Table control context menu depending on cell

[rovnyart]

Hello, i'm using CVI 9.0 and have a problem with table control.

I need to create a context menu item, which will run some code depending on cell, where right mouse button was clicked.

I tried to use NewCtrlMenuItem function to create new item, but i suppose there is no way to give cell coordinates to callback function fired by NewCtrlMenuItem.

Then i tried to fire table's callback function itself and use EVENT_RIGHT_CLICK, here is my code:

int CVICALLBACK DBTableRightClicked (int panel, int control, int event,
void *callbackData, int eventData1, int eventData2)
{

Point cell;

switch (event)
{
case EVENT_RIGHT_CLICK:
GetTableCellFromPoint(grPanelHandle, GRPANEL_DB_TABLE, MakePoint(eventData1, eventData2), &cell);
if (cell.x == 0 && cell.y == 0) return 1;
SetActiveTableCell(grPanelHandle, GRPANEL_DB_TABLE, cell);

//here i wanted to create new context menu

DebugPrintf("%i %i\n", cell.x, cell.y);



break;
}
return 0;
}

But for some reason my "cell" variable behaves very strange and does not correspond actual table cell coordinates, where i click right button.

Another problem is - the default context menu ("goto, find, next") is showing (but again, not every time) when i right click on my table.

So, i am very confused. Is there any way to handle this situation? I have no explanations, why such simple task becomes so difficult to implement in CVI.

Thanks for any help.

[RobertoBozzolo]

It is not so easy to dynamically customize the built-in context menu of a control. In situations similar to yours I resolved to hide the control menu with

SetCtrlAttribute (panelhandle, controlID, ATTR_ENABLE_POPUP_MENU, 0);

and create and display my own popup menu with:

case EVENT_RIGHT_CLICK:
	GetTableCellFromPoint (panel, control, MakePoint (eventData2, eventData1), &cell);
	if (cell.x == 0 && cell.y == 0) return 0;
	GetNumTableRows (panel, control, &r);
	// Highlight the full row
	SetTableCellRangeAttribute (panel, control, VAL_TABLE_ENTIRE_RANGE, ATTR_TEXT_BOLD, 0);
	SetTableCellRangeAttribute (panel, control, VAL_TABLE_ROW_RANGE (cell.y), ATTR_TEXT_BOLD, 1);
	if (event == EVENT_LEFT_CLICK) break;
	// Context menu
	choice = RunPopupMenu (manuBarHandle, menuID, panel, eventData1, eventData2, 0, 0, 0, 0);
	switch (choice) {
		// Elaborate based on the item selected by the user
	}
	break;
}

The menu bar must be loaded before it can be used and discarded when no longer needed; I suppose -but I haven't tried it- you can additionally install a menu dimmer callback on the menu bar with InstallMenuDimmedCallback function.

The cell returned by GetTableCellFromPoint does not correspond to the cell the user clicked on because you exchanged eventData parameters in the embedded call to MakePoint.