How to Open an XLSM File. An XLSM file is a spreadsheet that contains macros written in the Visual Basic for Applications, or VBA, language. Macros enable you to automate repetitive tasks and save ...

Launch Visual Basic 6 or Visual Basic Express. Open the project file in which you want to create a module and command button that creates an Excel spreadsheet from selected data.

I wrote a program that generates fractals in visual basic. The way it currently works is that I pass the function a handle to a device context and it uses SetPixel to draw to that hDC.