12.1p ListGridField canDragResize: false exception

[Blama]

Hi Isomorphic,

creating another testcase I noticed this issue in current 12.1 (v12.1p_2020-04-10, 12.0p OK IMHO).

Please see this modified sample and hover the right end of the non-resizeable field.
You'll get this exception:

18:35:00.264:MMV9:WARN:Log:TypeError: Cannot read property 'R' of null
Stack from error.stack:
    Canvas._getCurrentResizeCursor(<no args: exited>) on [Button ID:isc_Button_234] @ ISC_Core.js:3862:388
    Canvas.getCurrentCursor(<no args: exited>) on [HeaderMenuButton ID:countryList_headerMenuButton] @ ISC_Core.js:3866:60
    Canvas.getTagStart(<no args: exited>) on [HeaderMenuButton ID:countryList_headerMenuButton] @ ISC_Core.js:3114:52
    Canvas._insertHTML(<no args: exited>) on [HeaderMenuButton ID:countryList_headerMenuButton] @ ISC_Core.js:3031:248
    Canvas.draw(<no args: exited>) on [HeaderMenuButton ID:countryList_headerMenuButton] @ ISC_Core.js:2977:220
    StatefulCanvas.draw(<no args: exited>) on [HeaderMenuButton ID:countryList_headerMenuButton] @ ISC_Foundation.js:220:431
    Canvas.addPeer(<no args: exited>) on [Button ID:isc_Button_230] @ ISC_Core.js:3203:61
    ListGrid._showHeaderMenuButton(<no args: exited>) on[ListGrid ID:countryList] @ ISC_Grids.js:2810:221
    _3.handleMouseOver(<no args: exited>) on [Button ID:isc_Button_230] @ ISC_Grids.js:2698:234
    [c]EventHandler.bubbleEvent(<no args: exited>) on [Class EventHandler] @ ISC_Core.js:2436:89
    [c]EventHandler.handleEvent(<no args: exited>) on [Class EventHandler] @ ISC_Core.js:2139:351
    EventHandler.__handleMouseMove(<no args: exited>) on [Class EventHandler] @ ISC_Core.js:2228:19
    EventHandler._handleMouseMove(<no args: exited>) on [Class EventHandler] @ ISC_Core.js:2212:244
    [c]EventHandler.handleMouseMove(<no args: exited>) on [Class EventHandler] @ ISC_Core.js:2212:11
    [c]EventHandler.dispatch(_1=>[c]EventHandler.handleMouseMove(), _2=>[object MouseEvent]) on [Class EventHandler] @ ISC_Core.js:2531:122
    HTMLDocument.eval(event=>[object MouseEvent]) @ [no file]:3:123

isc.ListGrid.create({
    ID: "countryList",
    width:500, height:224, alternateRecordStyles:true,
    data: countryData,
    fields:[
        {name:"countryCode", title:"Flag", width:40, type:"image", imageURLPrefix:"flags/16/", imageURLSuffix:".png"},
        {name:"countryName", title:"Country", canDragResize: false},
        {name:"capital", title:"Capital"},
        {name:"continent", title:"Continent"}
    ],
    canResizeFields: true
})

Best regards
Blama

[Blama]

Also only after the exception (?) you'll get these warnings for hovering some of the headers (country and continent only(?)):

18:36:53.585:MMV9:WARN:drawing:countryList_headerMenuButton:draw() called on widget with current drawn state: drawingHandle, ignoring.
    Canvas.readyToDraw() on [HeaderMenuButton ID:countryList_headerMenuButton] @ ISC_Core.js:2955:707
    Canvas.draw(_1=>undef) on [HeaderMenuButton ID:countryList_headerMenuButton] @ ISC_Core.js:2967:145
    StatefulCanvas.draw(_1=>undef, _2=>undef, _3=>undef) on [HeaderMenuButton ID:countryList_headerMenuButton] @ ISC_Foundation.js:220:431
    Canvas.addPeer(_1=>[HeaderMenuButton ID:countryList_headerMenuButton], _2=>undef, _3=>undef, _4=>undef) on [Button ID:isc_Button_234] @ ISC_Core.js:3203:61
    ListGrid._showHeaderMenuButton(_1=>[Button ID:isc_Button_234]) on[ListGrid ID:countryList] @ ISC_Grids.js:2810:221
    _3.handleMouseOver(_13=>Obj) on [Button ID:isc_Button_234] @ ISC_Grids.js:2698:234
    [c]EventHandler.bubbleEvent(_1=>[Button ID:isc_Button_234], _2=>"mouseOver", _3=>undef, _4=>null, _5=>undef) on [Class EventHandler] @ ISC_Core.js:2436:89
    [c]EventHandler.handleEvent(_1=>[Button ID:isc_Button_234], _2=>"mouseOver", _3=>undef, _4=>undef) on [Class EventHandler] @ ISC_Core.js:2139:351
    EventHandler.__handleMouseMove(_1=>[object MouseEvent], _2=>Obj) on [Class EventHandler] @ ISC_Core.js:2228:19
    EventHandler._handleMouseMove(_1=>[object MouseEvent], _2=>Obj) on [Class EventHandler] @ ISC_Core.js:2212:244
    [c]EventHandler.handleMouseMove(_1=>[object MouseEvent]) on [Class EventHandler] @ ISC_Core.js:2212:11
    [c]EventHandler.dispatch(_1=>[c]EventHandler.handleMouseMove(), _2=>[object MouseEvent]) on [Class EventHandler] @ ISC_Core.js:2531:122
    HTMLDocument.eval(event=>[object MouseEvent]) @ [no file]:3:123

Best regards
Blama

[Isomorphic]

Thanks for the notification
This issue has been taken care of. Please try the next nightly build (dated April 14 or above)

Regards
Isomorphic Software

[Blama]

Hi Isomorphic,

I can see this is fixed using v12.1p_2020-04-15.

Thank you & Best regards
Blama