Keyboard events
Dear All,
In the main form of the application I'm working with, I have a TFrame
with the following layout of components:
MyFrame
OKBtn (mbOK)
CancelBtn (mbCancel)
PageControl1
TabSheet1
Memo1
TabSheet2
StringGrid1
StringGrid1.Options do not normally include goRowSelect and
goRangeSelect to enable the user to edit the cells.
To enable the user to copy and paste I include goRowSelect and
goRangeSelect in a OnKeyDown event (of the StringGrid) if ssShift is
in Shift and the key is VK_DOWN or VK_UP. (And in a similar way for
the mouse in a MouseMove handler) This works OK.
The user should be able to cancel the selection with the Esc key when
there is a selection in the grid or Escape the frame if there's not a
selection in the grid.
Currently pressing Esc always closes (cancels) the frame. This is OK
except for when there is a selection in the grid.
How do I setup keyboard event handlers to catch the Esc key when
there's a selection in the grid?
Thanks for any suggestions
Tom
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Tom
8/12/2008 1:30:18 PM
embarcadero.delphi.general
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Tom Brunberg wrote: > Dear All, > > In the main form of the application I'm working with, I have a TFrame > with the following layout of components: > > MyFrame > OKBtn (mbOK) > CancelBtn (mbCancel) > PageControl1 > TabSheet1 > Memo1 > TabSheet2 > StringGrid1 > > StringGrid1.Options do not normally include goRowSelect and > goRangeSelect to enable the user to edit the cells. > > To enable the user to copy and paste I include goRowSelect and > goRangeSelect in a OnKeyDown event (of the StringGrid) if ssShift is > in Shift and the key is VK_DOWN or VK_UP. (And in a similar way for > the mouse in a MouseMove handler) This works OK. > > The user should be able to cancel the selection with the Esc key when > there is a selection in the grid or Escape the frame if there's not a > selection in the grid. > > Currently pressing Esc always closes (cancels) the frame. This is OK > except for when there is a selection in the grid. > > How do I setup keyboard event handlers to catch the Esc key when > there's a selection in the grid? > > Thanks for any suggestions > Tom You may be interested in this CodeCentral entry: http://cc.codegear.com/Item/25888 What you need here is a handler for the CM_DIALOGKEY message on the frame itself. If you call the inherited handler it would fire the cancel button. You can first check the grids state and react to VK_ESCAPE in the appropriate manner, then set message.result to 1 to mark the key as handled. -- Peter Below (TeamB) Don't be a vampire (http://slash7.com/pages/vampires), use the newsgroup archives : http://www.tamaracka.com/search.htm http://groups.google.com
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Peter
8/12/2008 7:14:52 PM
"Peter Below" <none@nomail.please> kirjoitti viestissä:1678@forums.codegear.com... > You may be interested in this CodeCentral entry: > http://cc.codegear.com/Item/25888 Peter, I just downloaded the article and after briefly skimming through it, I'm convinced that all my current and future questions about keyboard handling are answered. Marvelous piece of document. And you published it only a few hours before I started to wonder how to solve this issue, Just On Time ;-) Thank you Best regards Tom
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Tom
8/12/2008 7:45:29 PM
Tom Brunberg wrote: > Marvelous piece of document. I agree. It should be part of the Delphi documentation <g> -- Dave Nottage [TeamB]
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Dave
8/13/2008 12:27:08 AM
Peter Below wrote: > Tom Brunberg wrote: > > > Dear All, > > > > In the main form of the application I'm working with, I have a > > TFrame with the following layout of components: > > > > MyFrame > > OKBtn (mbOK) > > CancelBtn (mbCancel) > > PageControl1 > > TabSheet1 > > Memo1 > > TabSheet2 > > StringGrid1 > > > > StringGrid1.Options do not normally include goRowSelect and > > goRangeSelect to enable the user to edit the cells. > > > > To enable the user to copy and paste I include goRowSelect and > > goRangeSelect in a OnKeyDown event (of the StringGrid) if ssShift > > is in Shift and the key is VK_DOWN or VK_UP. (And in a similar way > > for the mouse in a MouseMove handler) This works OK. > > > > The user should be able to cancel the selection with the Esc key > > when there is a selection in the grid or Escape the frame if > > there's not a selection in the grid. > > > > Currently pressing Esc always closes (cancels) the frame. This is OK > > except for when there is a selection in the grid. > > > > How do I setup keyboard event handlers to catch the Esc key when > > there's a selection in the grid? > > > > Thanks for any suggestions > > Tom > > You may be interested in this CodeCentral entry: > http://cc.codegear.com/Item/25888 > > What you need here is a handler for the CM_DIALOGKEY message on the > frame itself. If you call the inherited handler it would fire the > cancel button. You can first check the grids state and react to > VK_ESCAPE in the appropriate manner, then set message.result to 1 to > mark the key as handled. Wow! Incredible resource. Really masterfully done, Peter. I just downloaded and read some of the doc file. Can't wait to go over it all carefully. As I've said before, you really should consider putting out a book -- or a series of them. This prooves you could do a fantastic job of it. --
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Joe
8/13/2008 11:05:05 AM
Joe Hicks wrote: > > You may be interested in this CodeCentral entry: > > http://cc.codegear.com/Item/25888 > > Wow! Incredible resource. Really masterfully done, Peter. I just > downloaded and read some of the doc file. Can't wait to go over it all > carefully. As I've said before, you really should consider putting out > a book -- or a series of them. This prooves you could do a fantastic > job of it. Thanks for the flowers <g>. Unfortunately writing books is not an option. If I ever had to earn my living by writing I would starve, I'm way too slow at this... -- Peter Below (TeamB) Don't be a vampire (http://slash7.com/pages/vampires), use the newsgroup archives : http://www.tamaracka.com/search.htm http://groups.google.com
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Peter
8/13/2008 5:31:50 PM
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neil@parkwaycc.co.uk <neil@httl.net> has granted Aaron Leventhal <aaronleventhal@moonset.net>'s request for superreview: Bug 313443: Caret move events from keyboard input not reported for XUL textboxes https://bugzilla.mozilla.org/show_bug.cgi?id=313443 Attachment 228999: Also shows MSAA caret move events for hidden caret https://bugzilla.mozilla.org/attachment.cgi?id=228999&action=edit ...
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Aaron Leventhal <aaronleventhal@moonset.net> has asked neil@parkwaycc.co.uk <neil.parkwaycc.co.uk@myrealbox.com> for superreview: Bug 290355: Focus events wrong in manage bookmarks and tree views in general https://bugzilla.mozilla.org/show_bug.cgi?id=290355 Attachment 183422: 1) Simulate a focus event in our own code when a new window accessible is created, so that initial MSAA focus event gets fired, 2) Only fire MSAA focus for tree items when owning tree view is focused https://bugzilla.mozilla.org/attachment.cgi?id=183422&action=edit ------- Additional Comments...
superreview granted: [Bug 290355] Focus events wrong in manage bookmarks and tree views in general : [Attachment 183422] 1) Simulate a focus event in our own code when a new window accessible is crea
neil@parkwaycc.co.uk <neil.parkwaycc.co.uk@myrealbox.com> has granted Aaron Leventhal <aaronleventhal@moonset.net>'s request for superreview: Bug 290355: Focus events wrong in manage bookmarks and tree views in general https://bugzilla.mozilla.org/show_bug.cgi?id=290355 Attachment 183422: 1) Simulate a focus event in our own code when a new window accessible is created, so that initial MSAA focus event gets fired, 2) Only fire MSAA focus for tree items when owning tree view is focused https://bugzilla.mozilla.org/attachment.cgi?id=183422&action=edit ...
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