DelphiVCL.Application.Title Property contains the text that appears below the icon representing the application when it is minimized.
We use the DelphiVCL.Application.Title property to modify the name of the text string appearing below the icon of the application. The default value is taken from the DLL or EXE file name at run time.
Set the Title at run time, or enter the value of…
The ControlDestroyed method or DelphiVCL.Application.ControlDestroyed is used to notify the application when a control is destroyed.
ControlDestroyed is for internal use and is called automatically by TControl. Do not call it directly.
ControlDestroyed notifies…
The ComponentCount property or DelphiVCL.Application.ComponentCount is used to indicate the number of components owned by the component.
Use the ComponentCount property to determine the number of components owned by a component, for example, when iterating through the…
The ComObject property or DelphiVCL.Application.ComObject is used to specify the interface reference implemented by the component.
Use ComObject to assign a COM interface implemented by a component to an interface reference. This property is used by components that support COM interfaces.
If the component is not a wrapper for a COM component, trying to read ComObject causes…
Text property contains a text string associated with the control.
We use the Text property to read the Text of the control or to specify a new string for the Text value. By default, Text is the control name. For edit controls and memos, the Text appears within the…
The ClassType method or DelphiVCL.Application.ClassType is used to return the class reference for the object’s class.
Note: ClassType dynamically determines the type of an object and returns its class reference, or metaclass.
Avoid using ClassType in…
The ClassName method or DelphiVCL.Application.ClassName is used to return a string indicating the type of the object instance (as opposed to the type of the variable passed as an argument).
Use ClassName to obtain the class name from an object instance or class reference. This is useful for differentiating object instances that are assigned to a variable that has the type of an ancestor…
The ClassInfo method or DelphiVCL.Application.ClassInfo is used to return a pointer to the run-time type information (RTTI) table for the object type.
ClassInfo provides access to the RTTI table for a given object type.
Some classes do not provide run-time type…
The CancelHint method or DelphiVCL.Application.CancelHint is used to cancel the display of a hint for a control.
Applications rarely, if ever, call CancelHint directly. CancelHint is used internally to cancel the display of hints at appropriate times, such as when a…
We use Caption to specify a text string that identifies the control to the user.
To underline a character in a Caption that labels a component, include an ampersand (&) before the character. This type of character is called an accelerator character. The user can then select the component by pressing ALT while typing the underlined character. To display an ampersand character in the…
