T-FLEX Parametric CAD. Fundamentals. 2D Design

Parametricity of Custom Dialogs
Control Elements. Creating User Defined Dialog Boxes
In the course of reviewing this example, it was mentioned that control elements, just like other T-FLEX
CAD elements, possess general system parameters “Level”, “Layer”, etc. This allows creating parametric
dialogs, whose appearance changes depending on the kind of a model.
As an illustration to this statement, let's continue with the current example. Let's create a modification of the
dialog. The respective file in the library of samples is “Sample parametric dialog.GRB”.
Delete the elements “Preview” and “Picture” from the
dialog page. Then select the group box of the deleted
elements and double-click . In the coming up
“Control Parameters” dialog box, modify the group box
title by assigning the parameters “Caption” the string
“Drawing Title”.
Let’s place in this group box the control elements for
handling the drawing title. The variable “flag_3”, “size”
and $text will define, respectively, the visibility, size and
text string of the title. To control the title visibility, the
variable flag_3 needs just two values (“0” when the title is
displayed, “-1” – title hidden). Therefore, let's create a
“Check Box” control element for this variable.
Position the control as shown on the diagram. In the window “Insert Variable”, select the variable flag_3. In
the “Control Parameters” dialog box, assign the “Caption” parameter the string “Display Title”. Enter the
value “0” for the parameter “On”, “-1” - for “Off”.
Next, let's create control elements for defining the title font size. Since the variable "size" does not have a list
of values, one can use an “Edit Box” control. In the window “Insert Variable”, select the variable "size". Put
the explanation text “Font size:” before the control, using the “Static Text” element.
The next step is creation of control elements for modifying the title text.
The variable $text can be conveniently controlled by an “Edit Box” element as well. To provide support for
defining a multiline title, turn on the flag “Multiline EditBox”, using the option . Then specify the
element position and select the variable $text in the “Insert Variable” window.
To go to the new line in the multiline editor, use the key combination . The
control sequence “\n” can be used for separating lines as well.
Put the explanation text “Text:” before the “Edit Box”
control, using, as before, the “Static Text” element.
Thus, we have created the interface for controlling the
title text in our dialog. However, it is not yet parametric.
Let's modify it in such a way that the control elements
for modifying the font size and the title text string were
displayed in the dialog only when the flag “Display
Title” is turned on. To get this, let's relate the “Level”
parameter of the relevant elements to the variable flag_3.
Select by box the font size and the title string control
elements and click .
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