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TDBEdit - a data-aware edit box for processing a single text-string from a dataset
Source position: dbctrls.pp line 168
type TDBEdit = class(TCustomMaskEdit) end; |
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protected |
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function GetReadOnly; override; |
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procedure SetReadOnly(); override; |
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procedure KeyDown(); override; |
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Invokes the OnKeyDown handler. |
procedure UTF8KeyPress(); override; |
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procedure Notification(); override; |
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function EditCanModify; override; |
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If True, the Edit box is allowed to modify the contents |
function GetEditText; override; |
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Get the text in the edit box (the string that has been masked) |
procedure Change; override; |
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procedure Reset; override; |
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Reset - put back to its default state with mask appearing in Text box and no string input |
procedure WMSetFocus(); message; |
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Handler for receiving Focus event. |
procedure WMKillFocus(); message; |
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Handler for loosing Focus event. Eventually triggers #lcl.Controls.TControl.EditingDone. |
procedure WndProc(); override; |
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public |
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constructor Create(); override; |
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Create - Constructor for TDBEdit: calls inherited Create then sets up data links and actions |
destructor Destroy; override; |
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Destroy - destructor for TDBEdit: frees data links then calls inherited Destroy |
function ExecuteAction(); override; |
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function UpdateAction(); override; |
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property Field: TField; [r] |
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The field in the DataSet from which data are to be displayed in the Edit |
published |
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property CustomEditMask: Boolean; [rw] |
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property DataField: string; [rw] |
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The name (as a string) of the field whose data are to be displayed |
property DataSource: TDataSource; [rw] |
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The DataSource to be used for supplying the data in the required Field. Ususally the result of a data query |
property ReadOnly: Boolean; [rw] |
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Prevents the user from changing the text. |
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The set of anchor definitions for this control. |
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property AutoSize: Boolean; |
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Allows to automatically adjust the size of the control, according to its content. |
property BiDiMode: TBiDiMode; |
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property BorderSpacing: TControlBorderSpacing; |
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Determines the inner and outer border spacing for this control. |
property BorderStyle: TBorderStyle; |
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property CharCase: TEditCharCase; |
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Allows to force the text into all upper or lower case. |
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The background color of the control. |
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property Constraints: TSizeConstraints; |
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The minimal and maximal Width and Height of this control. |
property DragCursor: TCursor; |
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The cursor shape shown while the control is dragged. |
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The operation when the control is dragged - Drag or Dock. |
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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. |
property EditMask: string; |
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EditMask - the sequence of characters used to obscure the string being typed (typically a sequence of asterisks) |
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The font to be used for text display in this control. |
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property MaxLength: Integer; |
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The maximum length of the text; zero for unlimited. |
property ParentBiDiMode: Boolean; |
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property ParentColor: Boolean; |
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If true, the Color of the control will be the same as the one from the Parent. Default is true. |
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 PasswordChar: Char; |
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Allows to obfuscate the displayed text, showing all characters as PasswordChar. |
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. |
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Determines the sequence of controls, reachable when the user presses the Tab key. |
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property TabStop: Boolean; |
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Allows the user to navigate to this control, by pressing the Tab key. |
property Visible: Boolean; |
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Allows to show or hide the control, and all of its children. |
property OnChange: TNotifyEvent; |
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Event handler for any change in text. |
property OnClick: TNotifyEvent; |
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Notification handler for mouse clicks. |
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 OnEditingDone: TNotifyEvent; |
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property OnEndDrag: TEndDragEvent; |
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Notification handler for the end of a dragging operation. |
property OnEnter: TNotifyEvent; |
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Handler for control receiving the focus. |
property OnExit: TNotifyEvent; |
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Handler for control loosing the focus. This is a good place for checking the finished user input. |
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Handler for keyboard key pressed. |
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property OnKeyPress: TKeyPressEvent; |
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Handler for a character entered by the user. |
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Handler for keyboard key released. |
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property OnMouseDown: TMouseEvent; |
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Event handler for mouse button going down. |
property OnMouseEnter: TNotifyEvent; |
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property OnMouseLeave: TNotifyEvent; |
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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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property OnMouseWheelDown: TMouseWheelUpDownEvent; |
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property OnMouseWheelUp: TMouseWheelUpDownEvent; |
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property OnStartDrag: TStartDragEvent; |
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Event handler for the start of a dragging operation. |
property OnUTF8KeyPress: TUTF8KeyPressEvent; |
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Handler for a character entered by the user. |
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TDBEdit - a data-aware edit box for processing a single text-string from a dataset |
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TCustomMaskEdit - base class for TMaskEdit, an Edit box with characters masked out to avoid unauthorised reading |
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The base class for controls presenting editable text. |
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The base class for controls which can contain other (child) controls. |
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The base class for visible controls. |
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The base class for LCL components associated with widgets. |
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TComponent |
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TObject |
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HowToUseDataAwareControls - Hints for accessing databases |
lazarus-ccr.sourceforge.net |