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.

الخصائص

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.

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.
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.
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.

الطرق

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.

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.

الأحداث

Change	This event is raised when a global desktop configuration has changed.
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.

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.