imagegrabwindow

(PHP 5 >= 5.2.2, PHP 7)

imagegrabwindow — Captures a window

说明

imagegrabwindow ( int $window_handle [, int $client_area = 0 ] ) : resource

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

Note:

This function is only available on Windows.

参数

window_handle

The HWND window ID.

client_area

Include the client area of the application window.

返回值

Returns an image resource identifier on success, FALSE on failure.

错误／异常

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

范例

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);
?>

参见