Does anyone know of any software or code that can solve the following problem?

I have a custom application whose window is larger than the computer screen. When recording with Bandicam in window mode, the parts of the window that extend beyond the screen are not rendered and appear black. How can I record the entire window?

Without enlarging the screen or connecting additional devices, one method to record windows beyond the screen is to directly capture the rendering data from memory (which is too difficult), or to display the parts of the window that extend beyond the screen in a background window (which Bandicam can capture). However, this would require opening many recording programs and then splitting the large window into many smaller windows.

Is there a way to display the parts of the window that extend beyond the screen on another side of the screen?