Scrolling table mouse wheel

Question

My UI contains a table that is initially empty.  When the app is launched I can mouse-over the table and use the mouse wheel to scroll through the (empty) table, but after the table is filled with values this functionality stops.  I can only scroll with the mouse wheel after left-click on the vertical scroll bar.  Any way to scroll the table without having to click the scroll bar?  Is there an attribute that can be set?

Answer 1

Hello !
Here is how I did it (be careful, you will have to force "FirstVisibleRow" variable to be inside of limits [1 ; number of raw in the table]...this is not done in the example) :
int CVICALLBACK tableCB (int panel, int control, int event,
void *callbackData, int eventData1, int eventData2)
int FirstVisibleRow;
switch (event)
// If mouse over the table => table is forced to be the active control of UI
case EVENT_MOUSE_POINTER_MOVE:
SetActiveCtrl (panelHandle, PANEL_TABLE);
break;
// If mouse wheel scroll is used
case EVENT_MOUSE_WHEEL_SCROLL:
// Get first row index
GetCtrlAttribute (panelHandle, PANEL_TABLE, ATTR_FIRST_VISIBLE_ROW, &FirstVisibleRow);
// Set new first row index : scroll-down if eventData1 = 2 (scroll-up otherwise, if eventData1 = 3)
SetCtrlAttribute (panelHandle, PANEL_TABLE, ATTR_FIRST_VISIBLE_ROW, (eventData1 == 2) ? FirstVisibleRow - 5 : FirstVisibleRow + 5);
break;
return 0;