隐藏windows的Desktop、Taskbar、TaskManager等功能

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作者：用户投稿来源：网络发布时间： 12/10/15

                          *
* (Win 9x)                                                 *
************************************************************/
int Keys_Enable_Disable(BOOL bEnableDisable)
{
    BOOL    bOldState;

return SystemParametersInfo(SPI_SETSCREENSAVERRUNNING, bEnableDisable ? FALSE : TRUE, &bOldState, 0);
}

/***********************************
* Enable/Disable Alt+Tab, Alt+Esc *
* TRUE=Enable, FALSE=Disable      *
* ( Win ?)                        *
***********************************/
int AltTab1_Enable_Disable(BOOL bEnableDisable)
{
    BOOL    bOldState;

return SystemParametersInfo(SPI_SETFASTTASKSWITCH, bEnableDisable ? FALSE : TRUE, &bOldState, 0);
// return SystemParametersInfo(SPI_SETSWITCHTASKDISABLE, bEnableDisable ? FALSE : TRUE, &bOldState, 0);
}

/***********************************
* Enable/Disable Alt+Tab, Alt+Esc *
* TRUE=Enable, FALSE=Disable      *
* (Win 2K)                        *
***********************************/
int AltTab2_Enable_Disable(HWND hWnd, BOOL bEnableDisable)
{
    #define m_nHotKeyID 100

    if (!bEnableDisable)
{
  if (!RegisterHotKey(hWnd, m_nHotKeyID+0, MOD_ALT, VK_TAB))  // Alt+Tab
   return 0;
        if (!RegisterHotKey(hWnd, m_nHotKeyID+1, MOD_ALT, VK_ESCAPE)) // Alt+Esc
   return 0;
    }
else
{
        if (!UnregisterHotKey(hWnd, m_nHotKeyID+0))
   return 0;
        if (!UnregisterHotKey(hWnd, m_nHotKeyID+1))
   return 0;
}
return 1;
}

/*****************************************************
* Enable/Disable task switching keys.               *
* (Alt+Tab, Alt+Esc, Ctrl+Esc, Win, Ctrl+Shift+Esc) *
* TRUE=Enable, FALSE=Disable                        *
* (Win NT4SP3+, Win2K).