Using event handlers - (obsolete version)

srod · Post by **srod** » Tue Jul 18, 2006 6:10 pm

You're welcome GeoTrail.

srod · Post by **srod** » Wed Aug 23, 2006 12:24 am

**Update (22nd August 2006)**

Inspired by netmaestro's work on his MouseHover library, I gladly accepted his help to upgrade the code behind the events #OnCursorEnter and #OnCursorExit which are fired when the mouse cursor enters or exits a registered control respectively.

Needless to say, they now behave exactly as I'd have liked in the first place! No longer can you 'miss' an event by moving the mouse too fast etc. No longer will overlapping controls or overlapping windows adversely effect the firing of these events. E.g. if the cursor moves over an overlapping window then the partly obscured control will immediately fire the #OnCursorExit event - as it should do! Moving the cursor into a container gadget and then into a child of the container will now fire #OnCursorEnter twice without firing a #OnCursorExit. After all, the cursor is still within both controls. Of course every #OnCursorEnter will always be matched with an eventual #OnCursorExit etc.

Those of you using this library should download the new version (link in the first post). Nothing else has changed so no code is broken etc.

Thanks again to netmaestro.

netmaestro · Post by **netmaestro** » Wed Aug 23, 2006 10:16 am

I've had a good look through this library and I think srod has done a brilliant job of coding here. This tool effectively simplifies the implementation of several difficult concepts, making the power of sophisticated event management instantly available to PureBasic beginner and expert alike. Hats off, srod, great work!

fsw · Post by **fsw** » Wed Aug 23, 2006 3:46 pm

Very good work SRod

Will make good use of it

srod · Post by **srod** » Wed Aug 23, 2006 3:56 pm

fsw wrote:Very good work SRod
Will make good use of it

You're welcome.

Must admit that of all the stuff I've written, this is the one I rely upon the most. Only recently have I turned to writing (or attempting to!) commercial software and I'm relying quite heavily on EasyVENT. It just means that I have one less thing to worry about and can concentrate upon the gui and the main program logic etc.

@netmeastro: thanks for the kind words. (How much do I owe you for that?

)

fsw · Post by **fsw** » Wed Aug 23, 2006 4:12 pm

Every time I move a window I get a invalid memory access error

srod · Post by **srod** » Wed Aug 23, 2006 4:18 pm

Can you post the code and which version of Windows are you using?

fsw · Post by **fsw** » Wed Aug 23, 2006 4:23 pm

Tested with "General demo.pb" and "Editorgadget demo.pb" on WinXP Pro SP2.

srod · Post by **srod** » Wed Aug 23, 2006 4:26 pm

No problems here on xp home.

Which line is throwing the error - could you give me the line number and past the code please?

Use PM if you don't mind so we don't clutter up the forum.

fsw · Post by **fsw** » Wed Aug 23, 2006 4:32 pm

Sent a PM

srod · Post by **srod** » Thu Aug 24, 2006 1:54 pm

Because of fsw's bug report above, I've had to rewrite the #OnCursorEnter and #OnCursorExit code.

The problem is thread based and, for the life of me, I can't figure out a) what's causing it exactly (we know which line of code is throwing the error, but it makes no sense!) and b) why it only appears on fsw's machine?

Still, taking no chances I've watered the code down a little and whilst the 2 events in question are now not quite as flexible, things are still better than earlier versions of EasyVENT.

Please accept my apologies and download again (see first post for the link).

@fsw: if your machine complains again, do me a favour - chuck it out the window!

Only kidding, I really appreciate your patience in helping me track down the bug, just a shame I can't fix it!

Derek · Post by **Derek** » Thu Aug 24, 2006 2:14 pm

I get an error saying 'Line 228: structure not found:ENLINK'.

Can't get anything to run.

Flype · Post by **Flype** » Thu Aug 24, 2006 2:28 pm

with PB4 or 3.94 ?

Derek · Post by **Derek** » Thu Aug 24, 2006 2:31 pm

I'm using the latest pb4 on winxp home sp2

srod · Post by **srod** » Thu Aug 24, 2006 2:37 pm

Your PB resident file should have this structure already defined!

Weird!

Try pasting this into the top of the main library file:

Code: Select all

Structure ENLINK
  nmhdr.NMHDR
  msg.l
  wParam.l
  lParam.l
  chrg.CHARRANGE
EndStructure

**EDIT: I've uploaded a new version which will define this structure if not already present.