Re: [Lazarus] How to hide pop-up menu before taking a screen snapshot?
On Sun, 7 Feb 2021 17:16:31 +0300, Andrey Sobol via lazarus wrote: >Try to call > >Application.ProcessMessages(); >after disable a popup menu. > >Andrey. > Did not work. popmenu item still shows on captured image. The Sleep(300) in the menu handler does work OTOH... -- Bo Berglund Developer in Sweden -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] How to hide pop-up menu before taking a screen snapshot?
Try to call Application.ProcessMessages(); after disable a popup menu. Andrey. On 07.02.2021 17:09, Bo Berglund via lazarus wrote: On Sun, 7 Feb 2021 14:01:46 +, Denis Kozlov via lazarus wrote: I had a similar experience with taking a screenshot programmatically. Simply waiting or processing application messages after hiding the form often doesn't help, and results in a form being a part of the screenshot anyway. I managed to work around it by forcing Windows to repaint everything on the desktop by broadcasting WM_PAINT message, like so: SendMessageTimeout(HWND_BROADCAST, WM_PAINT, 0, 0, SMTO_ABORTIFHUNG, 1000, MsgResult); You might also need to disable transition effects (fade-in and fade-out) by setting the DWMWA_TRANSITIONS_FORCEDISABLED flag on the form before hiding it, and then unsetting it when showing the form again. DwmSetWindowAttribute(AForm.Handle, DWMWA_TRANSITIONS_FORCEDISABLED, @dwAttribute, SizeOf(dwAttribute)); Good luck, Denis Thanks for the suggestion! It turned out that (from a suggestion on the Lazarus forum) I could use a sleep(300) right before the call to the CopyScreenRect() instead of the other failed tests. Apparently the menu item is subject to Windows "animation" when it is closed... So this is now the code and it does work: procedure TfrmMain.miCopyImageClick(Sender : TObject); begin Sleep(300); CopyScreenRect; end; procedure TfrmMain.CopyScreenRect; var MyCapture : TBgraBitmap; Clip: TRect; begin try Clip := Bounds(Self.Left, Self.Top, Self.Width, Self.Height); Self.Visible := false; //To remove the capture frame from image MyCapture := TBgraBitmap.Create(); try MyCapture.TakeScreenShot(Clip); Self.Visible := true; Clipboard.Assign(MyCapture.Bitmap); finally MyCapture.Free; end; except on E: exception do Clipboard.AsText := E.Message; end; end; I tried various values for the sleep time and settled for 300, 200 does not quite fix it - a faded shadow image still remains. -- Andrey -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] How to hide pop-up menu before taking a screen snapshot?
On Sun, 7 Feb 2021 14:01:46 +, Denis Kozlov via lazarus wrote: > >I had a similar experience with taking a screenshot programmatically. >Simply waiting or processing application messages after hiding the form >often doesn't help, and results in a form being a part of the screenshot >anyway. > >I managed to work around it by forcing Windows to repaint everything on >the desktop by broadcasting WM_PAINT message, like so: > >SendMessageTimeout(HWND_BROADCAST, WM_PAINT, 0, 0, SMTO_ABORTIFHUNG, >1000, MsgResult); > >You might also need to disable transition effects (fade-in and fade-out) >by setting the DWMWA_TRANSITIONS_FORCEDISABLED flag on the form before >hiding it, and then unsetting it when showing the form again. > >DwmSetWindowAttribute(AForm.Handle, DWMWA_TRANSITIONS_FORCEDISABLED, >@dwAttribute, SizeOf(dwAttribute)); > >Good luck, >Denis Thanks for the suggestion! It turned out that (from a suggestion on the Lazarus forum) I could use a sleep(300) right before the call to the CopyScreenRect() instead of the other failed tests. Apparently the menu item is subject to Windows "animation" when it is closed... So this is now the code and it does work: procedure TfrmMain.miCopyImageClick(Sender : TObject); begin Sleep(300); CopyScreenRect; end; procedure TfrmMain.CopyScreenRect; var MyCapture : TBgraBitmap; Clip: TRect; begin try Clip := Bounds(Self.Left, Self.Top, Self.Width, Self.Height); Self.Visible := false; //To remove the capture frame from image MyCapture := TBgraBitmap.Create(); try MyCapture.TakeScreenShot(Clip); Self.Visible := true; Clipboard.Assign(MyCapture.Bitmap); finally MyCapture.Free; end; except on E: exception do Clipboard.AsText := E.Message; end; end; I tried various values for the sleep time and settled for 300, 200 does not quite fix it - a faded shadow image still remains. -- Bo Berglund Developer in Sweden -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Lazarus configuration - portable between versions?
LazarusDirectory tag indeed has version dependent paths. I don't remember what exactly it is used for. The Recent file lists are not important. They are updated dynamically and old entries will go away. So, you can copy the whole configuration if you do some minor editing. Juha -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] How to hide pop-up menu before taking a screen snapshot?
Hi, I had a similar experience with taking a screenshot programmatically. Simply waiting or processing application messages after hiding the form often doesn't help, and results in a form being a part of the screenshot anyway. I managed to work around it by forcing Windows to repaint everything on the desktop by broadcasting WM_PAINT message, like so: SendMessageTimeout(HWND_BROADCAST, WM_PAINT, 0, 0, SMTO_ABORTIFHUNG, 1000, MsgResult); You might also need to disable transition effects (fade-in and fade-out) by setting the DWMWA_TRANSITIONS_FORCEDISABLED flag on the form before hiding it, and then unsetting it when showing the form again. DwmSetWindowAttribute(AForm.Handle, DWMWA_TRANSITIONS_FORCEDISABLED, @dwAttribute, SizeOf(dwAttribute)); Good luck, Denis On 07/02/2021 09:37, Bo Berglund via lazarus wrote: I have worked on a tool to copy a region of the Windows desktop for use in illustrations. The tool consists of a transparent form which is supposed to be located on top of the area to copy. This form has a pop-up menu where there are 3 items to select from: - Copy image - Copy position - Close When I use the "Copy image" function the resulting image contains the selected menu item caption on top of the copied desktop bitmap... I have tried various ways to get rid of this but everything I tried has failed. So how can I hide the menu item caption in code before I make the image extraction? I even added a timer set to 50 ms interval and put the image copy in its ontimer event hoping that the menu click should have exited and the text disappeared before the image copy happened, but no go... Here is the way the copy is commanded via the popup menu: http://blog.boberglund.com/files/Lazarus_popmenu_usage.png And here is a captured image where the popup caption is visible: http://blog.boberglund.com/files/Lazarus_popmenu.png As you can see the caption of the clicked menu item is still present in the screenshot image... Here is parts of the code: procedure TfrmMain.miCopyImageClick(Sender : TObject); begin //CopyScreenRect; //Moved to timer //miCopyImage.Visible := false; //Does not work //self.Refresh; //Does not work timCopyImg.Enabled := true; //make copy inside timer event? end; procedure TfrmMain.miCopyPosClick(Sender : TObject); begin SaveRectCoords; //Saving rect coordinates to clipboard (OK) end; procedure TfrmMain.timCopyImgTimer(Sender : TObject); begin timCopyImg.Enabled := false; miCopyImage.Visible := false; //Does not work, caption still present self.Refresh; //Does also not work to remove caption CopyScreenRect; miCopyImage.Visible := true; //Put it back to enable next capture end; procedure TfrmMain.CopyScreenRect; var MyCapture : TBgraBitmap; Clip: TRect; begin try Clip := Bounds(Self.Left, Self.Top, Self.Width, Self.Height); Self.Visible := false; //Hide selection form before copy //Self.Hide; //Not working for popup menu item... MyCapture := TBgraBitmap.Create(); MyCapture.TakeScreenShot(Clip); Self.Visible := true; //Show selection form after copy is done //Self.Show; //Not working for popup menu item... Clipboard.Assign(MyCapture.Bitmap); except on E: exception do Clipboard.AsText := E.Message; end; end; Even Self.Visible or Self.Hide do not remove the menuitem caption What can I do? Lazarus 2.0.10 / fpc 3.2.0 on Windows 10 -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Some IDE/LHelp issues
On 04.02.2021 16:39, Rolf Wetjen via lazarus wrote: Hi Andy I've patched LHelp.exe with lhelp_index_combine_04.patch. The "unknown" tab issue is partly solved. Now all tabs have a caption. There's one strange behaviour: [FPDoc Documentation], [Programmer' Guide], [Reference Guide] and [User's Guide] doesn't show the default page if LHelp is called from the IDE via Help/CHM help or via context F1. They show an empty page. But it shows the default page if I open prog.chm for example in LHelp via File/Open. An other difference: Calling LHelp via context F1 doesn't show the toc. Tested with F1 on "TForm". Rolf Hi Rolf, I have placed the next version of patch and created a branch on a forum for discussion https://forum.lazarus.freepascal.org/index.php/topic,53218.0.html -- Andrey -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
[Lazarus] How to hide pop-up menu before taking a screen snapshot?
I have worked on a tool to copy a region of the Windows desktop for use in illustrations. The tool consists of a transparent form which is supposed to be located on top of the area to copy. This form has a pop-up menu where there are 3 items to select from: - Copy image - Copy position - Close When I use the "Copy image" function the resulting image contains the selected menu item caption on top of the copied desktop bitmap... I have tried various ways to get rid of this but everything I tried has failed. So how can I hide the menu item caption in code before I make the image extraction? I even added a timer set to 50 ms interval and put the image copy in its ontimer event hoping that the menu click should have exited and the text disappeared before the image copy happened, but no go... Here is the way the copy is commanded via the popup menu: http://blog.boberglund.com/files/Lazarus_popmenu_usage.png And here is a captured image where the popup caption is visible: http://blog.boberglund.com/files/Lazarus_popmenu.png As you can see the caption of the clicked menu item is still present in the screenshot image... Here is parts of the code: procedure TfrmMain.miCopyImageClick(Sender : TObject); begin //CopyScreenRect; //Moved to timer //miCopyImage.Visible := false; //Does not work //self.Refresh; //Does not work timCopyImg.Enabled := true; //make copy inside timer event? end; procedure TfrmMain.miCopyPosClick(Sender : TObject); begin SaveRectCoords; //Saving rect coordinates to clipboard (OK) end; procedure TfrmMain.timCopyImgTimer(Sender : TObject); begin timCopyImg.Enabled := false; miCopyImage.Visible := false; //Does not work, caption still present self.Refresh; //Does also not work to remove caption CopyScreenRect; miCopyImage.Visible := true; //Put it back to enable next capture end; procedure TfrmMain.CopyScreenRect; var MyCapture : TBgraBitmap; Clip: TRect; begin try Clip := Bounds(Self.Left, Self.Top, Self.Width, Self.Height); Self.Visible := false; //Hide selection form before copy //Self.Hide; //Not working for popup menu item... MyCapture := TBgraBitmap.Create(); MyCapture.TakeScreenShot(Clip); Self.Visible := true; //Show selection form after copy is done //Self.Show; //Not working for popup menu item... Clipboard.Assign(MyCapture.Bitmap); except on E: exception do Clipboard.AsText := E.Message; end; end; Even Self.Visible or Self.Hide do not remove the menuitem caption What can I do? Lazarus 2.0.10 / fpc 3.2.0 on Windows 10 -- Bo Berglund Developer in Sweden -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
