TMSFNCDataGrid trying to move the cursor position within the Scrollbar issue (from top to middle )

FNC TMS FNC UI Pack
1

I Have aVCL app with a TMSFNCDataGrid, connected to a DEVART Unidac TUniQuery and TUniDataSource.

On the TUniQuery I have an Aftersroll Event that searches some other things.

When having a lot of items in the Grid, the ScrollBar appreares.

So Far So good.

The following things are working in the TMSFNCDataGrid and the AfterScroll Event:

  • Scrolling with the MouseWheel
  • navigating with the arrowkeys
  • Clicking on the scrollbar on another position

The afterscroll event is triggert, and is working fast and nicely.

But when I leftclick the Cursor in the ScrollBar of the TMSFNCDataGrid (and hold down the left button) and then try to move the scrollbutton from the top to a lower position, this is not working properly. It only moves 2/4 mm and thats it. I can repeat this several times ans after 10 minutes, i'm 20 positions lower then when I started.

What a'm i missing here?

3

Hi,

I couldn't really reproduce the issue here. Do you mean the thumb of the scrollbar? Could you capture this in a screencast?

5

I mean this button:

TMS
TMS148×276 3.82 KB

6

Could you change the ScrollMode to cell scrolling?

7

That doesn't help.

I did allso try to set the ScrollUpdate from gsuContinuous to gsuOnce but that's allso not the solution.

8

You may want to switch to custom scrollbars, since the default scrollbars always trigger a scroll operation.

TMSFNCDataGrid1.CustomScrollBars := True;
TMSFNCDataGrid1.ScrollUpdate := gsuOnce;