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imagegrabwindow

(PHP 5 >= 5.2.2)

imagegrabwindow — Captures a window

说明

resource imagegrabwindow ( int $window [, int $client_area ] )

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

参数

window

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");
?>

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");
?>

注释

Note: This function is only available on Windows.


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