Window hooks in Igor Pro

A hook function sees what happens to the window itself, not to one control.

Function AttachHook()
    SetWindow AnalysisPanel, hook(cleanup)=PanelHook
End

Function PanelHook(STRUCT WMWinHookStruct &s)
    strswitch (s.eventName)
        case "kill":
            KillDataFolder/Z root:Settings
            break
        case "mousedown":
            Printf "click at %d, %d\r", s.mouseLoc.h, s.mouseLoc.v
            break
    endswitch

    return 0
End

How it works

1. SetWindow hook(name)= attaches it; the name lets you remove it.
2. The structure carries eventName, the window, and the mouse position.
3. Returning zero lets Igor handle the event as usual.

Keywords and builtins used here

• End
• Function
• KillDataFolder
• Printf
• STRUCT
• SetWindow
• break
• case
• endswitch
• return
• strswitch

The run, in numbers

Lines

16

Characters to type

298

Tokens

59

Three-star pace

90 tpm

At the three-star pace of 90 tokens a minute, this run takes about 39 seconds.

Type this snippet

Step 3 of 5 in Wiring it up, step 15 of 18 in Panels & GUI.

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