imagegrabwindow
(PHP 5 >= 5.2.2, PHP 7, PHP 8)
imagegrabwindow — Captures a window
說明
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.
參數
-
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.
錯誤／異常
E_NOTICE is issued if handle is invalid
window handle.
E_WARNING is issued if the Windows API is too old.
更新日誌
| 版本 | 說明 |
|---|---|
| 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.
|
範例
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);
}
$im = imagegrabwindow($handle, 0);
$browser->Quit();
imagepng($im, "iesnap.png");
imagedestroy($im);
?>
參見
- imagegrabscreen() - Captures the whole screen