Function getMainPanelWidthInPixel

getMainPanelWidthInPixel(): number
JMap.Application.UI.SidePanel.getMainPanelWidthInPixel

Returns the width of the main panel (side panel width minus menu width) in pixel.

Returns number
Example
```
// returns 390
JMap.Application.UI.SidePanel.getMainPanelWidthInPixel()
```