It behaves as expected for me using VP 802. Did you check the automatically generated controlList for spurious (? invisible) items? I have a tiny suggestion for PDC: The automatically generated code for ProjectToolbar.pro needs the following: open core so that the following code does not need manual...

In TaskWindow do something like this (with some extra manipulations): facts msgForm: messageForm := erroneous. predicates onShow : window::showListener. clauses onShow(_, _CreationData) :- This:setClientSize(1000, 700), % make the application client window a little smaller center(), % center on desk...

Hi Choibakk! I'm glad you found the demo helpful. :D Lucida Sans is installed with Win10 -- I didn't think of setting up the demo for older versions of windows. I'm glad you could fix the problem. My code could be cleaned up and some day I may get around to that ... feel free to 'tune it up' and re-...

setName/2 only changes a string containing a fully qualified file name. It doesn't do anything to a file.

It belongs to the same family of functions as setPath/2and setExtension/2.

Good to know.
Has the "Go to usage" hot key (Shift-Ctrl-Alt-F) been fixed in Vip 9 as well?

In VIP 8.02 when debugging a console application: Put the code below into main.pro. Note what happens to the display of string S1 in the Variables window when running the application in the debugger. String is handled OK but displayed is ablated in some circumstances. run() :- S1 = "A1", % Variables...

That's better! I assume that the updates will be in the next update of VP 9.x and I should patch VP 8.02 myself or shadow the predicate. "... hitTest will also fail for points that are to right of the right most column" is expected behavior, and it looks like hitTest/3 also will fail if the point is...

Thanks for the deeper-dive into this quirk.
It took a while for me to sort out this unexpected behavior.
Using a code equivalent of my tryGetTextClickRt/2 for both left and right-click text retrieval should work well.

I ran across this quirk when trying to implement a right-click function in a ListviewControl -- unlike Left-clicking, Right-clicking on a column label is responded to as though the first data Item row were clicked. It is possible to work around that behavior by testing to see if the PNT clicked is i...

Besides the wiki, a good way to search for built-in VIP predicates is using the the IDE project tree explorer. In your project explorer expand the $(ProDir) directory and then expand the pfc directory. You will find many support classes there. Expand any of those that seem relevant (e.g., the string...

(1) Try double-clicking on onMessagesGetstring to highlight it and then scroll up and down in the file to see if you have some other predicate's clauses between the onMessagesGetstring clauses. Perhaps you have another attempt at writing onMessagesGetstring that you forgot to delete or comment out. ...

Do you need to actually process the initial bytes in your application or just know what is the file format? Have you looked at inputStream_file::openFileBom/2 ( or openFileBom/1 ) openFileBom : ( string Filename, fileSystem_api::accessPermit Access). Opens a file and sets its mode based on the prese...

Calling vpiProcessEvents/0 frequently in a long operation does slow down the operation significantly, but it may be worth it to display messages quickly enough to be useful. I have used a counter and called vpiProcessEvents/0 every "Nth" time to minimize unnecessary overhead. Would invalidating the ...

This behaves similarly in VP 8.02

Take a look at this discussion: viewtopic.php?f=2&t=15659&p=46361&hilit ... ize#p46361

And this: https://en.wikipedia.org/wiki/Serialization