Questions on UI for WinForms Forum

1 answer

188 views

I have a Problem

Click the minimize button, then click the maximize button, list item is not displayed.

p1.jpg is normal .
p2 is click the minize button .

private void Form1_Load(object sender, EventArgs e)

{

this.radListView1.ItemSize = new Size(200, 300);

this.radListView1.AllowArbitraryItemHeight = true;

this.radListView1.ItemSpacing = 5;

this.radListView1.EnableKineticScrolling = false;

this.radListView1.ListViewElement.ViewElement.ViewElement.Margin = new Padding(1, 1, 0, 0);

this.radListView1.ListViewElement.ViewElement.Orientation = Orientation.Vertical;

this.radListView1.AllowEdit = false;

this.radListView1.Width = 210;

for (int i = 0; i < 5; i++)

{

ListViewDataItem t = new ListViewDataItem();

t.Tag = new string[] {"Name " + i.ToString(), "23", "uiui"};

this.radListView1.Items.Add(t);

}

private void radListView1_VisualItemCreating(object sender, ListViewVisualItemCreatingEventArgs e)

{

e.VisualItem = new CustomVisualItem();

}

namespace TestListView

{

internal class CustomVisualItem : IconListViewVisualItem

{

private LightVisualElement imageElement;

private LightVisualElement titleElement;

private LightVisualElement artistElement;

private StackLayoutPanel stackLayout;

// the base image of the radar

// this saves time/cycles, b/c we only have to draw the

// background of the radar once (and update it as necessary)

Image _baseImage;

// the final rendered image of the radar

Image _outputImage;

// the azimuth of the radar

int _az = 0;

// some internally used points for drawing the fade

// of the radar scanline

PointF _pt = new PointF(0F, 0F);

PointF _pt2 = new PointF(1F, 1F);

PointF _pt3 = new PointF(2F, 2F);

Color _topColor = Color.FromArgb(0, 120, 0);

Color _bottomColor = Color.FromArgb(0, 40, 0);

Color _lineColor = Color.FromArgb(0, 255, 0);

int _size = 200;

private Timer _timer;

// do draw the scanline or not to draw the scanline?

bool _scanLine = false;

public CustomVisualItem()

{

_timer = new Timer();

_timer.Tick += new EventHandler(_timer_Tick);

// _timer.Interval = 40;

_timer.Interval = 625;

CreateBaseImage();

DrawScanLine = false;

Draw();

_timer.Enabled = false;

}

public PointF AzEl2XY(int azimuth, int elevation)

{

// rotate coords... 90deg W = 180deg trig

double angle = (270d + (double)azimuth);

// turn into radians

angle *= 0.0174532925d;

double r, x, y;

// determine the lngth of the radius

r = (double)_size * 0.5d;

r -= (r * (double)elevation / 90);

x = (((double)_size * 0.5d) + (r * Math.Cos(angle)));

y = (((double)_size * 0.5d) + (r * Math.Sin(angle)));

return new PointF((float)x, (float)y);

}

void _timer_Tick(object sender, EventArgs e)

{

// increment the azimuth

if (DrawScanLine)

{

_az++;

// reset the azimuth if needed

// if not, this will cause an OverflowException

if (_az >=360)

{

_az = 0;

DrawScanLine = false;

}

// update the fade path coordinates

_pt = AzEl2XY(_az, 0);

_pt2 = AzEl2XY(_az - 20, 0);

_pt3 = AzEl2XY(_az - 10, -10);

// redraw the output image

Draw();

}

public bool DrawScanLine

{

get

{

return _scanLine;

}

set

{

_scanLine = value;

}

private void CreateBaseImage()

{

// create the drawing objects

Image i = new Bitmap(_size, _size);

Graphics g = Graphics.FromImage(i);

Pen p = new Pen(_lineColor);

// set a couple of graphics properties to make the

// output image look nice

g.CompositingQuality = CompositingQuality.HighQuality;

g.InterpolationMode = InterpolationMode.Bicubic;

g.SmoothingMode = SmoothingMode.AntiAlias;

// draw the background of the radar

g.FillEllipse(new LinearGradientBrush(new Point((int)(_size / 2), 0), new Point((int)(_size / 2), _size - 1), _topColor, _bottomColor), 0, 0, _size - 1, _size - 1);

// release the graphics object

g.Dispose();

// update the base image

_baseImage = i;

}

/// <summary>

/// Draws the output image and fire the event caller for ImageUpdate

/// </summary>

void Draw()

{

// create a copy of the base image to draw on

Image i = (Image)_baseImage.Clone();

// create the circular path for clipping the output

Graphics g = Graphics.FromImage(i);

GraphicsPath path = new GraphicsPath();

path.FillMode = FillMode.Winding;

path.AddEllipse(-1F, -1F, (float)(_size + 1), (float)(_size + 1));

g.Clip = new Region(path);

g.CompositingQuality = CompositingQuality.HighQuality;

g.InterpolationMode = InterpolationMode.Bicubic;

g.SmoothingMode = SmoothingMode.AntiAlias;

g.Dispose();

_outputImage = i;

this.imageElement.Image = _outputImage;

}

protected override void CreateChildElements()

{

base.CreateChildElements();

stackLayout = new StackLayoutPanel();

stackLayout.Orientation = System.Windows.Forms.Orientation.Vertical;

imageElement = new LightVisualElement();

imageElement.DrawText = false;

imageElement.ImageLayout = System.Windows.Forms.ImageLayout.Zoom;

imageElement.StretchVertically = false;

imageElement.Margin = new System.Windows.Forms.Padding(10, 5, 10, 5);

stackLayout.Children.Add(imageElement);

titleElement = new LightVisualElement();

titleElement.TextAlignment = ContentAlignment.MiddleLeft;

titleElement.Margin = new Padding(10, 5, 10, 5);

titleElement.Font = new System.Drawing.Font("Segoe UI", 12, FontStyle.Bold, GraphicsUnit.Point);

titleElement.Text = "0";

stackLayout.Children.Add(titleElement);

artistElement = new LightVisualElement();

artistElement.TextAlignment = ContentAlignment.MiddleLeft;

artistElement.Margin = new Padding(10, 5, 10, 5);

artistElement.Font = new System.Drawing.Font("Segoe UI", 9, FontStyle.Bold | FontStyle.Italic,GraphicsUnit.Point);

artistElement.ForeColor = Color.FromArgb(255, 114, 118, 125);

stackLayout.Children.Add(artistElement);

this.Children.Add(stackLayout);

this.Padding = new Padding(5);

this.Shape = new RoundRectShape(3);

this.BorderColor = Color.FromArgb(255, 110, 153, 210);

this.BorderGradientStyle = GradientStyles.Solid;

this.DrawBorder = true;

this.DrawFill = true;

this.BackColor = Color.FromArgb(255, 230, 238, 254);

this.GradientStyle = GradientStyles.Solid;

}

protected override void SynchronizeProperties()

{

this.imageElement.Image = _outputImage;

this.titleElement.Text = Convert.ToString(((string[])this.Data.Tag)[0]);

}

protected override SizeF MeasureOverride(SizeF availableSize)

{

SizeF measuredSize = base.MeasureOverride(availableSize);

this.stackLayout.Measure(measuredSize);

return measuredSize;

}

protected override SizeF ArrangeOverride(SizeF finalSize)

{

base.ArrangeOverride(finalSize);

this.stackLayout.Arrange(new RectangleF(PointF.Empty, finalSize));

return finalSize;

}

help me!
thanks!!!

ListView

answered on 20 Jul 2012

14 answers

1.6K+ views

Disable cell highlighting/row-only selection

I'd like to be able to use the GridView control to display elements of the data using the HtmlViewDefinition. I have three cells, one of which is on the first "line", and the other two are below it. When I display the data in the Grid, if I click on a "cell", it is highlighted in one color(orange), while the row itself is highlighted in another(light yellow). If I select another column, it goes to light yellow.

How do I force the highlighting to take effect on the entire row?
How do I allow someone to hold down the Control button and "deselect" that row, thus removing the highlighting?

Basically what I'm looking for is a way to simply display the data, and when they click on the row, I'll use a handle to determine the row ID to use to edit the row using another window. The data is far too complicated to edit directly in a grid.

Thanks in advance!

GridView

answered on 20 Jul 2012

4 answers

261 views

BackStage View Scrolling

I've found that if the number of items in the backstage item container is greater than the viewable area of the form, the items simply diappear from view and are inaccessible. I've also noticed that "arrowing" through the pageview items is limited to only the items between the group headers. Is it possible to add "scrolling ability" to the stripview item container of the backstage pageview so that all of my pageview items are accessible? If not, any suggestions for another solution to this dilemma?

thanks

PageView

answered on 20 Jul 2012

1 answer

233 views

problem with UseCompatibleTextRendering

Hi telerik development's team !

Now I'm using Telerik Control Q1 2012 (version 2012.1.12.215) and VS 2010, and I have a problem.
I declared attribute for GridView in OnLoad envent like the below code :
"this.UseCompatibleTextRendering = false;"
I run debug solution and the GridView in form like the attached image.
If you know this error, please tell me the solution.

Best regard !

GridView

answered on 20 Jul 2012

1 answer

101 views

AutoCompleteBox Strange Behavior

To test this, I've added a RadAutoCompleteBox to a form in a new project and am using default settings. (No autocompletesource)

The problem is that under certain conditions, manually adding a new item does not work in specific locations.

I've tested and recorded each broken case from 1 to 6 items, refer to the attached image. The "yes" and "no" represent whether or not it is possible to manually insert an item at that position. As an example of this happening in the actual control (also pictured in the attached image), if you populate an AutoCompleteControl with three items and then try inserting an x at the beginning, pressing the semi-colon key will simply do nothing rather than adding a new item called x.

I noticed this bug in multiline mode as well, although I'm not sure whether or not the cases differ.

Thank you for your time.

Edit: Also, it seems that autoCompleteBox.Clear() does not work in the OnCollectionChanged event. Is this intended functionality?

AutoCompleteBox

answered on 19 Jul 2012

4 answers

225 views

Closing last window with middle clicking the document tab throws an exception

Good afternoon Telerik team :)

I've been testing the new version of Telerik's RadDock control (2012 Q1) and I seem to have found a problem when closing the last document by middle clicking its tab.

An Unhandled null reference exception is thrown with the following stack trace:

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
at Telerik.WinControls.ComponentInputBehavior.OnMouseUp(MouseEventArgs e)
at Telerik.WinControls.RadControl.OnMouseUp(MouseEventArgs e)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at Telerik.WinControls.RadControl.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

************** Loaded Assemblies **************
mscorlib
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.239 (RTMGDR.030319-2300)
CodeBase: file:///C:/WINDOWS/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll
----------------------------------------
RadDockPRoblem
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/Projects/RadDockProblem/bin/Debug/RadDockPRoblem.exe
----------------------------------------
System.Windows.Forms
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.235 built by: RTMGDR
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System.Drawing
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.1 built by: RTMRel
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.232 built by: RTMGDR
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Configuration
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.1 (RTMRel.030319-0100)
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Xml
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.225 built by: RTMGDR
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
Telerik.WinControls.UI
Assembly Version: 2012.1.12.215
Win32 Version: 2012.1.12.0215
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Telerik.WinControls.UI/2012.1.12.215__5bb2a467cbec794e/Telerik.WinControls.UI.dll
----------------------------------------
Telerik.WinControls.RadDock
Assembly Version: 2012.1.12.215
Win32 Version: 2012.1.12.0215
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Telerik.WinControls.RadDock/2012.1.12.215__5bb2a467cbec794e/Telerik.WinControls.RadDock.dll
----------------------------------------
Telerik.WinControls
Assembly Version: 2012.1.12.215
Win32 Version: 2012.1.12.0215
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Telerik.WinControls/2012.1.12.215__5bb2a467cbec794e/Telerik.WinControls.dll
----------------------------------------
TelerikCommon
Assembly Version: 2012.1.12.215
Win32 Version: 2012.1.12.0215
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/TelerikCommon/2012.1.12.215__5bb2a467cbec794e/TelerikCommon.dll
----------------------------------------
al30nzul
Assembly Version: 2012.1.12.215
Win32 Version: 4.0.30319.232 built by: RTMGDR
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------

************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.

For example:

<configuration>
<system.windows.forms jitDebugging="true" />
</configuration>

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.

All other ways of closing a document seem to work just fine (ctrl-F4, close button on tab, close button on document's tab strip, selecting close or close all by right clicking the tab etc). If you try to perform this action while Designing the form (in VS2010), the instance of Visual Studio will close without warning.

I am attaching a sample project, just compile & run and try to close the document window by middle clicking on the window's tab header.
I was trying to find a way to disable this functionality (close window by middle clicking the document's tab) but I could not find any, do you have any suggestions?

Dock

answered on 19 Jul 2012

1 answer

104 views

TreeView migration paths

Hello,

This may be more of a TreeView category, but I'll start here anyway.

We've been a subscriber to the Codejock FlexibleTreeView control for some time now. I've been round and round with one of the senior developers here about why we chose it in the first place and what it's usefulness is to the application.

Anyway, long story short, it has some draw backs that are getting in the way of migrating our application into current platforms: it's basically a 32-bit ActiveX OCX, chock full of all the goodness that goes with that territory as you can imagine.

So... We're also a subscriber to Telerik more recently, so I'd like to find out: what control(s) does Telerik support that would provide a comparable, though maybe not precisely identical, user experience as the FlexibleTreeView?

Thanks...

General Discussions

answered on 19 Jul 2012

1 answer

134 views

prevent ctrl+c in read only cell

Hi,

How do i prevent/trap the ctrl+c (paste) in a read only cell.

Thanks,

GridView

answered on 19 Jul 2012

12 answers

501 views

RadTimePicker Localization Close Button Text

Hi,

I use the RadControls for WinForms Q1 2012 SP1. I've localized my RadTimePicker Strings in C# exactly as you recommended it here. But the close button doesn't change to the localized string. Can you help me?

Best,

Peter

Calendar, DateTimePicker, TimePicker and Clock

answered on 19 Jul 2012

2 answers

1.3K+ views

Setting a custom height for the header row

Please take a look at the attached image.

As you can see I have vertical columns but I'm facing 2 problems.

1) The bigger issue is that for a lot of the columns, it cuts off the name and displays ... Even for the 1st one to show up the way it did, I for some reason had to expand the WIDTH of the Allocated To column. However all columns after the Reviewed column are dynamic and vary based on the database this is run against. See the image marked 2. I had to expand the last column to get the height to increase more and finally had to make it even wider for all the text to be readable. However I can't afford to make these columns that wide. Like I said they are dynamic and will hold at most 2 digits. I have searched your forums and tried the following but it does absolutely nothing. I have tried different numbers as well without luck.

rgv.TableElement.TableHeaderHeight = 200;

God knows why something that should be soooo simple is made so needlessly complex. I can't expand the height of the row by pulling down also on the row (or through code) but can increase it by increasing the column width. Who came up with this logic?

2) Would it be possible to have some columns show up horizontally and some vertically? This is not such a big deal...it would be a nice to have feature.

Issue #1 is more important so any help on that will be appreciated.

GridView

answered on 19 Jul 2012