OnDblClick event occurs when the user double-clicks the left mouse button when the mouse pointer is over the control.
We use the OnDblClick event to respond to mouse double-clicks.
OnDblClick is an event handler of type System.Classes.TNotifyEvent.
What is TNotifyEvent?
TNotifyEvent is used for events that do not require parameters.
The TNotifyEvent type is the type…
Quickly Browse All Available Functions in DelphiVCL4Python Library For Python Windows Apps
March 7, 2021
To make sure that you have already installed the DelphiVCL Python library correctly, you can simply test it using the Python dir() command:
import delphivcl
dir(delphivcl)
If you install it correctly, it will return all properties, methods, even built-in properties…
There are two ways for you to install DelphiVCL: By directly copying the module to your local/system path, or install it via pip.
1. Copy to Your Local or System Path
Download the DelphiVCL.pyd module Beta Release 0.01– Beta preview – 2021-18-01, and extract…
Learn Python With Tkinter Python GUI Tutorial For Beginners 12 - Simple GUI Calculator Using Tkinter Video
March 5, 2021
If you have been following the Tkinter Python GUI Tutorial For Beginners Series by Programming Knowledge on YouTube, you probably know now how to create basic GUI applications using the Tkinter GUI framework and Python programming language. From the previous tutorials, we learned how to create GUI apps like a simple Registration form, a Paint application, and even a Tic-Tac-Toe Game. Now, we are…
The most important benefits of the VCL over other competing technologies such as Tkinter and PyQT are as follows:
A standard set of components that includes all controls provided by the Windows UI framework. This set consists of components such as buttons, edits, menus…
.Width specifies the horizontal size of the control or form in pixels.
Use the Width property to read or change the width of the control.
Note: For tab sheet controls, changing this property at the run time does not affect.
Here are the examples of…
Learn To Build A Python GUI For Scientific Computing With The NumPy Library In A Delphi Windows App
February 28, 2021
If you need to perform complex transformations or mathematical calculations with matrices or arrays, then Python’s Numpy library is exactly what you need. You can easily run this library and give it a nice GUI using Python4Delphi (P4D). Python4Delphi is a free tool that allows you to work with Python scripts and objects, even create new Python modules and types in the Windows GUI.
The NumPy…
Learn To Work With Real-World Graphics Using The Python Matplotlib Library In A Delphi Windows App
February 27, 2021
With the growing demand for Data Science and Analytics skill sets, drawing graphics programmatically is a very popular task these days. You can easily solve it by combining the Matplotlib library with Python4Delphi (P4D). P4D is a free set of powerful tools that allows you…
Learn To Build A Python GUI For Easily Processing Images With Pillow Library In A Delphi Windows App
February 26, 2021
Are you looking for a simple way to process images programmatically, and build a nice GUI for them? You can do it easily by combining Python4Delphi and Pillow library, inside Delphi and C++Builder. Python4Delphi (P4D) is a free tool that allows you to execute Python scripts…
Learn To Build A Python GUI For Computer Vision Tasks With Powerful OpenCV Library In A Delphi Windows App
February 25, 2021
Are you looking for a powerful computer vision library and build a nice GUI for them? Try OpenCV library for Python. And for the GUI part, you can run it seamlessly with Python4Delphi (P4D). P4D is a free and simple tool that allows you to run Python scripts as well as create new Python modules and types in Delphi.
OpenCV (Open Source Computer Vision Library) is an open-source computer vision…
