• Advanced List Box-Record List Control
• Auto-PopulatingList Boxand Combo BoxControls
• Buttons
• Cascading Selection Lists
• Check Box Controls
• Chrome Browser Control
• Combo Boxes
• Comparing Drop-down Lists and Popup Dialogs
• Conditional Control Properties
• Conditionally Showing Controls
• Conditionally Sizing Controls
• Control Properties
• Controlling Record Navigation with the Invoice Toolbar
• Copying Selected Text from a Memo Control
• Creating a Cascading List
• Creating a User Defined Control
• Creating and Using a Multi-Level Popup Menu
• Creating Custom Toolbars
• Creating the Navigation Toolbar
• Defining Which Controls Have Tab Stops
• Displaying a Wait Message While a Branch Expands
• Displaying the Navigation Toolbar
• Dynamically Sizing List Box Row Height
• Edit Combo Box with Bubble Help for Choices
• HtmlHost
• Image Controls
• ImageViewer Control - Displaying Images on an Xdialog
• Line Breaks
• List Box
• ListView
• More Dialog Box Controls
• Numbering the Rows in a List Box
• Other Controls
• Placing a Browser Control on a Form
• Placing an HTML Edit Control on a Form
• Setting Choices for List and Combo Boxes
• Setting the Text and Value Properties of Items in a Choice List Array
• Simple List Box-Record List Control
• Special Formatting for Text Box Controls
• Specifying the Default Button
• Standard Controls
• Supercontrols
• Tab Controls
• The Record List Control
• Toolbars
• Tree Control
• User Defined Controls
• Using a Combo Box to Dynamically Redefine a Browse
• Using a Tabbed Object to Selectively Display Controls
• Using Embedded Owner-Draw Specifications in Controls
• Using Owner-Draw Specifications in Controls
• Using Radio Buttons to Select a Record
• Using the Microsoft Calendar Control
• Where is the Mouse?
• Working with List Boxes, Combo Boxes, Radio Buttons Etc
• Xdialog ListBoxes Dynamically Computing the Display Expression
• Xdialog Listboxes Horizontal Scrolling
• Xdialog Preview Button

Combo Boxes

Description

Combo boxes are variants on the text box and radio button controls. Like a radio button, a combo box displays a list of values, but it displays the choices in a drop-down text box. You can specify the choices for the combo in one of three ways:

• Enclosing a comma separated list between '{' and '}' e.g. {Red,Green,Blue}

• By referring to an array that contains the choices

• By referring to a string variable that contains a CR-LF delimited list of choices

The syntax for a combo box object is:

[.size variable_name^={choice1,choice2,choiceN}]     or,
[.size variable_name^=choice_variable]     or,
[.size variable_name^=choice_array]

Where choice1, choice2, choiceN are the actual choices, or choice_variable is the name of a string that contains CR-LF delimited choices, or choice_array is the name of a array that contains the choices. The value of variable_name is a base-1 index if the variable is declared as Numeric. If undeclared or left un-initialized, the variable is a string that returns the text of the choice that is selected. The following script demonstrates a combo box in which the choices are explicitly stated by enclosing the choices between the '{' and '}' characters.

mode = "Shared"
result=ui_dlg_box("Title",<<%dlg%
Filename:| [.32filename];
Open as:;
Mode:| [.10 mode^={Shared,Read only,Exclusive}];

%dlg% )

This script creates this dialog, Combo Boxes:

Combo Boxes - Populated from a String

The following script is identical to the previous script, except that the choices displayed by the combo box come from a variable, which contains a CR-LF delimited list of choices. In addition, mode is declared as a numeric variable. Therefore, the dialog box will set its value to 1, 2, or 3.

mode = 1
choices = <<%dlg%
Shared
Read only
Exclusive
%dlg%
result=ui_dlg_box("Title",<<%dlg%
Filename:| [.32filename];
Open as:;
Mode:| [.10 mode^=choices];

%dlg% )

Limitations

Desktop applications only.

See Also

• List Boxes