Completed
Last Updated: 03 Oct 2019 11:40 by ADMIN
Release R3 2019 SP1 (LIB 2019.3.1007)
Created by: Kashif
Comments: 2
Category: Form
Type: Bug Report
1

Dear Admins.

I'm developing an application which have Parent (MDI) and some child forms.

Using Telerik UI for WinForms R2 2019 SP1.

Code for Opening the Form.

01.private void MnuItemSuppliers_Click(object sender, EventArgs e)
02.{
03.    if (!IsFormOpen(typeof(frmSupplierList)))
04.    {
05.        CloseChildForm();
06.        frmSupplierList m_frmListSupplier = new frmSupplierList
07.        {
08.            Width = this.Width,
09.            Height = this.Height,
10.            MdiParent = this,
11.            MaximizeBox = false,
12.            MinimizeBox = false,
13.            ControlBox = false,
14.            WindowState = FormWindowState.Maximized
15.        };
16.        m_frmListSupplier.Show();
17.    }
18.}

 

But Still i can see the ControlBox and Minimize and Maximize Buttons on the Top right Corner. 

Image Attached.

When i Use the Same Coding and Properties using Standard Windows Forms. It behave like as required.

Please help what is wrong with this.

Completed
Last Updated: 23 May 2019 13:19 by ADMIN
Release R2 2019 SP1 (LIB 2019.2.527)
ADMIN
Created by: Dess | Tech Support Engineer, Sr.
Comments: 0
Category: Form
Type: Bug Report
5
A possible workaround is to set the RadControl.EnableDpiScaling property to false.
static class Program
{
    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main()
    {
        RadControl.EnableDpiScaling = false;

        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new RadForm1());
    }
}

Another workaround is to mark the application as DPI-aware: https://docs.telerik.com/devtools/winforms/telerik-presentation-framework/dpi-support
Completed
Last Updated: 22 May 2019 10:59 by ADMIN
Release R1 2018
Completed
Last Updated: 16 May 2019 06:03 by ADMIN

Hi

Please note that I have installed trial version of telerik ui winforms desktop. The problem now is when I open the child page it always takes minimum 4 seconds to load.The child page just contains the radgridview and loads just 6000records.

We are not satisfying with this performance.

Based on the support we will decide to purchase this tool.

We need your assistance asap.

1.download and install the telerik trial version for ui winforms for desktop latest version 2019. 219.

2.open new project with blank template.

3.create radform and set Radform1 as mdi form. And open a child page from this..

CHild page takes 4 seconds to load. Though child page has only grid view and loads only 6000 records

Thanks

Sathish.

Completed
Last Updated: 17 Apr 2019 10:50 by ADMIN
ADMIN
Created by: Dess | Tech Support Engineer, Sr.
Comments: 2
Category: Form
Type: Bug Report
0
Description: Text alignment of the title bar caption can not be changed. 

this.FormElement.TitleBar.TitlePrimitive.Alignment = ContentAlignment.MiddleCenter;
Completed
Last Updated: 25 Jan 2019 07:50 by ADMIN
ADMIN
Created by: Dimitar
Comments: 1
Category: Form
Type: Bug Report
3
Use attached to reproduce.
Case 1 - the initial scaling is not correct and the showing dilog1 results in a different DPI each time. 
Case 2 - the AllowTheming property disabled the scaling - see dialog 2.

Workaround:

this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Dpi;
this.AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F);

public class MyRadForm : RadForm
{
    protected override void HandleDpiChanged()
    {
        if (TelerikHelper.IsWindows10CreatorsUpdateOrHigher)
        {
            return;
        }

        base.HandleDpiChanged();
    }

}

Completed
Last Updated: 25 Jun 2018 06:46 by Dimitar
To reproduce: Create a RadForm, select a material theme from the ToolBox, and apply the theme to the Form. Set the size of the Form to anything simple like (300, 300) and then save and close out the Form. When you reopen the same Form it will grow to (304, 302).
Please refer to the attached gif file.

Workaround: set the size at run time.
Completed
Last Updated: 02 Mar 2018 09:47 by ADMIN
To reproduce:
- Set the icon of the form.
- Set the FormBorderStyle to FixedToolWindow.
- The default icon is displayed in the taskbar.

Workaround:
public RadForm2()
{
    InitializeComponent();
    this.ShowIcon = true;
  
}
protected override void OnShown(EventArgs e)
{
    base.OnShown(e);
    this.FormElement.TitleBar.IconPrimitive.Visibility = ElementVisibility.Collapsed;
}
Completed
Last Updated: 20 Feb 2018 13:55 by ADMIN
ADMIN
Created by: Dess | Tech Support Engineer, Sr.
Comments: 2
Category: Form
Type: Bug Report
1
To reproduce:

1. Create a RadForm - Form1
2. Change its BackColor at design time
3. Create another RadForm - Form2 
4. Open it at design time. It is expected to have the BackColor coming from the parent form.

Workaround: Set the color in the form's constructor instead of at design time.
Completed
Last Updated: 15 Feb 2018 07:48 by ADMIN
Use attached to reproduce. This was working in version 2017.1.221

Workaround:
private void Instance_LocationChanged(object sender, EventArgs e)
{
    var box = sender as RadMessageBoxForm;
    box.Location = new Point((this.Location.X + this.Width / 2) - (box.Width/2), (this.Location.Y + this.Height / 2 )- (box.Height/2));  
    
}
Completed
Last Updated: 15 Dec 2017 12:35 by ADMIN
How to reproduce: create a DPI-aware application and set the AllowAero property of the ribbon form to false, the titlebar will not be themed

Workaround: override the ScaleControl method of in the RadRibbonForm instance in the project
Protected Overrides Sub ScaleControl(ByVal factor As SizeF, ByVal specified As BoundsSpecified)
    MyBase.ScaleControl(factor, specified)

    If Me.HasOwnToolbar AndAlso Me.AllowTheming AndAlso Not Me.IsDesignMode AndAlso Me.IsInitialized Then
        Me.AllowTheming = False
    End If
End Sub
Completed
Last Updated: 30 Oct 2017 06:39 by ADMIN
Workaround:   
  Sub New()
         
        InitializeComponent()
        AddHandler RadMessageBox.Instance.LocationChanged, AddressOf MsgLocationChanged
    End Sub
    Private Sub MsgLocationChanged(sender As Object, e As EventArgs)
        RadMessageBox.Instance.Location = New Point(Me.Location.X + Me.Width / 2 - RadMessageBox.Instance.Width / 2, _
                                                    Me.Location.Y + Me.Height / 2)
    End Sub
Completed
Last Updated: 27 Sep 2017 09:40 by ADMIN
 Use attached to reproduce.

The exception message: "A circular control reference has been made. A control cannot be owned by or parented to itself.".

Workaround:
Do not specify the owner when showing the message box.
Completed
Last Updated: 14 Sep 2017 09:40 by Chian Yuh
Workaround:
 Sub New()

     InitializeComponent()

     AddHandler RadMessageBox.Instance.LocationChanged, AddressOf MsgLocationChanged
 End Sub
 Private Sub RadTreeView1_NodeMouseClick(sender As Object, e As Telerik.WinControls.UI.RadTreeViewEventArgs) Handles RadTreeView1.NodeMouseClick
     If RadMessageBox.Show(Me, String.Format("Change Project to {0}{1}{0}?", Chr(34), e.Node.Text), "Change Project", MessageBoxButtons.YesNo, _
                           RadMessageIcon.Question, MessageBoxDefaultButton.Button1) = Windows.Forms.DialogResult.Yes Then
     End If

 End Sub

 Private Sub MsgLocationChanged(sender As Object, e As EventArgs)
     RadMessageBox.Instance.Location = New Point(Me.Location.X + Me.Width / 2, Me.Location.Y + Me.Height / 2)
 End Sub

Completed
Last Updated: 15 Aug 2017 11:03 by ADMIN
Workaround: change all RadForms to inherit the following custom base form
public class RadFormBase : RadForm
{
    protected override void OnLoad(EventArgs e)
    {
        if (this.IsDesignMode)
        {
            this.BackColor = Color.Empty;
        }

        base.OnLoad(e);
    }

    public override Color BackColor
    {
        get
        {
            return this.ElementTree.RootElement.BackColor;
        }
        set
        {
            if (value == Color.Empty)
            {
                this.ElementTree.RootElement.ResetValue(VisualElement.BackColorProperty, ValueResetFlags.Local);
            }
            else
            {
                this.ElementTree.RootElement.BackColor = value;
            }
        }
    }
}
Completed
Last Updated: 15 Aug 2017 10:54 by Thomas
ADMIN
Created by: Dess | Tech Support Engineer, Sr.
Comments: 1
Category: Form
Type: Bug Report
1
To reproduce: run the attached sample project and refer to the screenshot.

Workaround: 
((TextPrimitive)this.FormElement.TitleBar.CaptionElement).UseCompatibleTextRendering=true; 
or set the RadForm.AllowTheming property to false.
Completed
Last Updated: 15 Aug 2017 10:54 by ADMIN
Steps to reproduce: 
1. Create an application with RadForm and few controls under .Net 4.7 
2. Start the application on 4K monitor (primary screen) with high DPI (200-percent scale)
3. The form is not scaled correctly. Windows do not send the message that the scale factor is changed. 

The issue is observed when the form is initially starting on high DPI (125-percent or higher). 

Completed
Last Updated: 15 Aug 2017 10:28 by ADMIN
Steps to reproduce:

1. Build an application targeting x64 platform.

2. Setup your monitors such that one has negative coordinates.

3. Run the application and move a form to the negative coordinates space.

4. You will see a System.OverflowException.
Completed
Last Updated: 11 Jul 2017 13:03 by ADMIN
How to reproduce:
public partial class RadForm1 : RadForm
{
    public RadForm1()
    {
        InitializeComponent();

        this.AllowTheming = false;

        this.FormBorderStyle = FormBorderStyle.FixedSingle;
    }
}

Workaround: 
public partial class RadForm1 : RadForm
{
    public RadForm1()
    {
        InitializeComponent();

        this.AllowTheming = false;

        this.FormBorderStyle = FormBorderStyle.FixedSingle;
    }

    protected override FormControlBehavior InitializeFormBehavior()
    {
        return new MyRadFormBehavior(this, true);
    }
}

public class MyRadFormBehavior : RadFormBehavior
{
    public MyRadFormBehavior(IComponentTreeHandler treeHandler, bool shouldCreateChildren)
        : base(treeHandler, shouldCreateChildren)
    { }

    public override bool HandleWndProc(ref System.Windows.Forms.Message m)
    {
        BindingFlags bindingFlags = BindingFlags.Instance | BindingFlags.NonPublic;
        if (m.Msg == NativeMethods.WM_NCHITTEST)
        {
            typeof(RadFormBehavior).GetMethod("OnWMNCHittest", bindingFlags).Invoke(this, new object[] { m });
            return true;
        }

        if (!this.AllowTheming)
        {
            return false;
        }

        return base.HandleWndProc(ref m);
    }
}
Completed
Last Updated: 11 Jul 2017 13:02 by ADMIN
How to reproduce:
Add a StatusStrip to the form and set the FormBorderStyle to FixedSingle, you will notice that the form can be resized using the sizing grip of the status strip

Workaround:
public partial class Form2 : RadForm
{
    public Form2()
    {
        InitializeComponent();

        this.FormBorderStyle = FormBorderStyle.FixedSingle;
    }

    protected override FormControlBehavior InitializeFormBehavior()
    {
        return new CustomRadFormBehavior(this, true);
    }
}

public class CustomRadFormBehavior : RadFormBehavior
{
    public CustomRadFormBehavior(IComponentTreeHandler treeHandler, bool shouldCreateChildren)
        : base(treeHandler, shouldCreateChildren)
    { }

    public override bool HandleWndProc(ref Message m)
    {
        if ((m.Msg) == NativeMethods.WM_NCLBUTTONDOWN)
        {

            Point screenLocation = new Point(m.LParam.ToInt32());
            Point location = this.GetMappedWindowPoint(screenLocation);

            RadElement itemUnderMouse = this.Form.ElementTree.GetElementAtPoint(location);
            MouseEventArgs args = new MouseEventArgs(Control.MouseButtons, 1, location.X, location.Y, 0);

            bool isFixed = false;
            if (this.Form != null &&
                this.Form.FormBorderStyle == FormBorderStyle.Fixed3D ||
                this.Form.FormBorderStyle == FormBorderStyle.FixedDialog ||
                this.Form.FormBorderStyle == FormBorderStyle.FixedSingle ||
                this.Form.FormBorderStyle == FormBorderStyle.FixedToolWindow)
            {
                isFixed = true;
            }

            if (isFixed &&
                itemUnderMouse != null &&
                itemUnderMouse.Enabled &&
                !object.ReferenceEquals(itemUnderMouse, (this.Form.RootElement.Children[0] as RadFormElement).TitleBar))
            {
                return true;
            }
        }

        return base.HandleWndProc(ref m);
    }
}

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