Hi all,
I believe the problems I was having for the last month with my mail
from the lists being blocked has finally been solved, so now I'm free once
again to pick your brains! <g>
I'm using a DBaware TreeView in an application that is set to
alClient in the left pane of a TSplitter. The Right pane holds a TListview.
Also, just above both the Treeview and the Listview I have toolbars with
buttons on them. My problem is with the horizontal scrollbar of the
Treeview.
First, there are no published properties for the scrollbars in the
Treeview. They simply appear and disappear automatically as required, and
most of the time this feature works quite well. However in this one
instance the horizontal scrollbar does not!
When the form first appears on screen, it does so at a height and
width set by the user and saved in an inifile. The splitter is set to
divide the form's width in half so that the Treeview and Listview are both
of the same approx width. And at this width, no horizontal scrollbar
appears in the TreeView as all it's node captions are well within it's
boundaries.
A button on the toolbar above the treeview, when clicked, resets the
forms width and height to their Minimum Constraint values, both of which are
quite small allowing ONLY the TreeView's toolbar to be seen. Clicking the
button a second time resets the form's width and height back to it's
previous, normal width and height settings so that again the full treeview,
Listview, and both toolbars are visible once more. However now, even though
the horizontal scrollbar is not needed again, it still shows! And this is
true even if I set the width of form so that the Treeview is 4 times wider
than necessary!
So it appears that when I minimize my form down to it's MinWidth
Constraint, even though the Treeview is not visible, it's horizontal
scrollbar is being activated. And once activated, the only way to get it to
disappear again is by manually adjusting the width of the Treeview via the
Splitter position, first moving it so the treeview width requires a
horizontal scrollbar, and then back to it's normal setting where the
horizontal scrollbar isn't necessary again! Moving it directly so the
Treeview is even wider does not get rid of it either!
I've tried setting and then resetting the splitter's position as
just described, in code when the Form's width is reset to normal again, but
that doesn't get rid of the scrollbar. It seems only to work if one does so
manually, so I don't know what else I might try to get rid of it. And the
ONLY published properties having anything to do with scrolling is the
ScrollBy property which takes two parameters, an x and y integer. I tried
setting these to 0 but that does nothing either.
Any ideas would be helpful!
from Robert Meek dba Tangentals Design CCopyright 2006
Proud to be a moderator of "The Delphi Lists" at elists.org
(["An unused program is the consequence of a higher logic!", nil]) As
written in The Compendium of Accepted Robotic and Surrlogic Theorems Used in
the Self Analysis of Elemental Positronic Pathways...1st Edition Revised
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