GoFiler Legato Script Reference   Legato v 1.5b Application v 5.24b

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Chapter Four — Flow Control (continued)

CreateProcessAsElevated Function

Overview

The CreateProcessAsElevated function creates a new process in the primary thread that runs a requested program to be run in an elevated state. This function returns immediately.

Syntax/Parameters

Syntax

handle = CreateProcessAsElevated ( string name, [string parameters], [int showmode] );

Parameters

name

A string containing the name of the program to run. This should generally be a qualified name and path referencing an executable (“exe”) file.

parameters

An optional string that specifies the parameters to be passed to the called program. The parameters and their syntax are dependent on the receiving application. For many applications, placing a filename as a parameter will cause the target program to open and process that file. Note that most applications will treat unquoted text with spaces as multiple parameters and therefore the parameters must be appropriately prepared.

showmode

An optional int specifying the requested mode to show the called application, assuming it is a window. These flags match those in the Windows SDK; for more information, see MSDN. The default is SW_RESTORE.

SW_HIDE

Hides the window and activates another window.

SW_MAXIMIZE

Maximizes the specified window.

SW_MINIMIZE

Minimizes the specified window and activates the next top-level window in the z-order.

SW_RESTORE

Activates and displays the window. If the window is minimized or maximized, Windows restores it to its original size and position. An application should specify this flag when restoring a minimized window.

SW_SHOW

Activates the window and displays it in its current size and position.

SW_SHOWDEFAULT

Sets the show state based on the SW_ flag specified in the startup info structure passed to the CreateProcess‡ function by the program that started the application. An application should call ShowWindow‡ with this flag to set the initial show state of its main window.

SW_SHOWMAXIMIZED

Activates the window and displays it as a maximized window.

SW_SHOWMINIMIZED

Activates the window and displays it as a minimized window.

SW_SHOWMINNOACTIVE

Displays the window as a minimized window. The currently active window remains active.

SW_SHOWNA

Displays the window in its current state. The currently active window remains active.

SW_SHOWNOACTIVATE

Displays a window in its most recent size and position. The currently active window remains active.

SW_SHOWNORMAL

Activates and displays a window. If the window is minimized or maximized, Windows restores it to its original size and position. An application should specify this flag when displaying the window for the first time.

Note that not all programs process this parameter in the same manner and some override its operation depending on the mode requested. For example, Internet Explorer ignores all modes except SW_HIDE.

Return Value

Returns a handle as a process handle or a NULL_HANDLE on failure. Use the GetLastError and GetLastErrorMessage function to retrieve error information.

Remarks

The CreateProcessAsElevated function differs from RunProgramElevated [or ShellExecute] in that a if allowed to run, the caller receives a handle to the process. To wait for the program to close, use the WaitForObject function with the process handle. The return value of the program can also be retrieved with the GetProcessExitCode function.

Note that this is relayed through the Windows API and certain errors, such as find not found, willbe directly reported to the user. As such, this function added to the program, the caller should be careful to avoid errors messages that cannot be controlled directly.

Related Functions

CallProgram

CreateProcess — Creates a new process and immediately returns with a process handle.

GetProcessExitCode — Retrieves the process return code for a completed process.

RunProgram — Runs another executable (exe) as a separate process and immediately returns.

RunProgramElevated — Runs another executable (exe) as a separate elevated process and immediately returns.

RunScript — Runs an external script in a separate script engine in the current process thread.

WaitForObject — Wait for an object with an optional specified time.

WaitForObjects

WaitForObjects

Platform Support

Go13, Go16, GoFiler Complete, GoFiler Corporate, GoFiler, GoFiler Lite, GoXBRL

Legato IDE, Legato Basic

 

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GoFiler Legato Script Reference — Generated on 10/21/2024

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