Add support for the RadRibbonBars to have their items merged while in MDI mode.
Steps to Reproduce:
Create a new WinForms application targeting .NET 9.
Add a RadStatusStrip
to the main form.
Run the application.
Snap the form to the left or right edge of the screen (using Windows Snap).
Minimize the form.
Restore the form.
Expected Behavior:
The form should maintain its original size and remain fully visible on screen after being restored.
Actual Behavior:
Every time the form is minimized and restored, it increases in height. After a few cycles, the bottom part of the form — including the RadStatusStrip
— becomes hidden behind the Windows taskbar (Start menu).
Additional Info:
The issue only occurs when a RadStatusStrip
is added to the form.
The issue does not occur when using a standard StatusStrip
from WinForms.
The problem occurs consistently and can be reproduced easily.
Tested both in debug mode and with a compiled executable.
Attachments:
Screenshots (before and after restore).
Sample reproduction project (if needed).
This is only repeated in windows 10
This issue starts happening as of Q2 (2025.2.520) version.
Workaround: override SetClientSizeCore() inside of inherited RadForm
public partial class RadForm2 : RadForm1
{
protected override void SetClientSizeCore(int x, int y)
{
base.SetClientSizeCore(x, y);
if ((!this.IsLoaded || !this.IsHandleCreated) &&
this.IsInitialized)
{
MethodInfo mi = typeof(Form).GetMethod("SetClientSizeCore", BindingFlags.NonPublic | BindingFlags.Instance);
if (mi != null)
{
IntPtr ptr = mi.MethodHandle.GetFunctionPointer();
Action<int, int> baseSetClientSizeCore = (Action<int, int>)Activator.CreateInstance(
typeof(Action<int, int>), this, ptr);
baseSetClientSizeCore.Invoke(x, y);
}
}
}
}
When enabling AutoSize on all RadTextBoxControl elements on a Form and the Form has its AutoSize porperty set to True, then the size of the TextBoxElement inside the TextBox autosizes wrong. See the pictures. This happens at runtime and under specific conditions also at design time.
If you change Form.AutoSize to False OR at least ONE RadTextBoxControl to AutoSize = False then everything works as normal. But if ALL RadTextBoxControl has AutoSize to True and The Form.AutoSize is True, then this happens.
Office 2019:
Windows 11 Compact:
When trying to open the QuickStart solution from
C:\Program Files (x86)\Progress\Telerik UI for WinForms 2025 Q1\Examples
installation folder, the following error appears:
Visual Studio 2022 crashes when working with a solution containing two WinForms projects:
Steps to Reproduce:
Expected Result:
Visual Studio should smoothly switch between code and designer views without issues.
Actual Result:
Visual Studio freezes and crashes after switching back to the WinForms designer in Project 2.
Environment:
Additional Notes:
When the RadPropertyGrid is in group scenario and we expand more property items, the scroll value is incorrect.
Workaround: set UseCompatibleTextRendering to true.