In previous examples, we already use .Items several times (see Getting Started with DelphiVCL III: Overview of Commonly used VCL Components). We use it in ListBox, ComboBox, and RadioGroup. Items contain the strings that appear in the ListBox, ComboBox, and RadioGroup.
Use Items to add, insert, delete and move items. By default, the items in a list box are of type Strings. Use this item type to…
We just learned from the previous PyCon 2020 videos that you can use Python to teach computers how to write poetry with style so it is not really surprising to see many other interesting usages of this programming language. In this video presented by Lukasz Langa, we will…
DelphiVCL.Memo is a wrapper for a Windows multiline edit control.
We use Memo to put a standard Windows multiline edit control on a form. Multiline edit boxes allow the user to enter more than one line of text. They are appropriate for representing lengthy…
DelphiVCL.StaticText or TStaticText is a windowed control that displays text on a form.
The DelphiVCL.StaticText or TStaticText component functions like TLabel, except that it descends from TWinControl and therefore has a window handle. Use TStaticText instead of TLabel when the component’s accelerator key must belong to a windowed control—for example, on an ActiveX property…
DelphiVCL.Splitter or TSplitter divides the client area of a form into resizable panes.
Add a splitter to a form between two aligned controls to allow users to resize the controls at runtime. The splitter sits between a control aligned to one edge of the form and the…
DelphiVCL.SpinEdit or TSpinEdit combines a TEdit box with a TSpinButton.
DelphiVCL.SpinEdit component is a TEdit with a TSpinButton attached. The Value of the edit box is numerical. By pressing the up and down buttons of TSpinButton, the Value is increased or…
DelphiVCL.SpinButton or TSpinButton allows the user to navigate through a range of values using the arrow buttons.
DelphiVCL.SpinButton is a control with two TTimerSpeedButtons, each button displaying an arrow. TSpinButton allows the navigation through a range of values using the arrow buttons to customize the value held by the control. Usually, it is used to increase or decrease the value…
TGridDrawState represents information useful when rendering the cell of a grid.
TGridDrawState represents state information about the cell of a grid that is being rendered. It is a set that includes one or more of the states listed in the following…
DelphiVCL.Button is a push-button control.
Use Button to put a standard push button on a form. Button introduces several properties to control its behavior in a dialog-box setting. To initiate actions, users choose button controls
To use a button that displays a…
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…
