ComboBox (gb.qt4)

Implements a text box combined with a popup list box. (The picture shows two comboboxes, the second being read-only).

This class inherits UserControl. This class is creatable . This class acts like a read-only array.

Properties

AutoResize

Since 3.21

Return or set if a read-only combo-box resizes automatically to fit its contents.

Background Returns or sets the background color used by the control.

Border Returns or sets if the control has a border.

ClearButton

Since 3.20

Return or set if an editable ComboBox displays a clear button.

Count Returns the number of elements in the popup list box.

Current Returns the current selected item of the popup list box.

Foreground Returns or sets the foreground color used by the control.

Index Returns or sets the index of the current selected item of the popup list box.

Length Returns the length of the text in the text box.

List Returns or sets the popup list box contents from a string array.

MaxLength Returns or sets the maximum permitted length of the text in the text box.

Opened

Since 3.20

Return if the combo box popup is opened.

Password Indicates if characters typed in the text box should be hidden and replaced by stars.

Placeholder Return or set the placeholder text, i.e. the text displayed when the Text property is void.

Pos Returns or sets the position of the cursor in the text box.

ReadOnly Indicates if the combo-box is read-only, i.e. if its text box is editable or not.

Selected Returns if some text is selected in the ComboBox.

Selection Returns an object used for managing the selected text.

Sorted Indicates if the popup list-box elements are sorted or not.

Text Returns or sets the text of the text box.

Inherited properties

Action Returns or sets the action string associated with the control.

Children Returns a collection of each control included in the container.

ClientH A synonymous for the ClientHeight property.

ClientHeight Returns the height of the area containing the controls.

ClientW A synonymous for the ClientWidth property.

ClientWidth Returns the width of the area containing the controls.

ClientX Returns the position of the left border of the area containing the controls.

ClientY Returns the position of the top border of the area containing the controls.

Cursor Use this property for assigning a custom cursor to a control.

Design Indicates that the control is in design mode.

Direction

Since 3.17

Return or set the control text direction.

Drop Returns or sets if a control accepts drops.

Enabled Indicates that the control is enabled.

Expand Returns or sets if a control will expand if included in a container that arranges its contents.

Font Returns or sets the font used to draw text in the control.

H A synonymous for the Height property.

Handle Returns the internal X11 window handle of the control.

HasFocus Returns whether the control has the focus.

Height Returns or sets the height of the control.

Hovered Returns whether the mouse cursor is inside the control.

Id A synonymous for the Handle property.

Ignore Returns or sets if a control must be ignored when its parent arranges its children.

Left Returns or sets the position of the left border of the control relative to its parent.

Mouse Returns or sets the appearence of the cursor when it points inside the control.

Name Returns or sets the name of the control.

Next Returns the next control having the same parent.

NoAnimation

Since 3.20

Return or set if the possible animations of a control are disabled.

NoTabFocus Return or set if a control cannot be focused with the TAB key.

Parent Returns the control container.

PopupMenu Return or set the name of the menu that will be popped-up when the user presses the right mouse button or the keyboard MENU key.

Previous Returns the previous control having the same parent.

Proxy Return or set the "proxy" of a control.

ProxyFor Return which control that control is a proxy for.

RightToLeft Return if the control is right to left oriented.

ScreenX Returns the position of the left border of the control in screen coordinates.

ScreenY Returns the position of the top border of the control in screen coordinates.

Tag Returns or sets the control tag.

Tooltip Returns or sets the tooltip shown when the mouse stays on the control for a short time.

Top Returns or sets the position of the top border of the control relative to its parent.

TopLevel

Since 3.21

Return the top-level window this control belongs to.

Tracking Returns or sets if the control will receive MouseMove events.

Visible Indicates if the control is visible or not.

W A synonymous for the Width property.

Width Returns or sets the width of the control.

Window Returns the window that contains the control.

X Returns or sets the position of the left border of the control relative to its parent.

Y Returns or sets the position of the top border of the control relative to its parent.

Methods

Add Inserts an element in the popup list box.

Clear Clears the combo box.

Close Close the popup of the combo box if it is opened.

CursorAt Returns the cursor screen position from a text position.

Find Finds an element in the poup list box and returns its index, or -1 if the element cannot be found.

Insert Inserts a string in the text box.

Popup Opens the ComboBox popup menu.

Remove Removes a element from the popup list box.

Select Define the selected text.

SelectAll Select the entire text.

Unselect Unselects the selected text of the ComboBox.

Inherited methods

Delete Destroys the control.

Drag Starts a drag & drop process.

FindChild

Since 3.4

Finds the first child control pointed by the X and Y coordinates.

Grab Grab the keyboard and the mouse so that all keyboard and mouse events are received by the control.

Hide Hides the control.

Lower Sends the control to the background of its parent.

Move Moves and/or resizes the control.

MoveScaled Moves and/or resizes the control.

Raise Sends the control to the foreground of its parent.

Refresh Trigger a redraw of the control.

Reparent Changes the container of a control.

Resize Resizes the control.

ResizeScaled Resizes the control.

SetFocus Gives the focus to the control.

Show Shows the control.

Events

Activate Raised when the RETURN key is hit in the text box.

Change Raised when the text in the combo box is modified.

Click Raised when an element is selected in the popup list box.

Cursor This event is raised when the cursor of the editable combo box has moved.

Inherited events

Arrange This event is raised when a container has just finished arranging its contents.

BeforeArrange This event is raised just before a container arranges its contents.

DblClick Raised when the user quickly clicks twice on the control.

Drag This event is raised when the mouse enters the control during a drag & drop process.

DragLeave This event is raised when the mouse leaves the control during a drag & drop operation.

DragMove This event is raised while the mouse moves inside the control during a drag & drop process.

Drop This event is raised when a drag is dropped in the control.

Enter Raised when the mouse enters the control.

GotFocus Raised when the control has got the focus.

KeyPress Raised when a key is pressed while the control has the focus.

KeyRelease Raised when a key is released while the control has the focus.

Leave Raised when the mouse leaves the control.

LostFocus Raised when the control has lost the focus.

Menu Raised when the user clicks on the control with the right mouse button, or if it hits the MENU key.

MouseDown Raised when a mouse button is pressed while the cursor is inside the control.

MouseDrag This event is raised when a drag operation should be started.

MouseMove Raised when the mouse moves inside the control while a mouse button is pressed.

MouseUp Raised when a mouse button is depressed while the cursor is inside the control.

MouseWheel This event is raised when the user moves or presses the mouse wheel while the mouse is inside the control.

NewChild This event is raised when a new child Control has just been inserted into the container.