[Bug]: KryptonForm background colour

[PWagner1]

As reported by @almendieta in #1300

[sic] ... After try Canary, now Krypton forms shows a steady black background, and some controls appear as a mosaic in one of them. Any idea about the reason?

Happens in current alpha too.

[PWagner1]

From #1300

[Smurf-IV]

Hi @almendieta
I am not able to replicate this using the Code base from V80..

Win 10 22H2
VS 2022 17.9.4

[Smurf-IV]

@almendieta
Also Cannot replicate using the nuget package for V70.

• Start new Winforms project - Set to net60
• Add nuget package
• Build to check
• Change to use KryptonForm
• Check Deisnger - Still okay
• run - Still okay ??

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>WinExe</OutputType>
    <TargetFramework>net6.0-windows</TargetFramework>
    <StartupObject>Sub Main</StartupObject>
    <UseWindowsForms>true</UseWindowsForms>
    <MyType>WindowsForms</MyType>
  </PropertyGroup>

  <ItemGroup>
    <Import Include="System.Data" />
    <Import Include="System.Drawing" />
    <Import Include="System.Windows.Forms" />
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Krypton.Toolkit" Version="70.22.11.312" />
  </ItemGroup>

  <ItemGroup>
    <Compile Update="My Project\Application.Designer.vb">

[Smurf-IV]

When I do change the back colour then it is reflected in th designer and the app as expected:

[PWagner1]

When I do change the back colour then it is reflected in th designer and the app as expected:

@Smurf-IV Is BackColor in either VisualForm or KryptonForm assigned a default value, or is it just Color.Empty?

[PWagner1]

@Smurf-IV Works correctly in the January 2024 canary build...

Bug starts with nightly build >= 45, from 14/02/2024. The build .44, from 13/02/2024 is ok.

[PWagner1]

Something's not right here...

[Smurf-IV]

@Smurf-IV Works correctly in the January 2024 canary build...

Bug starts with nightly build >= 45, from 14/02/2024. The build .44, from 13/02/2024 is ok.

Reproed with build 45:

• Just resize the form in the desinger:
  

[Smurf-IV]

@Wagnerp It's between these 2 commits....

[PWagner1]

@Wagnerp It's between these 2 commits....

@Smurf-IV Have a look at this PR.

[Smurf-IV]

Yup..

It's this:

You've overridden the default, therefore no background painting is going to happen !

Will test and fix in a moment.

Edit: That was it !!

[PWagner1]

Yup..

It's this: You've overridden the default, therefore no background painting is going to happen !

Will test and fix in a moment.

Edit: That was it !!

Must have been something I forgot to remove when removing the other Acrylic stuff