3. Main Window

3.1. Role of each part

The window (called Main Window ) that appears after starting Winmostar has the configuration shown below.

In the title of Main Window, the name of the file currently being edited, the license and version of Winmostar in use are displayed.



Here you can also select commonly used functions in the main menu. You can check the role of each button by overlaying the pointer. In addition, only the following functions perform special operations.

  • Depending on the solver selected in the Solver pull-down menu solver (default is MOPAC) in the first row of the upper toolbar, the role of buttons such as Configure, Run will change.
  • Depending on the element selected in the Select element used in editing operations pull-down menu, the behavior of Add Atom and Change Element buttons beside it will change.
The molecular structure currently being edited is displayed. By default, the structure where carbon atom (green) and hydrogen atom (yellow) are bonded is displayed.If the View ‣ Items ‣ Information menu is checked, detailed information will be displayed at the top and bottom.Red circle indicates atom selection marker.In group selection state, atoms are surrounded by blue circles.You can toggle the number displayed on the side of each atom and the type of charge value from the View ‣ Labels/Charges menu.The color scheme can be changed from the Tools ‣ Preferences ‣ View .
Keyword Editor
The contents set in the configuration window of each solver are displayed. By default MOPAC settings are displayed.
Coordinate Viewer
The coordinates of each atom of the molecular structure displayed in Viewport are displayed.You can switch the display format and output format on the upper tab.By default Z-Matrix is selected.In a state where no group is selected, the line selected in Coordinate Viewer matches the atom with the marker (red circle).Group selection (blue circle) can be done by selecting multiple lines by Ctrl+left click or Shift+left click.
Coordinate Editor
You can enter the coordinates (Z-Matrix or XYZ format) of the atom with the marker (red circle) and the optimization flags.
Keyword Editor (secondary)
It is basically the same as Keyword Editor, but the contents entered here will appear after the coordinates in the input file of the solver. It is used only for some solvers such as GAMESS and Quantum ESPRESSO.

3.2. Mouse controls

In Viewport, you can operate with the mouse as shown in the table below. Details on how to select molecules/atoms can be found in Select menu.
Left click
Left drag
Right click
Right drag/
None Move marker Roll camera Replace with fragment Zoom in/out
Select molecule
or unselect
Pan camera Delete atom  
Select each atoms
or unselect
Select atoms in rectangle area    

Note that you can also zoom in or out by left-dragging the right end of Viewrport.

3.3. Shortcut keys

In Main Window you can use the shortcut keys in the table below.

Basic operations
New Ctrl+N
Open Ctrl+O
Save Ctrl+S
Save As Shift+Ctrl+S
Undo Ctrl+Z
Redo Ctrl+Y
Cut Group Ctrl+X
Copy Group Ctrl+C
Paste Group Ctrl+V
Help F1
Replace with Fragment F6
Add Atom by Specifying Position F4
Delete atom Shift+F4
Add/Change Bond F7
Delete Bond F8
Move Atom (Translate) F5
Change Element Shift+F5
Add Hydrogens to All Atoms Ctrl+H
Delete Group Ctrl+D
Build Ring F9
Modifying structure
Quick Optimization Ctrl+G
Move Group (Direct) Ctrl+M
Rotate Around Axis (2 Marked Atoms) Ctrl+R
Rotate Around Axis (3 Marked Atoms) Ctrl+A
Change Optimization Flags of Group Ctrl+I
Adjust All Bond Length Ctrl+J
Orbit Group Around Marked Atom Ctrl+F
Quick Optimization for Group Ctrl+L
Controlling Display
Zoom In F3
Zoom Out F2
Fit to Window Ctrl+4
Align View Ctrl+1, 2, 3
Show Keyword Editor & Coordinate Viewer F10
Export Image Ctrl+Alt+I
Copy Image Ctrl+Alt+C