DelphiVCL.BasicAction is the ancestor class for all action objects.
BasicAction introduces the fundamental behavior for an action. Descendants of BasicAction add functionality for containment in an action list, for being categorized, and for specializing their behavior tailored to particular clients such as controls or menu items. Use BasicAction if you want to create an action for an…
DelphiVCL.Application.MessageBox is used to display a specified message to the user.
Use MessageBox to display a generic dialog box containing a message and one or more buttons. The Caption parameter specifies the caption of the dialog box and is…
CanSelect parameter is included inside the OnSelectCell event handler, while OnSelectCell occurs before a cell in the grid is selected.
Write an OnSelectCell event handler to specify whether any particular cell in the grid can be selected. The Col and Row parameters…
MsgDlgButtons defines a set of values used by MessageDlg and MessageDlgPos.
The MsgDlgButtons type defines the set of values a button in a message box can have. The TMsgDlgButtons type is used by the MessageDlg and MessageDlgPos functions.
The following table lists all the buttons that can appear on a form:
Value
Meaning
mbYes
A button with the text…
ModalResult represents the return value from a modal dialog.
ModalResult represents the value returned by a modal dialog. An application can use any integer value as a modal result value.
Although ModalResult can take any integer value, the following constants…
BitBtnKind is used to identify the appearance and use of a DelphiVCL.BitBtn control.
BitBtnKind specifies how a TBitBtn control is rendered and how it behaves when clicked. The following table lists all the possible…
DelphiVCL.Abort function is used to raise a silent exception.
We use Abort to escape from an execution path without reporting an error.
Abort raises a special “silent exception” (EAbort), which operates like any other exception, but does not display an error message to the end user. Abort redirects execution to the end of the last exception block.
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DelphiVCL.Bitmap is an encapsulation of a Windows bitmap (HBITMAP), including its palette (HPALETTE).
A Bitmap is a powerful graphics object used to create, manipulate and store images in memory and as files on a disk.
Bitmap contains an internal image of the…
DelphiVCL.Strings or TStrings is the base class for objects that represent a list of strings.
Use DelphiVCL.Strings or TStrings to store and manipulate a list of strings.
Descendants of TStrings can represent several individual strings, such as the individual lines that appear in a list box. Some objects use descendants of TStrings to represent one long body of the text so that it…
