07-19-2009
Information from screen
Hi,
Just wondering if anybody could point me in the right direction on this one.
What I'm basically trying to do is write a program to grab information off a webpage which is continually updating itself. I dont want to say take millions of screen shots, I just want the program to constantly monitor a particular part of the screen and store information.
Basically Im not necessarily looking for the cleverest way of doing this, rather a way which I can program myself. My background is that I have a functional knowledge of C programming for scientific purposes but very little knowledge of computers themselves. For instance I can write programs but dont even know how to take information in from the screen.
Thanks for any help.
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LEARN ABOUT HPUX
xtungrabkeb
XtUngrabKeyboard() XtUngrabKeyboard()
Name
XtUngrabKeyboard - release an active keyboard grab.
Synopsis
void XtUngrabKeyboard(widget, time)
Widget widget;
Time time;
Inputs
widget Specifies the widget which has the active keyboard grab.
time Specifies the time when the grab should end. CurrentTime is acceptable.
Availability
Release 4 and later.
Description
XtUngrabKeyboard() releases an active keyboard grab by calling XUngrabKeyboard(), passing the display of widget and time.
The time argument may be a timestamp or the constant CurrentTime. If the specified time is earlier than the last-keyboard-grab time or
later than the current server time the keyboard will not be ungrabbed.
See XtGrabKeyboard() for more information about grabbing the keyboard.
Usage
Most applications will never need to issue a grab. XtAddGrab() (called by XtPopup()) can be used to implement modal popups inside an
application, and XtSetKeyboardFocus() can be used to redirect keyboard focus within an application. Neither function actually issues a
grab, and so does not interrupt event processing by other clients.
See Also
XtAddGrab(1), XtGrabButton(1), XtGrabKey(1), XtGrabKeyboard(1), XtGrabPointer(1), XtSetKeyboardFocus(1), XtUngrabButton(1), XtUngrabKey(1),
XtUngrabPointer(1).
Xt - Keyboard Handling XtUngrabKeyboard()