National Instruments 373392C-01 Instrukcja Użytkownika Pobierz pdf (Strona 46)

Chapter 2 Measurement Studio .NET Class Libraries

Measurement Studio User Manual 2-28 ni.com

• Configure the format of value labels to engineering or date/time.

• Display tooltips reflecting the current value of the pointer.

• Interactively change the value of the control by clicking or dragging

and moving the pointer with the mouse.

• Interactively change the range of an axis and invert the axis at run time

by clicking on the axis end labels.

• Programmatically move the pointer to previous or next value.

• Perform hit testing of mouse cursor coordinates.

• Specify the image format of the control as BMP, GIF, JPEG, or PNG.

Use the Measurement Studio knob, gauge, and meter controls, as shown in

Figure 2-4, to input and display numeric data on your user interface.

Figure 2-4. Knob, Gauge, and Meter Windows Forms Controls

With the knob, gauge, and meter controls and the classes that interface with

the controls, you can perform the following operations:

• Specify the start and sweep angle of the arc programmatically or from

the Properties window.

• Use automatic division spacing, custom divisions, and invert the scale.

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National Instruments 373392C-01 Instrukcja Użytkownika Strona 46