> Hmm? But he only wants to change the title of the window. Even on Windows > that should work from a different thread. However a platform independent > SetWindowTitle() for ptcgraph would be rather useful I guess.
I did a quick test and ran one program that did a writeln of it’s handle, then put that handle in another program and ran it and I was able to change the window title of the first program with the second program. So if ptcgraph also had the graphwindow : handle variable I think it would work. >Though I'd like to know why he needs ShowWindow()... My application is purposefully designed not to use a mouse… It’s CNC control software and mice, even optical ones out in dusty shops are tedious and difficult… it’s often difficult to even find a place to put a mouse, nevermind seeing a pointer when the screen is full of sawdust. So I have keyboard commands that get me back to the console window where I can look at some things like the contents of some variables, then when I’m done I hit another key and it puts me back on the graphics window. I just use both crt and pctcrt and do things like crt.readkey and pctcrt.readkey to know which screen got the input. I can get by without ShowWindow() because I can alt-tab between the windows without a mouse, and admittedly there isn’t a huge use for the console window, but it is a lot nicer for the program to put the correct window on top by itself. It would be nice if I could: 1. The above mentioned ShowWindow() 2. Make the graph window full screen always, it normally does not come up full screen it’s the correct size for full screen but mispositioned.. I can probably fix this in a shortcut that starts it but would be nice if the program itself forced full screen 3. Get rid of the windows titlebar all together, I could just draw my own. I was able to shut the title bar off with the graph unit, but the window would still be the size of the screen minus the bar. I believe if the titlebar was defined to be shut off before the window was created, or shortly after then I could have completely full screen with no title bar. But I don’t know where or how the window is created to do that. 4. If I can’t get rid of the titlebar, then setting a custom window title would be nice, preferably after my program was running so I could put status information up there, but if not possible then a one time custom title bar name would be great. James From: fpc-pascal [mailto:fpc-pascal-boun...@lists.freepascal.org] On Behalf Of Sven Barth via fpc-pascal Sent: Tuesday, May 16, 2017 2:00 AM To: FPC-Pascal users discussions <fpc-pascal@lists.freepascal.org> Cc: Sven Barth <pascaldra...@googlemail.com> Subject: Re: [fpc-pascal] FPC Graphics options? Am 16.05.2017 02:46 schrieb "Nikolay Nikolov" <nick...@gmail.com <mailto:nick...@gmail.com> >: >> I also no longer have the 'graphwindow' handle variable so I had to comment >> out anything that was using it like >> >> SetWindowTextA(graphicwindow,graphwindowtext); >> And >> ShowWindow(graphwindow, SW_SHOW); >> So I just commented them out for now. I'm hoping there is a way to get >> around the graphwindow variable because I was using the above 2 functions >> and I don't know how else to determine the graphic window handle... but the >> performance gain and ease of implementation will make working out any other >> issues worth the effort. Any advice on how I can capture the graph window >> handle would be appreciated > > Unfortunately, you can't do that and it's actually the main reason why > ptcgraph is fast. Even if you modify the ptcgraph source, so that you get the > window handle, it would do you no good, because the window is created in a > different thread and this means that you cannot draw to the window from your > program's thread. In fact, all the ptcgraph drawing routines actually render > to an internal software buffer and issue no winapi drawing calls at all. > That's the reason ptcgraph is fast and the regular graph unit is slow - the > winapi drawing routines are really the bottleneck in this case and not the > speed of the code, generated by FPC. Hmm? But he only wants to change the tttle of the window. Even on Windows that should work from a different thread. However a platform independent SetWindowTitle() for ptcgraph would be rather useful I guess. Though I'd like to know why he needs ShowWindow()... Regards, Sven
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