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 optional.
MessageBox is an encapsulation of the Windows API MessageBox function, which is described at…
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…
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 are defined for commonly used ModalResult values:
Constant
Value
Meaning
mrNone
0
None. Used as a…
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…
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 bitmap graphic and automatically manages the realization of the palette when drawn.
To draw a bitmap on a canvas, call…
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…
DelphiVCL.DateTimePicker or TDateTimePicker displays a list box for entering dates or times.
TDateTimePicker is a visual component designed specifically for entering dates or times. It resembles a list box or combo box, except that the drop-down list is replaced with…
Description
delphivcl.Shape represents a geometric shape that can be drawn on a form.
Add a Shape object to a form to draw a simple geometric shape on the form. TShape introduces properties to describe the pen used to outline the shape and the brush used to fill it.
If the shape is only part of the image of custom control, use the methods of the control’s canvas instead.
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