The Lines Property contains the individual lines of text in the memo control. This works for native Windows development.
We use Lines to manipulate text in a memo control on a line-by-line basis. Lines is a DelphiVCL.Strings or TStrings object, so the TStrings methods may be used for Lines to perform manipulations such as counting the lines of text, adding new lines, deleting lines, or…
What Are Bi-Directional Properties In DelphiVCL Applications?
January 28, 2022
What is Bi-Directional (BiDi)?
Some languages do not follow the left to right reading order commonly found in Western languages, but rather use the right to left reading order for words and the left to right reading order for numbers. These languages are termed…
Everything You Need To Know About C++ ABI Inside DelphiVCL
January 27, 2022
C++ ABIs or more specifically: DelphiVCL.Application.CPP_ABI_1, DelphiVCL.Application.CPP_ABI_2, and DelphiVCL.Application.CPP_ABI_3 inside DelphiVCL.Application is C++ ABIs (Application Binary Interfaces, which are implemented under the hood, including how parameters…
When you develop windows software use CreateForm method or DelphiVCL.Application.CreateForm to create a new form.
Call CreateForm to dynamically create a form at runtime. Developers do not need to add code for creating most forms, because typically one or more calls to CreateForm are added automatically to the project’s source when using the form designer.
CreateForm creates a new form…
For development on Windows OnGetMainFormHandle or DelphiVCL.Application.OnGetMainFormHandle is the event triggered when reading the value of the MainFormHandle property.
Let’s take a look at all of DelphiVCL.Application.OnGetMainFormHandle properties and…
What does the OnMessage Event in DelphiVCL.Application do?
January 24, 2022
In Windows application development the OnMessage or DelphiVCL.Application.OnMessage occurs when the application receives a message from either the Windows operating system or another application.
How to use the DelphiVCL.Application.OnMessage event properly?
We use…
During windows development, or in fact any similar apps, use the FreeInstance method or DelphiVCL.Application.FreeInstance to deallocate memory allocated by a previous call to the NewInstance method.
All destructors call FreeInstance automatically to deallocate memory that was allocated by overriding NewInstance.
Do not call FreeInstance directly. FreeInstance should be overridden if…
In windows app development, the Observers or DelphiVCL.Application.Observers property indicates the TObservers object added to the TComponent.
Observers is a read-only property that returns the TObservers added to the TComponent, in order to use the notifications provided…
Are you looking for an easy and powerful way to collect MASSIVE amounts of tweets for your research and build a nice GUI for them? You can easily collect thousands or even millions of tweets by combining snscrape, tweepy, and Python4Delphi library, inside Delphi and…
What is the DelphiVCL.Application.OnHint event?
The OnHint or DelphiVCL.Application.OnHint occurs when the mouse pointer moves over a control or menu item that can display a Help Hint. This mainly applies to Windows app development.
How to use the DelphiVCL.Application.OnHint event properly?
Write an OnHint event handler to perform special processing when the mouse pauses over a control…
