DelphiVCL.SpeedButton or TSpeedButton is a button that is used to execute commands or set modes.
Use DelphiVCL.SpeedButton to add a button to a group of buttons in a form. TSpeedButton introduces properties that can be used to set graphical images that represent the different button states (selected, unselected, disabled, and so on). Use other properties to specify multiple images or to…
DelphiVCL.Rect or TRect defines a rectangle.
TRect represents the dimensions of a rectangle. The coordinates are specified as either four separate integers representing the left, top, right, and bottom sides, or as two points representing the locations of the…
DelphiVCL.Size or TSize is used to specify the width and height of an object.
We use TSize to specify the size of an object. The object can be a rectangle, a form, a button, and so on. Typically, the implied units of measurement are pixels.
cx is the width, and…
When running dir() to DelphiVCL library or any DelphiVCL methods and properties in all previous sections, you might find many of Python’s built-in objects and properties. Previously, we already discussed about __doc__, __file__, __loader__, __name__, __package__,__spec__, __class__, __contains__, __delattr__, __dir__, __eq__, __format__, __ge__, __getattribute__, __getitem__, __gt__, __hash…
DelphiVCL.RadioGroup represents a group of radio buttons that function together.
A RadioGroup object is a special group box that contains only radio buttons. Radio buttons that are placed directly in the same control component are said to be “grouped.” When…
DelphiVCL.ComboBox combines an edit box with a scrollable list. A ComboBox component is an edit box with a scrollable drop-down list attached to it. Users can select an item from the list or type directly into the edit box.
Note: The width of the button in a TComboBox is…
ListBox displays a collection of items in a scrollable list. We use ListBox to display a scrollable list of items that users can select, add, or delete. ListBox is a wrapper for the Windows listbox control.
We can browse all the properties, methods, and built-in properties of the DelphiVCL.ListBox using dir() command:
import DelphiVCL
dir(DelphiVCL.ListBox)
See the responses in…
Rect indicates the portion of the list view’s client area covered by the work area.
Set Rect to specify the sphere of influence of a work area. Rect is the bounding rectangle of a portion of the list view’s client area. If Rect specifies a region larger…
DelphiVCL.ScrollBar or TScrollBar is a Windows scroll bar, which is used to scroll the contents of a window, form, or control.
We can use TScrollBar to add a free-standing scroll bar to a form. Many controls have properties that add scroll bars which are an integral…
CheckBox represents a check box that can be on (checked) or off (unchecked).
A CheckBox component presents an option for the user. The user can check the box to select the option, or uncheck it to deselect the option.
The Caption property can be used to define an accelerator key to a control.
We can browse all the properties, methods, and built-in properties of the DelphiVCL.CheckBox…
