[Overview][Types][Classes][Procedures and functions][Index] |
[Properties (by Name)] [Methods (by Name)] [Events (by Name)]
Implements a control with a rectangular drawing area using a given Font and Color.
Source position: extctrls.pp line 449
type TPaintBox = class(TGraphicControl) |
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protected |
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class procedure WSRegisterClass; override; |
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Registers this component class with the current WidgetSet. |
procedure Paint; override; |
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Draws the content for the control. |
class function GetControlClassDefaultSize; override; |
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Gets the default size used for new instances of the class. |
public |
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constructor Create(); override; |
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Constructor for the class instance. |
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A clipped window into the parent Canvas. |
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published |
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Specifies the placement of the control inside its Parent. |
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The set of anchor definitions for this control. |
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property BorderSpacing: TControlBorderSpacing; |
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Determines the inner and outer border spacing for this control. |
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The background color of the control. |
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property Constraints: TSizeConstraints; |
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The minimum and maximum Width and Height for the control. |
property DragCursor: TCursor; |
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The cursor shape shown while the control is dragged. |
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Allows the user to drag the control. |
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property Enabled: Boolean; |
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Determines whether the control reacts on mouse or keyboard input. |
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The font to be used for text display in this control. |
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property Hint: TTranslateString; |
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The text to show in the Hint window for the control. |
property ParentColor: Boolean; |
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Use the Color from the Parent control, when enabled. |
property ParentFont: Boolean; |
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If true, the Font of the control will be the same as the one from the Parent. Default is true. |
property ParentShowHint: Boolean; |
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If true, the value of ShowHint for the control will be the same as the one from the Parent. Default is true. |
property PopupMenu: TPopupMenu; |
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A context-sensitive menu that pops up when the right mouse button is clicked over this control. |
property ShowHint: Boolean; |
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Enables the Hint display. |
property Visible: Boolean; |
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Allows the control, and all of its children, to be displayed or hidden. |
property OnChangeBounds: TNotifyEvent; |
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Event handler for a change of the Bounds of the control. |
property OnClick: TNotifyEvent; |
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Notification handler for mouse clicks. |
property OnContextPopup: TContextPopupEvent; |
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Invoked when a context-sensitive pop-up menu is requested. |
property OnDblClick: TNotifyEvent; |
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Event Handler for double mouse clicks. |
property OnDragDrop: TDragDropEvent; |
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This handler determines the action on an drop onto this control, in a drag-drop operation. |
property OnDragOver: TDragOverEvent; |
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Event handler for a control being dragged over this control. |
property OnEndDrag: TEndDragEvent; |
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Notification handler for the end of a dragging operation. |
property OnMouseDown: TMouseEvent; |
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Event handler for mouse button going down. |
property OnMouseEnter: TNotifyEvent; |
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Event handler for mouse entering the area of the control. |
property OnMouseLeave: TNotifyEvent; |
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Event handler for mouse leaving the area of the control. |
property OnMouseMove: TMouseMoveEvent; |
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Event handler for mouse movement within the control. |
property OnMouseUp: TMouseEvent; |
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Event handler for mouse button going up. |
property OnMouseWheel: TMouseWheelEvent; |
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Event handler for mouse wheel turned. |
property OnMouseWheelDown: TMouseWheelUpDownEvent; |
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Event handler for downward movement of mouse wheel. |
property OnMouseWheelUp: TMouseWheelUpDownEvent; |
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Event handler for upward movement of the mouse wheel. |
property OnMouseWheelHorz: TMouseWheelEvent; |
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Event handler for horizontal movements of the mouse wheel. |
property OnMouseWheelLeft: TMouseWheelUpDownEvent; |
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Event handler for left movements of the mouse wheel. |
property OnMouseWheelRight: TMouseWheelUpDownEvent; |
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Event handler for right movements of the mouse wheel. |
property OnPaint: TNotifyEvent; |
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Event handler signalled to paint the control. |
property OnResize: TNotifyEvent; |
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Notification handler for a resize of the control. |
property OnStartDrag: TStartDragEvent; |
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Event handler for the start of a dragging operation. |
end; |
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Implements a control with a rectangular drawing area using a given Font and Color. |
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TGraphicControl is the base class for all lightweight controls. |
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The base class for visible controls. |
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The base class for LCL components which have an associated widget. |
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TComponent |
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TObject |
TPaintBox is a TGraphicControl descendant which implements a control with a rectangular drawing area using a given Font and Color. Like its ancestor, TPaintBox provides a Canvas which is used to draw on the control surface. It provides an overridden Paint method to configure the Pen, Brush, and Font for the Canvas prior to calling the inherited Paint method. Use the OnPaint event handler to perform drawing operations needed for the control.
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TGraphicControl is the base class for all lightweight controls. |
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How to use StdCtrls, ComCtrls or ExtCtrls. |
lazarus-ccr.sourceforge.net |