Common commands for vc and vc operations

Common commands for vc and vc operations

1. restart the computer:

ExitWindowsEx (EWX_REBOOT, 0 );

2. Shutdown:

ExitWindowsEx (EWX_SHUTDOWN, 0 );

3. logout:

ExitWindowsEx (EWX_LOGOFF, 0 );

4. screen lock:

LockWorkStation ();

5. Make the current program appear in the application bar:

ModifyStyleEx (WS_EX_APPWINDOW, WS_EX_TOOLWINDOW); // not displayed in the taskbar

6. Minimize programs to pallets;

Related API functions used: BOOL shell_policyicon (DWORD dwMessage, PNOTIFYICONDATA lpdata );

The dwMessage parameter is used to specify the actions of a tray. This is a four-byte value, as shown below:

1) NIM_ADD (0X00000000): Add a System Tray

2) NIM_MODIFY (0X00000001): System Tray Modification

3) NIM_DELETE (0X00000002): Delete the system tray

4) NIM_SETFOCUS (0X00000003): Focus on the system tray

5) NIM_SETVERSION (0X00000004): sets the version of the system tray.

The PNOTIFYICONDATA parameter is a special structure for this service. Its structure is as follows:

Typedef struct _ policyicondata

{

DWORD cbSize; // the size of the struct, in bytes.

HWND hWnd; // handle of this pallet Program

UNIT uID; // The ID allocated by the system for each icon in the tray Area

UNIT uFlags; // In short, it is a identifier

UNIT uCallbackMessage; // callback function. You need to define a message to receive a message that slides over or clicks the mouse.

HICON hIcon; // icon

TCHAR szTip [64]; // size of the prompt text

DWORD dwState; // The status of the icon

DWORD dwStateMask; // similar to the preceding

TCHAR szInfo [256]; // text displayed in the bubble notification

Union

{

UNIT uTimeout;

UNIT uVersion;

}

TCHAR szInfoTitle [64]; // the title of the bubble notification

DWORD dwInfoFlags; // modify the flag related to the bubble notification

GUID guidItem; // The GUID of the icon

HICON hBalloonIcon; // bubble notification icon

} NOTIFYICONDATA, * ppolicyicondata

Eg:

M_tnd.cbSize = sizeof (policyicondata );

M_tnd.hWnd = pWnd-> GetSafeHwnd ();

M_tnk.uID = uID;

M_tnd.hIcon = icon;

M_tnd.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP;

Strcpy (m_tnd.szTip, szToolTip );

// Set the tray icon

Shell_policyicon (NIM_ADD, & m_tnd );