imagegrabwindow
(PHP 5 >= 5.2.2)
imagegrabwindow — Captures a window
说明
resource imagegrabwindow
( int $window_handle
[, int $client_area = 0
] )
Grabs a window or its client area using a windows handle (HWND property in COM instance)
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);
?>
注释
Note:
This function is only available on Windows.
参见
imagegrabscreen() - Captures the whole screen