DelphiVCL

In Windows application development the OnMessage or DelphiVCL.Application.OnMessage occurs when the application receives a message from either the Windows operating system or another application. How to use the DelphiVCL.Application.OnMessage event properly? We use the OnMessage to trap any or all Windows messages posted to all windows in the application. The OnMessage event occurs when an…

What is the DelphiVCL.Application.OnHint event? The OnHint or DelphiVCL.Application.OnHint occurs when the mouse pointer moves over a control or menu item that can display a Help Hint. This mainly applies to Windows app development. How to use the DelphiVCL.Application.OnHint event properly? Write an OnHint event handler to perform special processing when the mouse pauses over a control…

What is the DelphiVCL.Application.OnHelp event? The OnHelp or DelphiVCL.Application.OnHelp occurs when the application receives a request for Help. You can examine and set it in the IDE software. How to use the DelphiVCL.Application.OnHelp event properly? Write an OnHelp event handler to perform special processing when the user requests Help. The HelpContext and HelpJump methods…

OnGetActiveFormHandle or DelphiVCL.Application.OnGetActiveFormHandle is the event triggered when reading the value of the ActiveFormHandle property. Let’s take a look at all of DelphiVCL.Application.OnGetActiveFormHandle properties, methods, and built-in properties: import DelphiVCL dir(DelphiVCL.Application.OnGetActiveFormHandle) See the responses in our Windows…