Calling dll functions: We have some custom DLLs which we would like to use with GuiXT. These DLLs need to be registered in Windows first before we can use them (in C# programing language for example).
Is it possible to call functions from external DLLs?

The Call statement supports dll calls provided the parameters are string parameters (not "integer", "float" etc.)
If you want to use registered ActiveX dll objects you will need the GuiXT Controls component.