DelphiDelphiVCLPythonPython GUIWindows

What Does The OnIdle Event In DelphiVCL.Application Do?

During Windows development, the OnIdle or DelphiVCL.Application.OnIdle occurs when an application becomes idle. Write an OnIdle event handler to perform special processing when an application is idle. An application is idle when it is not processing code. For example, an application is idle when it is waiting for input from the user. OnIdle is called only once, as the application transitions…
Read more
DelphiDelphiVCLPythonPython GUIWindows

What Is The OnHelp Event In DelphiVCL.Application?

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…
Read more
DelphiDelphiVCLPythonPython GUIWindows

What Are The Built-In Function Objects Inside DelphiVCL?

A built-in function object is a wrapper around a C function. Examples of built-in functions are len() and math.sin() (math is a standard built-in module). The number and type of the arguments are determined by the C function. You can browse all the built-in function objects available to us for windows development inside the DelphiVCL library using the Python dir() command: import…
Read more
DelphiDelphiVCLPythonPython GUIWindows

What Is A DelphiVCL.BitBtn And Why Would I Use It?

DelphiVCL.BitBtn is a push button control that can include a bitmap on its face. It’s an alternative to the regular button control which can’t directly use graphics on it. Bitmap buttons exhibit the same behavior as button controls. We use them to initiate actions from forms and dialog boxes. Bitmap buttons implement properties that specify the bitmap images, along with…
Read more