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LabWindows/CVI Idea Exchange

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I'm used to do some "object-like" coding in C, like using function pointers in structures to behave like method in classes.

Unfontunately, the code completion is not working as I would expect: the function is not recognized when it comes from a structure, but in cases where the field of the structure has the same name as an existing function the code completion uses the function (which may be misleading)

I have some other complaints about arrays in structure but I have no precise example to give.

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Hi,

I'd like to suggest another command strengthening the table control: Because tables can be used also for documentation, it would be helpful to ease the printout of table controls by a dedicated command.

The PrintTable command should not print scrollbars, and it should include

- two integer attributes for the number of columns/rows that shall be printed per page

- a boolean attribute indicating if tables too large to fit on a page are split first horizontally or first vertically

- an integer attribute specifying the font size

- a boolean attribute if the header shall be repeated on subsequent pages

- a boolean attribute if the frame lines are printed or not

- two boolean attributes if the vertical/horizontal grid lines are printed

- an integer attribute specifying the thickness of the frame lines

- the option to generate graphic files (png, jpg): if several pages would be printed this should result in several graphic files

Right now these goals can be achieved only by creating a second, hidden table control with the requested attributes which is then filled programmatically.

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Hello,

If one is interested in having a popup menu that shows up only for row or column headers it would be convenient to have the analogon to the event EVENT_TABLE_ROW_COL_LABEL_CLICK (which actually is a EVENT_TABLE_ROW_COL_LABEL_LEFT_CLICK event...), i.e. I am suggesting an event that is fired when a right click is received on a table column (or row) label.

It should be added that right now this is already possible with 11 additional lines of code, see the example colview, so I do not consider this idea as urgent , but still...

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I had a customer associated with SR# 7325346 ask how to change the maximum value for his Y axis in CVI. I rightfully directed him to the SetAxisScalingMode function. The customer told me that they were using an equation to determine the Max parameter for their Y axis [YMax=2*x + sqrt(x) + log(x)] or something to that effect. He also said that the equation could change to something else, and he would like to change the equation on the fly within CVI.

Basically, he's asking for functionality that would enable a text box to act similar to an Excel cell, which could evaluate simple equations such as add(val1,val2) or sqrt(val3). We should build a tool that makes this possible.

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CVI 2010 offers a great feature, I was waiting for: I'm now able to set an installation directory for e.g. program data, working data and so on using the RootDrive option building a distribution kit. But, why didn't you enabled the "make directory writeable for all users" option? On every installation, I would have to enable the user right "writeable" for all users manually as administrator.

Another feature for the future might be an directory option, which asks the user at the installation prompt for any installation directory to set up a specified program data directory. This option should also have a possibility to set up a registry key automatically (e.g. %UserDefinedDir), so that programs could find the user selected directory by reading the registry.

Thanks

It might be handy if the increment and decrement arrows on Numeric controls (as well as numeric cells in Table controls) had the option to increment and decrement by a percentage of the control's value, rather than just a fixed value. Basically, I'm finding that I'm doing this type of thing quite a bit:

SetCtrlVal(panel, control, value);

SetCtrlAttribute(panel, control, ATTR_INCR_VALUE, fabs(0.01 * value));

This makes it so that the increment/decrement arrows on the control, when operated by the user, will change the control's value by a certain percentage of the control's value, rather than some fixed number. It would be handy if there was some way to automate this more, in the sense that the user interface could handle this for the programmer. I envision something along the lines of a new attribute like ATTR_INCR_TYPE where the programmer could set this to something like VAL_FIXED (for a fixed increment, as it behaves now), or VAL_PERCENT (the new proposed behaviour), and ATTR_INCR_VALUE would be either the fixed value, or the percentage. Or perhaps someone else may have a better idea on how to implement this. This would be especially handy for Table controls, where now I must loop through all the numeric cells on the table and set each increment value individually.

Also, note the fabs() above in the SetCtrlAttribute() line. This is needed as I get a library error if I try and set the increment value to a negative. Is there any reason that a value like -10.0 couldn't just be interpreted as 10.0 when setting the increment value?

Thanks.

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Actually, specifically a dot matrix font along the lines of the existing 7-seg one. I know it seems like a small thing, but at the end of the day presentation counts for a lot. Remember the days when HP kit ruled? Sure it was good at its task, but there was never a shortage of frequency counters. No, what it had in spades was good looks and a kind of exuded competance. UI's can do that too, as you know instantly when you see a bad one!

ps. There's probably less reason to include a set of Nixie tube fonts 🙂

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I want to change the background color on a Ring Control drop down portion using the "paint tool" and then selecting the operate tool in the Quick Edit Window. When I select the "operate tool" to look at the background color of the drop down portion of the ring control it is always "light grey". Even if I change the color of the ring control using the paint tool the drop down background portion still remains "light grey".

Provide a mechanism to allow the changing of colors to the drop down portion of the ring control to be changed programmatically also. The current version of CVI 2010 does not provide this capability.

I have created tables with multiple columns a few times, and seem to always have issues with my column widths and horizontal scroll bars.

1) Scroll Bars will show up focused on whichever column/row was added last. So you if your columns go past your table width and the last column was last edited, it is aligned to the right. I believe this should always be left or top aligned. Just irritating that I have to ensure I change my row and column back to 1 so it is aligned properly.

2) There is not an easy way have auto-sized columns stay within the table size when fixed ones present. For example: I have 4 columns, I want the first three to be fixed width and the last to autosize based on the table size. Currently this doesn't seem to work out in my situation with or without scrollbars.

3) Be able to select the column title bar to select to edit that column. If there are no rows added, the user must manually retype which column they want to edit then click elsewhere to make it active. (Also true with no columns for rows)

4) Allow user to click and highlight and copy text, but restrict editing cells. (But be able to change them programatically) There are a few workaround with this such as double click event, but would be nice if there was a preset in the Hot,Normal selection list.

Feel free to chime in as I'm sure there may be a few I have not found yet. (Or perhaps I'm incorrect above and couldn't find it in the documentation.)

I'd like to suggest an enhanced version of the command GetGraphCoordsFromPoint.

Right now, the return status of this function indicates if the mouse cursor is within the plot area of the corresponding graph.

I'd like to have the possibility determining if the mouse cursor is above the plot area, i.e. within the plot area (pixelwise) and directly on top the plot area.

The difference is in cases where the plot area is covered by other controls or menus: In this case (see the thread with example program here) the mouse may be well within the area, but not over the graph because the graph is covered (so the mouse cursor is over some other element)...

The motivation for this feature is the frequent wish to change the appearance of the mouse cursor: if it is located over the plot area, a cross hair cursor style might be more useful to indiciate e.g. mouse cursor coordinates, while if the mouse cursor is located above some other control element the cross hair cursor is disturbing and the default style is much more convenient.

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Hello,

I am using a graph with about a dozen annotations (not all of them are displayed simultaneously). Adding another annotation in the UI editor is not very convenient because I have to re-enter all the parameters glyph style, glyph color etc. Because there are about 10-15 settings I can not remember all of them and hence I have to switch back and forth between until the new annotation is ready...

it would be much more convenient if I simply could clone an existing annotation and then simply change its text

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LabWindows/CVI Idea Exchange

Code completion of types stored in structures

PrintTable (to printer or to graphic file)

EVENT_TABLE_ROW_COL_LABEL_RIGHT_CLICK

Excel code evaluation within CVI input

Allow the 'selection' of ring controls in indicator mode in order to copy and paste the displayed numeric value

Add a callback event that is fired after a tree/table control is sorted

Add "Numeric Horizontal Level Slide" type to table cells

Group controls on the UI editor

RootDrive option in the Edit Distribution Kit dialog

Suggestion for a new percentage behavior for the increment/decrement arrows on numerics

Picture control: stick the image to a specified corner

Saving Files order after CVI restart

New fonts would improve user approval

Set the angle of the strip chart axis names

Have Lab Windows CVI Provide Capability to allow the flexibility to change background color on a ring control

Improved Column Sizing and Scroll Bar Behavior of Tables

improved GetGraphCoordsFromPoint

Table cell line thickness

Allow Disable of Blinking Cursor in CVI Editor

cut & paste (clone) graph annotations