ScrollArea (gb.qt4)

This control is a scrollable DrawingArea.

You use the ScrollArea exactly like a DrawingArea, except that:

  1. You must define the contents size with the ResizeContents method.

  2. You must take the value of ScrollX and ScrollY properties into account when drawing inside the Draw event handler (at least for things that must move when the user scrolls).

  3. A ScrollArea has no Cached property. You must implement the Draw event handler.

  4. You have a Shadow property. If you set it to TRUE, then nice shadows are drawn on borders where scrolling is possible.

Esta clase hereda UserContainer.

Esta clase es instanciable.

Propiedades
Background   Returns or sets the background color used by the control.
Border   Returns or sets the border type of the control.
ClientH   A synonymous for the ClientHeight property.
ClientHeight   Returns the visible height of the contents.
ClientW   A synonymous for the ClientWidth property.
ClientWidth   Returns the visible width of the contents.
ContentsH   A synonymous for ScrollHeight.
ContentsHeight   A synonymous for ScrollHeight.
ContentsW   A synonymous for ScrollWidth.
ContentsWidth   A synonymous for ScrollWidth.
Focus   Returns or sets if the control accepts keyboard events and focus.
Foreground   Returns or sets the foreground color used by the control.
NoAnimation   Return or set if animations are allowed when scrolling the ScrollArea.
NoBackground   Return or set if the control automatically draws its background.
NoShadow   Return or set if shadows are explicitly disabled.
Painted   Return or set if the Paint class must be used to draw on the scrollarea instead of the draw class.
ScrollBar   Return or set which scrollbars are displayed.
ScrollH   A synonymous for ScrollHeight.
ScrollHeight   Returns the contents height.
ScrollW   A synonymous for ScrollWidth.
ScrollWidth   Returns the contents width.
ScrollX   Returns or sets the horizontal scrolling position.
ScrollY   Returns or sets the vertical scrolling position.
Scrolling   Return if the ScrollArea is scrolling (because of the smooth scrolling animation).
Shadow   Return or set if all scrollarea controls display an inner shadow to indicate that scrolling is possible.
Tablet   Return or set if the ScrollArea will receive tablet events as mouse events.
Tracking   Returns or sets if the control will receive MouseMove events.
UseMouse   Return or set if the ScrollArea handles mouse wheel events.
View   Return the internal DrawingArea used by the control.

Inherited properties
Action   Returns or sets the action string associated with the control.
Arrangement   Returns or sets how this container arrange its children controls.
AutoResize   Indicates that the container automatically resizes to the size of its contents.
Centered   Center controls horizontally or vertically according to the container arrangement.
Children   Returns a collection of each control included in the container.
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   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.
Indent   Returns or sets if the children controls of the container are indented.
Invert   Return or set if the horizontal or vertical arrangement direction is inverted.
Left   Returns or sets the position of the left border of the control relative to its parent.
Margin   Returns or sets if there is a margin between the container border and all its children.
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.
NoTabFocus   Return or set if a control cannot be focused with the TAB key.
Padding   Returns or sets the number of pixels used as space between children controls, or container inner margin.
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.
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.
Spacing   Returns or sets if the children of the container are spaced out.
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.
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 top-level 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.

Métodos
EnsureVisible   Ensure that a specific area of the scrollarea is visible.
RefreshRect   Refresh a specific rectangular part of the ScrollArea contents, defined by the
ResizeContents   Define the size of the ScrollArea contents.
Scroll   Scroll the ScrollArea contents to the given position.

Inherited methods
Delete   Destroys the control.
Drag   Starts a drag & drop process.
FindChild   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.

Eventos
Draw   Raised when something must be redrawn.
Font   This event is raised when the font of the ScrollArea has changed.
Resize   Raised when the ScrollArea contents is resized.
Scroll   Raised whent the scrollarea has scrolled.

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.