Graphical Panel Controls: Bitmap Button
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Bitmap Button controls provide two options for displaying image content within a graphical panel:
Single Image Display: A single image is displayed on a button, much like an On Off Button.
Sequential Image Display: Several images are selected; the first is displayed by default, and the others shown based on user input. This is similar to the Graphical Display control, but instead of the display moving based on a signal value, the image shown changes when the mouse is clicked: a left-click goes forward (showing the next image in the sequence) while a right-click goes back (showing the previous image). An example can be seen in Figure 1.
Table 1 lists the properties specific to a Bitmap Button control. A list of common properties can be found under Common Control Properties.
Table 1: Bitmap Button Control Properties
Property | Function and Options |
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Action | Dictates how the control functions:
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Image | Launches a special dialog box that allows you to select one or more images for this control; an example of the interface can be found in Figure 2. Use the + button to add an image to the control; after doing so, VSpy will show a preview of the image, along with its name, width, height, and Index Number. Press the - button to remove an image previously selected. |
FirstPixelIsTransparent | Enables or disables transparency within the button:
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DisplayOnly | Allows the control to be set to an output-only mode:
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Stretch | Specifies whether an image should be shown at its standard size, or stretched to fit the Bitmap Button control:
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