The AutoLisp Ultimate Tutorial - Dialog Control Language - DCL

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The AutoLisp Tutorial - DCL

Dialog Control Language - Image

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Image

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Image

An Image is used to display a vector graphic picture inside a rectangle. To create the image you can use three different methods.

• Vector_image - Draws a single straight line in the current image.
• Fill_image - Draws a filled rectangle in the current image.
• Slide_image - Draws an AutoCAD slide in the image.

For this tutorial we will concentrate on the Slide_Image function. Everyone knows how to create a slide right? The MSLIDE command. Okay. We will assume our image is ready.

Let's look at the DCL Image definition and the AutoLisp functions required to display the image.

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DCL - You must supply either the width and height or one of these plus an aspect_ratio.

: image {
key = "sld";
height = 30;
width = 30;
color = 0;
is_enabled = false;
is_tab_stop = false;
}

AutoLisp

;;;--- First we need a slide name
(setq mySlideName "c:/acad/myslide.sld")

;;;--- Second we need the key to the image control
(setq myKey "sld")

;;;--- Next we send the slide name and the key to the update function
(upDateImage mySlideName myKey)

; NOTE: Notice mySlideName becomes sldName and myKey becomes key when passed
; as parameters to the upDateImage function.

;;;--- Function to update the slide

(defun upDateImage(sldName key)

;;;--- Get the width of the slide
(setq width (dimx_tile key))

;;;--- Get the height of the slide
(setq height (dimy_tile key))

;;;--- Start the slide definition
(start_image key)

;;;--- Wipe out the background
(fill_image 0 0 width height 0)

;;;--- Put the slide in the image area
(slide_image 0 0 width height sldName)

;;;--- Finish the slide definition
(end_image)

)

This function can be used over and over to display any slide image in an image control. Use the upDateImage function after the new_dialog call and before the action_tile statements. You can also use this function while the dialog box is displayed in one of your action calls.

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Last Updated April 1st, 2013

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