OnMinimize or DelphiVCL.Application.OnMinimize occurs when a Python GUI DelphiVCL application is minimized.
Write an OnMinimize event handler to perform special processing when the application is minimized. The application is minimized either because the user minimizes the main window or because of a call to the Minimize method. The Icon property determines the icon that represents the…
In the DelphiVCL Wiindows UI Toolkit TMonitorDefaultTo specifies which monitor to select when there is no match to the specified criteria.
TMonitorDefaultTo indicates which monitor should be used when the selection criteria do not match any of the monitors in the…
As a part of the DelphiVCL Windows UI Toolkit the DelphiVCL.Timer or TTimer is used to encapsulate the Windows API timer functions.
TTimer is used to simplify calling the Windows API timer functions SetTimer and KillTimer, and to simplify processing the WM_TIMER messages.
When performing development on Windows, the ComponentState property or DelphiVCL.Application.ComponentState is used to describe the current state of the component, indicating when a component needs to avoid certain actions.
ComponentState is a set of constants defined in the TComponentState type.
Components use the ComponentState property to detect states in which certain kinds of actions…
When carrying out Windows development, use the CurrentHelpFile property or DelphiVCL.Application.CurrentHelpFile to indicate the current Help file.
You can read CurrentHelpFile to determine the name of the Help file that is currently used by the application when it…
The Action parameter in DelphiVCL is used to specify the action associated with the control when carrying out Windows development.
Action is the action object that is associated with the control. Actions allow an application to centralize the response to user commands.
The ClassNameIs method or DelphiVCL.Application.ClassNameIs is used to determine whether an object is of a specific type when you develop windows software.
ClassNameIs determines whether an object instance or class reference has a class name that matches a specified string. This is useful to query objects across modules or shared libraries.
Let’s browse all the properties, methods, and…
In the past few decades, computers have relied on interaction with the user via a graphical user interface, i.e., a GUI. It consists of a main window, a menu, a toolbar, buttons, labels, etc. There are various Python tools for building GUIs, and here I will go through seven…
What Is DelphiVCL.Picture Used For In Windows Development?
February 18, 2022
DelphiVCL.Picture or TPicture contains a bitmap, icon, metafile graphic, or user-defined graphic. It is used in Windows development to display images to the user as part of the graphical user interface.
DelphiVCL.Picture or TPicture is a TGraphic container, used to hold a…
DelphiVCL.PaintBox or TPaintBox provides a canvas that applications can use for rendering an image when you develop Windows software.
We can use TPaintBox to add custom images to a form. Unlike TImage, which displays an image that is stored in a bitmap, icon, or metafile, TPaintBox requires an application to draw the image directly on a canvas. Use the OnPaint event handler to draw on the paint…
English 
French 
Portuguese 
German 
Japanese 
Russian 
Italian