The DoApplicationIdle method or DelphiVCL.Application.DoApplicationIdle is used to process messages in the Message queue for certain events as part of your Windows development.
The DoApplicationIdle method forces a call to the protected method TApplication.Idle. Idle triggers the event OnIdle, processes the events OnMouseEnter and OnMouseLeave, and updates the hints.
Let’s browse all the…
Whether you are an aspiring programmer or someone who already has knowledge about using or developing Python programming language, PyCon is an annual event that you should definitely not miss. Despite the global pandemic at the time, PyCon 2020 was still a success. Speakers…
The DelphiVCL.ControlBar manages the layout of toolbar components as part of a low code application platform. With components like the controlbar in the DelphiVCL the amount of code you actually have to write is greatly reduced and often avoided altogether.
Use…
TFillStyle in Delphi’s VCL Windows UI toolkit indicates the type of color change that defines the boundary of a possibly non-rectangular region on a canvas.
TFillStyle values determine what type of color changes define the boundaries of a (possibly) non-rectangular region of a canvas, as indicated in the following table:
Value
Meaning
fsSurface
The region is defined…
ActionUpdateDelay property or DelphiVCL.Application.ActionUpdateDelay used to delay the call to DoActionIdle. This applies to native Windows development. The following example demonstrates the usefulness of this property:
Create an MDI project with the main form, an…
What is the DelphiVCL.Application.OnActionExecute Event?
The OnActionExecute or DelphiVCL.Application.OnActionExecute event occurs for Windows app development when an action’s Execute method is called and its action list has not already handled it.
Use the…
OnModalBegin or DelphiVCL.Application.ModalBegin occurs when a modal form is opened.
Write an OnModalBegin event handler to perform special processing when a modal form is opened.
How to examine the properties, methods, and built-in properties of the DelphiVCL.Application.OnModalBegin?
Let’s browse all the properties, methods, and built-in properties of the DelphiVCL.Application.OnModalBegin…
Whenever object-oriented programming is done in Python, then we will often come across the self method as their first parameter. This article explains the main concept of self method in Python for Windows development.
self represents the instance of the class in Python.
In Delphi VCL, TColor is used to specify the color of a control. It only works for development on Windows.
TColor is used to specify the color of a Windows-only control. It is used by the Color property of many components and by many other properties that specify color…
For Windows app development the BringToFront method or DelphiVCL.Application.BringToFront sets the last active window as the topmost window on the desktop above all other applications.
Use BringToFront to find the window owned by the MainForm that was last active and bring it to the foreground. BringToFront also tests to see if the window is visible and enabled before making it the topmost…
