Captures a window

Description

imagegrabwindow(int $handle, bool $client_area = false): GdImage|false

Grabs a window or its client area using a windows handle (HWND property in COM instance)

Note:
This function is only available on Windows.

Parameters

handle: The HWND window ID.
client_area: Include the client area of the application window.

Return Values

Returns an image object on success, false on failure.

Errors/Exceptions

E_NOTICE is issued if handle is invalid window handle. E_WARNING is issued if the Windows API is too old.

Changelog

Version	Description
8.0.0	On success, this function returns a GDImage instance now; previously, a resource was returned.
8.0.0	`client_area` expects a bool now; previously it expected an int.

Examples

Example #1 imagegrabwindow() example

Capture a window (IE for example)


<?php
$browser = new COM("InternetExplorer.Application");
$handle = $browser->HWND;
$browser->Visible = true;
$im = imagegrabwindow($handle);
$browser->Quit();
imagepng($im, "iesnap.png");
imagedestroy($im);
?>

Capture a window (IE for example) but with its content


<?php
$browser = new COM("InternetExplorer.Application");
$handle = $browser->HWND;
$browser->Visible = true;
$browser->Navigate("http://www.libgd.org");

/* Still working? */
while ($browser->Busy) {
    com_message_pump(4000);
}
$im = imagegrabwindow($handle, 0);
$browser->Quit();
imagepng($im, "iesnap.png");
imagedestroy($im);
?>

imagegrabwindow