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This seems to work: ; https://learn.microsoft.com/en-us/windows/win32/winauto/event-constants
; This program is adapted from https://purebasic.developpez.com/sources/?page=Pg_windows#read_url (Lecture des adresses URL des navigateurs Internet exploreur ou Firefox.)

EnableExplicit
#WINEVENT ...

It isn't quite the same as what you are asking but here is some code written by Wilbert in answer to a question I asked on the forum 12(!) years ago, which covers the same ground http://www.purebasic.fr/english/viewtop ... 06#p412706. I'm still using it.

The new flag for the WebGadget looks interesting, but I don't have any idea how to get started. Would someone please post an example so that I can "get off the ground floor"?

Thanks to Rashad. I had a feeling that it was one of those things which are simple - when you know how!

I am unable to stream rich text format text into the Editor Gadget in PB 6.04 (or 6.10 for that matter). The coding to stream the text is clearly correct because I can stream text into a Rich Edit Control created by the windows function CreateWindowEx. The following code illustrates the point ...

For me, one of the best improvements for this version is the introduction of the WebViewGadget. Up to now I have been using the WebGadget and the excellent CoMate plus to automate the logging in to some websites by entering text and "pressing" buttons. This has become less effective as the WebGadget ...

I was adapting a program to be DPI aware, and I had to keep toggling my desktop scaling manually from its recommended 100% to 150% (to make any positioning errors clear). This got a bit tedious but I found the information on the internet to change the scaling and adapted it to Pure Basic. The source ...

Davido sent me a message ages ago, drawing my attention to this post, but I have only just seen it! Coincidentally I have just written a post about moon phases (here: https://www.purebasic.fr/english/viewtopic.php?f=13&t=61671 You will find a link which points to some Applesoft Basic programs which ...

I think anyone reading this thread would be interested in the algorithms offered by "Sky and Telescope" magazine back in the 1980s. They published Applesoft Basic programs for all sorts of thing including phases of the moon. Amazingly, the source code for these programs is still available ( https ...

Thanks to those who replied, particulary to PeDe whose observation skills are clearly above average!. The fact that the order of calculation made a difference made me wonder which of the results was closer to the right answer so I used the Casio calculator here: https://keisan.casio.com/calculator ...

I was interested in the PureBasic routines for the Haversine (a calculation of the distances between two points on a curved surface) found here: https://www.purebasic.fr/english/viewtopic.php?t=47853 . This question is not about the formula but about two ways of calculating it. The code below shows ...

Try adding this procedure to your program somewhere convenient (It creates a PB image from the canvas gadget and copies it to the clipboard):
Procedure CopyHdcToClip()
Protected BitMapHandle.i, MemNeeded.i, MemPtr.i, BitMapWidth.i, BitMapHeight.i
Protected ImageHdc.i, hBmp.i
Protected CanvasDc.i ...

In attempting to simplify my code Rashad has spoilt the consistent interface I tried to create and reduced its functionality. I wanted it to be possible to right-click anywhere on the combo box, including the drop-down part, and have the entry returned (in the variable LookupWord) so it could be ...

I wanted to add a context menu to a combo box gadget and it proved trickier than I expected. The following code does seem to work and might save someone some time if they want to do the same thing.

EnableExplicit

Structure ComboBoxInfo
cbSize.l
rcItem.RECT
rcButton.RECT
stateButton.l ...

Thank you for your reply. I was running some gadget updates (SetGadgetText mostly), so I moved them to the main loop and I have been able to run many iterations on 3 different computers with no problems.

There is certainly no problem in principle going to a procedure in thread.