Questions on UI for WinForms Forum

2 answers

169 views

TabStrip not always reflecting ActivateWindow() change

Hello,

I am tasked to replicate the New Tab functionality of Google Chrome. I have attached sample code below that mostly accomplishes this. However there is still one bug that I am unable to fix, and it is related to the RadDock tabstrip not redrawing after ActivateWindow() is called.

To reproduce this problem, please run the following code. You should see a tab named "New Tab 0" and a mini-tab to its right, which will create additional new tabs if you click on it. Click the mini-tab so you have two named tabs. Then, right-click on the right-most named tab ("New Tab 1", unless you created more) and select "Floating" to pop it out. Here is where the problem happens. We never want the MiniTab to have focus, so the method MiniTabGotFocus() will have been called, which activates the window to its left. However, the tabs are not redrawn to reflect this. BUT, if you click on Form1 parent dialog to give it focus (or close that popped out window), the tabs will immediately redraw correctly. So the window to the left was in fact Activated, but the tabs do not reflect this until Form1 has focus again.

Does this make sense? I have tried to Invalidate() the TabStrip but that does not force it to redraw. I can only cause it to redraw correctly by clicking on the Form1 parent dialog to give it focus. What I would like help on is how to force the TabStrip to redraw.

This is using Telerik v2011-8-31.

Thanks,

Michelle

using System;

using System.Drawing;

using System.Linq;

using System.Windows.Forms;

using Telerik.WinControls.UI.Docking;

namespace WindowsFormsApplication1

{

public class Form1 : Form

{

#region Windows Form Designer generated code

/// <summary>

/// Required designer variable.

/// </summary>

private System.ComponentModel.IContainer components;

/// <summary>

/// Clean up any resources being used.

/// </summary>

/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>

protected override void Dispose(bool disposing)

{

if (disposing && (components != null))

{

components.Dispose();

}

base.Dispose(disposing);

}

/// <summary>

/// Required method for Designer support - do not modify

/// the contents of this method with the code editor.

/// </summary>

private void InitializeComponent()

{

this.chartingDock = new Telerik.WinControls.UI.Docking.RadDock();

((System.ComponentModel.ISupportInitialize)(this.chartingDock)).BeginInit();

this.chartingDock.SuspendLayout();

this.SuspendLayout();

//

// chartingDock

//

this.chartingDock.Dock = System.Windows.Forms.DockStyle.Fill;

this.chartingDock.Location = new System.Drawing.Point(0, 0);

this.chartingDock.Name = "chartingDock";

this.chartingDock.Padding = new System.Windows.Forms.Padding(5);

this.chartingDock.RootElement.MinSize = new System.Drawing.Size(25, 25);

this.chartingDock.RootElement.Padding = new System.Windows.Forms.Padding(5);

this.chartingDock.Size = new System.Drawing.Size(573, 397);

this.chartingDock.SplitterWidth = 4;

this.chartingDock.TabIndex = 0;

this.chartingDock.TabStop = false;

this.chartingDock.Text = "chartingDock";

//

// Form1

//

this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);

this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;

this.ClientSize = new System.Drawing.Size(573, 397);

this.Controls.Add(this.chartingDock);

this.IsMdiContainer = true;

this.Name = "Form1";

this.Text = "Form1";

((System.ComponentModel.ISupportInitialize)(this.chartingDock)).EndInit();

this.chartingDock.ResumeLayout(false);

this.ResumeLayout(false);

}

#endregion

private RadDock chartingDock;

public Form1()

{

InitializeComponent();

chartingDock.AutoDetectMdiChildren = true;

chartingDock.DockWindowClosed += ChartingDockDockWindowClosed;

chartingDock.DockWindowClosing += ChartingDockDockWindowClosing;

chartingDock.TransactionCommitted += ChartingDockTransactionCommitted;

chartingDock.DockWindowAdded += ChartingDockDockWindowAdded;

chartingDock.GetDefaultDocumentTabStrip(true).TabStripElement.ItemsChanged += TabStripElement_ItemsChanged;

EnsureNewChartMiniTabExists();

}

private int count;

private void AddTab()

{

AddTab("New Tab " + count++);

}

private void AddTab(string title)

{

var f = new ToolWindow

{

Text = title,

};

if (title == NewChartTabText) f.BackColor = Color.Black;

chartingDock.SetWindowState(f, DockState.TabbedDocument);

}

private const string NewChartTabText = " ";

private DockWindow switchTab;

void ChartingDockDockWindowClosing(object sender, DockWindowCancelEventArgs e)

{

var index = Array.IndexOf(chartingDock.DocumentManager.DocumentArray, e.NewWindow);

switchTab = index == chartingDock.DocumentManager.DocumentArray.Count() - 2 && index > 0

? chartingDock.DocumentManager.DocumentArray[index - 1]

: null;

}

void ChartingDockDockWindowClosed(object sender, DockWindowEventArgs e)

{

if (switchTab != null) chartingDock.ActivateWindow(switchTab);

}

void ChartingDockTransactionCommitted(object sender, RadDockTransactionEventArgs e)

{

EnsureNewChartMiniTabExists();

//for when the only chart is double-clicked to pop out, create a new blank chart

if (chartingDock.DocumentManager.DocumentArray.Where(w => w.Text != NewChartTabText).Count() == 0)

{

AddTab();

}

//if the committed window was the newcharttab, subscribe to the click event

var window = e.Transaction.AssociatedWindows.FirstOrDefault();

if (window != null && window.Text == NewChartTabText)

{

window.TabStripItem.Click -= MiniTabClicked;

window.TabStripItem.Click += MiniTabClicked;

window.GotFocus += MiniTabGotFocus;

}

private void EnsureNewChartMiniTabExists()

{

if (chartingDock.DocumentManager.DocumentArray.Where(w => w.Text == NewChartTabText).Count() == 0)

{

AddTab(NewChartTabText);

}

static void ChartingDockDockWindowAdded(object sender, DockWindowEventArgs e)

{

var window = e.DockWindow as ToolWindow;

if (window == null) return;

DockTabStrip strip = e.DockWindow.DockTabStrip;

if (strip != null)

{

var count = strip.Controls.Count;

var index = e.DockWindow.Text == NewChartTabText ? count - 1 : count - 2;

if (index < 0) index = 0;

strip.Controls.SetChildIndex(e.DockWindow, index);

}

void TabStripElement_ItemsChanged(object sender, Telerik.WinControls.UI.RadPageViewItemsChangedEventArgs e)

{

var window = chartingDock.DocumentManager.DocumentArray.Where(w => w.Text == NewChartTabText).FirstOrDefault() as ToolWindow;

if (window == null) return;

var tabCount = chartingDock.DocumentManager.DocumentArray.Count();

var index = Array.IndexOf(chartingDock.DocumentManager.DocumentArray, window);

if (index >= tabCount - 1) return;

DockTabStrip strip = window.DockTabStrip;

if (strip == null) return;

strip.Controls.SetChildIndex(window, tabCount - 1);

}

private void MiniTabClicked(object sender, EventArgs e)

{

AddTab();

}

private void MiniTabGotFocus(object sender, EventArgs e)

{

var tabCount = chartingDock.DocumentManager.DocumentArray.Count();

if (tabCount < 2) return;

var window = chartingDock.DocumentManager.DocumentArray[tabCount - 2];

chartingDock.ActivateWindow(window);

}

Dock

answered on 07 Jan 2013

4 answers

402 views

Hide default MDI menu

Hi,

I'm using a RadForm as an MDI container and loading child MDI forms into it. I load the child forms in a maximized state but seem to be unable to hide the default MDI menu in the parent form.

The MDI section of the RadForm documentation says:

"When a MDI child Form is maximized, it automatically hides its title bar and the parent form displays a default MDI menu. This menu contains controls can execute the basic window commands on the currently maximized MDI child:"

I would like the "default MDI menu" to be hidden. I will control the windowstate of the child forms myself.

I've tried setting the MinimizeBox and MaximizeBox to false (on the child forms) and also changing the FormBorderStyle, all to no avail.

Any help or advice would be greatly appreciated.

Please see the attached JPG for an illustration.

Many Thanks,

Joe

Form

answered on 07 Jan 2013

2 answers

119 views

GroupBox HeaderText

Hi,

Is there a way where I can override the font size on HeaderText property and remove the borders around the RadGroupbox?

/Hendrik

Buttons, RadioButton, CheckBox, etc

answered on 05 Jan 2013

1 answer

209 views

available skins

Hi,

is there for win forms only the skins

- controldefault
- telerik metro
- telerik metro blue
- office 2010 black, blue, silver
- win7
- breeze
- desert
- hightcontrastblack

available, which are supported too?

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answered on 05 Jan 2013

1 answer

80 views

Unresponsive when deleting with IsSpellCheckingEnabled = true

Hi,

If I enable spellchecking via IsSpellCheckingEnabled =true, when I delete text from the RichTextBox by holding down backspace or the delete key, the RichTextBox seems to pause, and I can't see the characters deleted one by one, and therefore can't tell when to release the delete key.

RichTextBox (obsolete as of Q3 2014 SP1)

answered on 04 Jan 2013

1 answer

144 views

Radgridview not accessible

Hi,

I have a strange situation.
Sometimes when I add a RadGridView to a form in design mode, the RadGridView is not accesible in the code editor.
Steps to recreate problem:
    *    create new project in VS2010
    *    Add form/RadForm (doesn't matter which one, I had problem with both forms)
    *    Add RadGridView to the form via designer, drag and drop on the form.
    *    Go to code editor via F7
    *    Add a method to the form "Public sub test"
    *    Start typing "Radgridview" the code completion doesn't find anything called radgridview.   See attached file.

This does not happen all the time. Anybody had thesame problem?

Kind regards,

Guy

GridView

answered on 04 Jan 2013

2 answers

115 views

Html Import Provider Issue

Hello,

I just upgraded to the latest version of RadControls for Winforms and am noticing an issue with RadRichTextBox and importing HTML.

Attached are screen shots of an HTML imported using the new version vs. the old version. The new looks more like the actual HTML except that the list items have no spacing and are very hard to read. Since I'm generating the HTML at run time I would be fine with a solution that involves changing the HTML only to work better with the new version of the control.

I attempted to attach the HTML file itself but it was not allowed. Instead I have pasted the portion of the html code that causes the issue below.

Thanks

Doug

<ul style="margin-left:20;padding-left:10;margin-top:5;margin-bottom:5">

<li>Web Export: Updated to include watermark markups.</li>

<li

>Web Cases: Added "Check idsService Stations" to Tools menu.  This brings up a grid view of stations currently running idsService (1.0.0.4 or later), their version and last activity times.</

li>

<li>Web Cases: When the form is loaded, a message box is displayed if there are no stations detected running idsService.</li></ul>

RichTextBox (obsolete as of Q3 2014 SP1)

answered on 03 Jan 2013

2 answers

111 views

Appointment canceled

Hi,

From my main form (where scheduler is), I am trying to add new appointment and show edit form like this:

IEvent newAppointment = new CustomAppointment();

newAppointment.Start = Record.RecordStart;

newAppointment.End = DateTime.Now;

// ...

cScheduler.Appointments.Add(newAppointment);

cScheduler.ShowAppointmentEditDialog(newAppointment, false);

The problem is when user click cancel or close button in edit form. After that appointment will be still in collection.
How to check if user cancel appointment and delete it form collection?

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1 answer

704 views

Unable to cast object of type 'Telerik.WinControls.UI.CurrentRowChangedEventArgs' to type 'Telerik.WinControls.UI.Data.PositionChangedEventArgs'.

hello.
i when add a row in multicolumncombo get error below

Unable to cast object of type 'Telerik.WinControls.UI.CurrentRowChangedEventArgs' to type 'Telerik.WinControls.UI.Data.PositionChangedEventArgs'.

i create multicolumncombo in another forms and add rows do not see any error but when woud add rows in multicolumncombo in main form my program eccur error.

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8 answers

819 views

RadTreeView winforms - DataBinding and Images

I am using a BindingList object as my datasource and I would like to use an image list to display images in my treeview. I looked for an ItemDataBound event or something similiar, but I did not see it. I tried to use the DrawNode Event but I would get an error saying that the ImageIndex Property could not be updated because the treeview was in lock mode or something along those lines. How do you suggest adding images when databinding?

Thanks.

Treeview

answered on 03 Jan 2013