Table right click

Question

Hello,
I am trying to setup a "right click menu" on a table with menu items related to the cell (or at least to the row) where the right click was hit.
For example two such menu items will be "Add new row after" and "Add new row before".
For this reason, I need to get the cell (or at least the row) x and y position numbers where the click was asserted. I have tried to modify the example which can be found here: http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3E8FF56A4E034080020E74861&p_...
with no success. It works fine with the left click, but not with the right.
Please notice also that I have managed how to hide the built in right menu items associated with a table control and how to insert mine with the respective functions. What I am missing is just how to retrieve the cell coordinates in the table after a right click on it.
Many thanks for your suggestions,
Marco
Solved!
Go to Solution.

Answer 1

If you install your own menu callback(s), you can detect the active cell by using GetActiveTableCell inside the callback, this way:
void CVICALLBACK MenuCallback (int panelHandle, int controlID, int MenuItemID, void *callbackData)
    char    msg[512];
    Point    cell;
    GetActiveTableCell (panelHandle, controlID, &cell);
    if (!cell.y || !cell.x)
        MessagePopup ("Context menu", "No actual cell selected");
    else {
        sprintf (msg, "Active cell is:\nrow %d\ncolumn %d", cell.y, cell.x);
        MessagePopup ("Context menu", msg);
A table always has an active cell, which is independent from where the user clicks on the control, so in this case the "no cell selected" is not likely to happen. If you want to activate an actual cell depending on the mouse position you must hide the control menu and use the following lines in the table callback (not in the menu callback):
    switch (event) {
        case EVENT_LEFT_CLICK:
        case EVENT_RIGHT_CLICK:
            GetTableCellFromPoint (panel, control, MakePoint (eventData2, eventData1), &cell);
            if (cell.x == 0 && cell.y == 0) return 1;    // Mouse not on the cells area
            GetNumTableRows (panel, control, &r);
            SetTableCellRangeAttribute (panel, control, VAL_TABLE_ENTIRE_RANGE,
                ATTR_TEXT_BOLD, 0);     // Disable highlighting on the whole table
           SetTableCellRangeAttribute (panel, control, VAL_TABLE_ROW_RANGE (cell.y),
                ATTR_TEXT_BOLD, 1);     // Highlight entire row
            if (event == EVENT_LEFT_CLICK) break;
            // Context menu
           choice = RunPopupMenu (panel, control, panel, eventData1, eventData2, 0, 0, 0, 0);
            switch (choice) {
                case 0:                // No choice
                   break;
                // Here menu items must be added to handle operator selection
            break;
        // Other event cases here if needed
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