenuBack(/*in*/HMENU hMenu, /*in*/CWnd* pWnd)
{
// put the menu back in place if it was removed before
if (hMenu != NULL)
{
// Invalidate before SetMenu since we are going to replace
// the frame's client area anyway
pWnd->Invalidate();
::SetMenu(pWnd->GetSafeHwnd(), hMenu);
return TRUE;
}
return FALSE;
}