In this post, we’ll use the DesignInfo property or DelphiVCL.Application.DesignInfo contains information used by the Form designer in Python Program Maker.
DesignInfo is used internally. Do not use this property in applications.
Let’s browse all the properties, methods, and built-in properties of the DelphiVCL.Application.DesignInfo using dir() command:
import…
The ExeName property or DelphiVCL.Application.ExeName contains the file name of the application’s executable file including path information.
In this post, we’ll use Use ExeName to obtain the name of the executable file for the application. ExeName is the…
When the user invokes an action, a series of calls ensue to respond to that action. First, the action list that contains the action generates an OnExecute event. If the action list does not handle the OnExecute event, then the action is routed to the Application…
Align or TAlign is used to specify the alignment of control within its parent. TAlign specifies how control is placed relative to its parent.
It can have one of the following values:
Value
Meaning
alNone
The control remains where it was placed. This is the default value.
alTop
The control moves to the top of its parent and resizes to fill the width of its parent.
DelphiVCL.Component is the common ancestor of all component classes.
Component is the base class for all components. Components are persistent objects that have the following capabilities:
IDE integration: The ability to appear on an IDE palette and be…
The Destroying method or DelphiVCL.Application.Destroying is used to indicate that the component and its owned components are about to be destroyed.
Destroying sets the csDestroying flag in the ComponentState property. It then calls the Destroying method for each…
The DestroyComponents method or DelphiVCL.Application.DestroyComponents is used to destroy all owned components.
DestroyComponents iterates through the components owned by the component, removing each from the list of owned components and destroying it.
It is not necessary to call DestroyComponents directly. DestroyComponents is automatically called when the component is…
Use the DefaultHandler method or DelphiVCL.Application.DefaultHandler to provide the interface for a method that processes message records.
DefaultHandler is called by Dispatch when it cannot find a method for a particular message. DefaultHandler provides message…
Specifies the Default Font used by the Application using DelphiVCL.Application.DefaultFont
June 18, 2021
Use the DefaultFont property or DelphiVCL.Application.DefaultFont to specify the default font used by the application.
DefaultFont specifies the default font used by the application. All newly created forms use DefaultFont if the ParentFont property is set to True.
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 application that the control passed as the Control parameter has been destroyed, so that the properties which refer to…
