Corruption in uitable header when using setValue on the scrollbar
I am trying to create a table in MATLAB where I can change the scroll position programmatically. I created a uitable and extracted the handle of the Java UITablePeer object (designated here as htable ).
I then got the handle for the UIScrollbarPane object using:
hscroll = htable.getParent.getParent.getVerticalScrollBar
At this point, the figure looks like this (my actual table is more complicated, this is just something I made as an example):
The box at the lower left corner of the table is a pushbutton . When its callback is triggered, it uses the setValue method to change the scrollbar location, eg
hscroll.setValue(10)
After this, the table looks like this:
As you can see, the top of the table becomes corrupted. I've tried using the refresh function or repaint method, but they don't seem to help; the only way to "fix" this is to move another window (by dragging or Alt-Tabbing) such that the table is completely covered, and when I switch back to the table it's OK. Obviously, this isn't really an optimal solution.
Can anyone suggest a way to prevent or fix this?
Thanks
Here is my implementation (adapted from this code):
% create a sample table with random data
figure('Menubar','none', 'Position',[400 400 250 300])
h = uitable('Units','normalized', 'Position',[0 0 1 1], ...
'ColumnName',{'1','2'}, 'Data',num2cell(rand(50,2)>0.5));
% get Java handles
jScroll = findjobj(h, 'class','UIScrollPane');
jView = jScroll.getViewport();
jTable = jView.getView();
% scroll to specified row (make it the top row)
row = 20 - 1; % 20th row (zero-based index)
jView.setViewPosition(java.awt.Point(0, row * jTable.getRowHeight()))
jScroll.repaint() % workaround for any visual glitches
The table is correctly displayed (no glitches) every time I tried it:
链接地址: http://www.djcxy.com/p/68896.html上一篇: 如何在Octave中捕捉视频？