Switch over from excel window to powerpoint window using vba code.

[dibyendu2280]

Sir, need some help.
I opened one excel file & one powerpoint file. In excel file there are some command buttons(activeXcontrol) now I want to change over from excel
to powerpoint when I press command buttons in excel sheet. I tried below code but did not switch over to powerpoint window.

PowerPoint.Application.Visible = msoTrue

[dibyendu2280]

Configured.

PowerPoint.ActiveWindow.Activate