LabWindows/CVI Idea Exchange

This issue has been discussed in other threads:

• http://forums.ni.com/t5/LabWindows-CVI/Stripchart-does-setting-ATTR-POINTS-PER-SCREEN-clears-history/m-p/1555196
• http://forums.ni.com/t5/LabWindows-CVI/Changing-X-scale-on-StripChart-resets-graph/m-p/724712

When a stripchart is horizontally resized, the X-scale range can't be changed, so that visible data in shrunk or stretched to the new dimension. But this behavior is not so useful.

It would be better if resizing the chart changed the X-scale accordingly, so that a larger or shorter period would be displayed.

But if you set ATTR_POINTS_PER_SCREEN parameter all the data history is cleared, so that it's impossible to resize the chart.

I think that resizing a chart in the way I described is a quite common need, so I suggest to implement ATTR_POINTS_PER_SCREEN in a way that doesn't clear the whole data history.

ClearStripChart() should be the only function that clears the chart.

A tree control can be used to implement radio button controls;

in this situation you can't completely dim one of the items (so that it is grayed and the user immediately sees it is inactive) because the function SetTreeItemAttribute() doesn't allow ATTR_DIMMED attribute.

You can dim the item label using SetTreeCellAttribute(), but the check box stays active (see this discussion).

The EVENT_MARK_STATE_CHANGE can be swallowed, but the check box has the aspect of an active check box, even if nothing happens when you click over it.

I suggest to add the attribute ATTR_DIMMED to SetTreeItemAttribute() so that the whole item can be dimmed (its check box too)

Hi,

I'd suggest to provide a simple up/down control, i.e. the arrows found in numeric or ring controls, but without the numeric / ring field.

For example, they might be used to adjust cursor position or scroll through a list.

Right now, it's not possible to set the numeric field width to zero, so there will always be a numeric control attached to the arrows (same is true for rings)

When I tried to accomplish something like this (following the discussion here) by putting two controls on top of each other, see below, I had to realize that z-plane order is not maintained. While this might be a bug, it's also not nice because the dashed line indicating the focus is disturbing, too.

Two controls on top of each other:

After clicking on the numeric control:

Thanks! 

Summary: I am looking for this control: 

Hello,

working with larger UIs may result in scrollbars showing up in the UI editor. Hence it would be nice if hitting the 'PageUp' or 'PageDown' keys would scroll the page up or down, respectively. Also 'Home', 'End' and the four cursor keys should be supported, similar to their functionality in the text editor. 

Thanks!

When using tab controls on a panel, every time you change the active tab in the UIR editor the file is marked as modified even if no real modification has been made on panels/controls. This is particularly annoying when you are simply looking at a UIR file but you don't want its date/time to be modified (e.g. in case the project has already been deployed to the customer and you want to keep the local copy of the UIR with the original date/time).

If your file is marked as read-only (same scenario as before: the application has already been deployed and you want to prevent modifications to it) you cannot even change the active tab page, neither in edit mode nor in operate mode (F4 - operate visible panel)!

It would be better in my opinion that a simple tab page switch does not forces the UIR to be saved.