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 system.
It can have any of the following values:
ValueMeaningmdNearestChoose the monitor that comes closest to matching…
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…
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 executes a Help command (through the HelpCommand method) or when it brings up context-sensitive Help (through the HelpContext or…
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…
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 graphic, the type of which is specified in the Graphic property. It is used in place of a TGraphic if the graphic can be of…
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…
This Is How TShiftState Works For Windows App Development
February 16, 2022
TShiftState in DelphiVCL indicates the state of the modifier keys – shift/ctrl/alt, the mouse buttons, or touch devices when you are performing Windows app development.
The TShiftState type is used by key-event and mouse-event handlers to determine the state of the…
DelphiVCL is a powerful framework for creating excellent, modern, graphical user interfaces (GUIs) for your Python programs. DelphiVCL is independent of Delphi and does not require Delphi to be installed. However, you can make use of Delphi’s powerful IDE software and its easy-to-use designers (available even in the free Community Edition) to visually design and advance your user interface for…
