Crop button triggers Null Reference Exception

[alessandro-antonelli]

System information:

Version: ImageGlass v9.0.8.1208
Release code: kobe
OS: Microsoft Windows NT 10.0.19045.0 64-bit

To Reproduce

Steps to reproduce the behavior:

1. Open an image with ImageGlass
2. Press "c" or click on the crop button in the toolbar

Expected behavior:

The crop commands are displayed.

Actual behavior:

The following error message is shown:

Error:

Object reference not set to an instance of an object.
----------------------------------------------------

System.NullReferenceException: Object reference not set to an instance of an object.
   at ImageGlass.FrmCrop.OnUpdateHeight(Boolean performUpdate) in D:\_GITHUB\@d2phap\ImageGlass\Source\ImageGlass\Tools\FrmCrop.cs:line 142
   at ImageGlass.FrmCrop.OnDpiChanged(DpiChangedEventArgs e) in D:\_GITHUB\@d2phap\ImageGlass\Source\ImageGlass\Tools\FrmCrop.cs:line 93
   at System.Windows.Forms.Form.WmDpiChanged(Message& m)
   at ImageGlass.UI.ModernForm.WndProc(Message& m) in D:\_GITHUB\@d2phap\ImageGlass\Source\Components\ImageGlass.UI\Forms\ModernForm.cs:line 200
   at System.Windows.Forms.NativeWindow.Callback(HWND hWnd, MessageId msg, WPARAM wparam, LPARAM lparam)

If you click on the button "Continue" each time, the error is displayed again a second time, a third time, a fourth time, a fifth time. Then one last click on "continue" finally causes the crop commands to be displayed as desired.

Screenshots:

Additional context:

Already tried to use "Repair install" in control panel, but it did not solve the issue.

[d2phap]

Hi @alessandro-antonelli
Can you please send a video? I cannot reproduce this issue.

[sdsy888]

Hi @alessandro-antonelli Can you please send a video? I cannot reproduce this issue.

Hi @d2phap , please check the video below

2024-01-19.11-57-29.1.mp4

[d2phap]

Can you check if it's fixed in ImageGlass 9.0.10.201

[alessandro-antonelli]

Still not fixed, but the stack trace in the error message has changed.

Error message before updating:

Version: ImageGlass v9.0.9.1230
Release code: kobe
OS: Microsoft Windows NT 10.0.19045.0 64-bit

---

Error:

Object reference not set to an instance of an object.

System.NullReferenceException: Object reference not set to an instance of an object.
at ImageGlass.FrmCrop.OnUpdateHeight(Boolean performUpdate) in D:_GITHUB@d2phap\ImageGlass\Source\ImageGlass\Tools\FrmCrop.cs:line 142
at ImageGlass.FrmCrop.OnDpiChanged(DpiChangedEventArgs e) in D:_GITHUB@d2phap\ImageGlass\Source\ImageGlass\Tools\FrmCrop.cs:line 93
at System.Windows.Forms.Form.WmDpiChanged(Message& m)
at ImageGlass.UI.ModernForm.WndProc(Message& m) in D:_GITHUB@d2phap\ImageGlass\Source\Components\ImageGlass.UI\Forms\ModernForm.cs:line 200
at System.Windows.Forms.NativeWindow.Callback(HWND hWnd, MessageId msg, WPARAM wparam, LPARAM lparam)

Error message after updating:

Version: ImageGlass v9.0.10.201
Release code: kobe
Magick.NET: Magick.NET Q16-HDRI-OpenMP x64 netstandard21 13.5.0
WebView2 Runtime: 120.0.2210.144
OS: Microsoft Windows NT 10.0.19045.0 64-bit

---

Error:

Object reference not set to an instance of an object.

System.NullReferenceException: Object reference not set to an instance of an object.
at ImageGlass.FrmCrop.ApplyTheme(Boolean darkMode, Nullable`1 style) in D:_GITHUB@d2phap\ImageGlass\Source\ImageGlass\Tools\FrmCrop.cs:line 65
at ImageGlass.FrmCrop.OnDpiChanged(DpiChangedEventArgs e) in D:_GITHUB@d2phap\ImageGlass\Source\ImageGlass\Tools\FrmCrop.cs:line 95
at System.Windows.Forms.Form.WmDpiChanged(Message& m)
at ImageGlass.UI.ModernForm.WndProc(Message& m) in D:_GITHUB@d2phap\ImageGlass\Source\Components\ImageGlass.UI\Forms\ModernForm.cs:line 200
at System.Windows.Forms.NativeWindow.Callback(HWND hWnd, MessageId msg, WPARAM wparam, LPARAM lparam)

[d2phap]

Thanks @alessandro-antonelli for the info, I will try to check again.