imagegrabwindow

(PHP 5 >= 5.2.2, PHP 7, PHP 8)

imagegrabwindowCaptures a window

说明

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)

注意:

This function is only available on Windows.

参数

handle

The HWND window ID.

client_area

Include the client area of the application window.

返回值

Returns an image object on success, false on failure.

错误/异常

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

更新日志

版本 说明
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.

范例

示例 #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);
}
$im imagegrabwindow($handle0);
$browser->Quit();
imagepng($im"iesnap.png");
imagedestroy($im);
?>

参见