def MainWindow(self, show=True):
'''
Main window.
'''
self.icons = nanogui.loadImageDirectory(self.screen.nvgContext(),
"icons")
self.main_wnd = Widget(self.screen)
layout = GroupLayout()
layout.setMargin(3)
self.main_wnd.setLayout(layout)
self.main_wnd.setFixedSize((self.main_width, self.main_height))
b = Button(self.main_wnd, "Export")
b.setFixedHeight(25)
b.setCallback(ps_act.ExportFiles)
# Slots.
slots = Widget(self.main_wnd)
slots.setPosition((20, 60))
slots.setFixedHeight(345)
self.DrawSlots(slots)
# Tools.
self.Tools(self.main_wnd)
# Final draw.
self.screen.setBackground(backgr_color)
self.screen.drawAll()
self.screen.drawContents()
self.screen.performLayout()
