There are various tools for writing, developing and running Python code, from interactive mode to full-featured IDE software such as PyScripter and the excellent RAD Studio. In this article I will give a complete overview introduction of the tools that I have used myself to write great Python apps over the years.
What is the simplest way to run Python code?
The quickest way to run Python…
We use the Value property to set or specify any actions or parameters in the DelphiVCL library while using the IDE software.
Here is the working example of Value with CanSelect parameter:
def grdTestSelectCell(Sender, Col, Row, CanSelect):
if Col == 2 and Row ==…
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…
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 bi-directional (BiDi) because of this separation. The most common bi-directional languages are Arabic and Hebrew, although other Middle…
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…
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 methods:
import DelphiVCL
dir(DelphiVCL.Application.OnGetMainFormHandle)
See the responses in our Windows command…
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…
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 by the observers either with LiveBindings or for the developers’ own purposes.
Let’s browse all the properties…
