Are you an expert in desktop apps and GUI development who want to also work with Python because of its simplicity, flexible use, and growing demand in the market out there? Or are you a Python Developer at any level who wants to start a GUI development journey? This article is for you.
We will review the two examples of the most powerful Python Desktop App and GUI Frameworks: Python For…
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.
DelphiVCL.DrawGrid.Row specifies the index of the row that contains the selected cell.
Use DelphiVCL.DrawGrid.Row at runtime to determine the current row in the grid. Setting Row moves focus to the cell in the current column that is in the new row. The first row has an index of 0, the second row an index of 1, and so on.
The selected cell in the grid can be located by reading the Row…
DelphiVCL.DrawGrid.Col specifies the index of the column that contains the selected cell.
Use DelphiVCL.DrawGrid.Col at runtime to determine the current column in the grid. Setting Col moves focus to the cell in the current row that is in the new column. The first…
We use DelphiVCL.Application.Destroy to destroy the application instance and all of its associated memory.
Never call DelphiVCL.Application.Destroy or DelphiVCL.Application.Free. Instead, use the application’s Terminate method to end the…
DelphiVCL.Application.Run method used to execute the application.
Do not call DelphiVCL.Application.Run. In Delphi’s VCL, when creating a new project, The IDE automatically creates a main program block in the project file that calls the Run method. When the application is executed, the application’s Run method is called.
DelphiVCL.Application.Run contains the…
