A graphical user interface, more commonly known as a GUI, is an important component of software application programming for human-computer interaction, replacing text-based commands with user-interactive visual actions. With the aid of a GUI, users can perform operations on a device, platform, program, or application without having to type commands or comprehend the underlying coding. So, if you…
How To Create A FastAPI Server And Python GUI Client App To Manage Employees
October 25, 2022
Flask and FastAPI are popular Python micro-frameworks for building small-scale data science and machine learning-based websites or applications. Even though FastAPI is a relatively new framework, many developers use it in their new projects. In this post, we will first…
The ComponentIndex property or DelphiVCL.Application.ComponentIndex from DelphiVCL is used to indicate the position of the component in its owner’s Components property array.
Use ComponentIndex when iterating through the Components list of the component’s…
Use the Dispatch method or DelphiVCL.Application.Dispatch from the DelphiVCL library to call message-handling methods for the object, based on the contents of the Message parameter.
Call Dispatch to automatically pass messages to the appropriate message handler.
Dispatch determines whether a message is in the list of message handlers declared for the object. If the object does not…
How To Change Behavior Of Components For Windows Development
April 13, 2022
The ComponentStyle property or DelphiVCL.Application.ComponentStyle is used to govern the behavior of the component when you are carrying out Windows development.
ComponentStyle governs how the component interacts with the streaming system and the Object Inspector.
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…
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…
