Table cell problem... how to distinguish scroll double click event or cell double click events ?

[davidx]

How can I distinguish scroll double click events or cell double click events ? In a table. Actually when a Double left click event happen ... I get the active cell with GetActiveTableCell... but there is no difference (same cell) when I double click the scroll bar in the table.

thank you very much !

[Al_S]

You need to know how wide the table is and how wide the scrollbar is. Here's some code you could add to the colview project that ships with CVI
if (event == EVENT_LEFT_DOUBLE_CLICK)
{
int nTableWidth;
int nScrollBarWidth;
GetCtrlAttribute (panel, MAINPNL_RESULTS, ATTR_SCROLL_BAR_SIZE, &nScrollBarWidth);
GetCtrlAttribute (panel, MAINPNL_RESULTS, ATTR_WIDTH, &nTableWidth);
// for EVENT_LEFT_DOUBLE_CLICK, eventData2 = mouse horizontal position
if (eventData2 >= (nTableWidth - nScrollBarWidth))
MessagePopup ("DoubleClick", "Double click on scrollbar");
}

[JuanCarlos]

David,

Another thing that you need to take into account here is the way that the events get processed in the table control.

When the user generates a click in the UI the table, the callback in your code gets called before the actual control proces the callback, the result is that when you get the callback the selected cell has not changed.

Here is a good example on what you need to do to read the cell where the user clicked. The program uses postDeferredCall().
http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3E8FF56A4E034080020E74861&p_node=DZ52154&p_source=External

You could check whether the selected cell changed or to identify if the click was for a scroll bar or an actual new cell selection.

I hope this helps.

Regards,


Juan Carlos
N.I.