Re: Calling IContextMenu with a WPF ContextMenu - need HMENU - WPF Discussion Boards

17-Aug-09 1:13

mpiotrek wrote:
Can we store user interface made by Visual Studio in database?

You could, as long as the UI is done entirely in XAML this isn't too hard to achieve. If you use a pattern like MVVM (google it), you don't need to put code behind the view at all. Alternatively, these users could use Expression Blend which was designed for just this task.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

Re: WPF user interface stored in DB

kstxx17-Aug-09 1:19

kstxx

17-Aug-09 1:19

Ok. I understand. Interface would be in XAML. But what with events for example ondrag, onclick etc. Is this a big deal?

Re: WPF user interface stored in DB

Pete O'Hanlon17-Aug-09 1:36

17-Aug-09 1:36

Take a look at MVVM - you can separate your logic out into something called a ViewModel. I wrote an article[^] a couple of months ago that used MVVM and there's virtually no code behind the views. Download it, read through the code, and read up on the pattern. Sacha Barber's currently running a series on MVVM in WPF that is well worth reading, and you can find more information from the likes of Josh Smith and Karl Shifflett.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

Calling IContextMenu with a WPF ContextMenu - need HMENU

seguso16-Aug-09 22:38

seguso

16-Aug-09 22:38

Hi,

I am writing a WPF application (www.tabbles.net) with file managament capabilities. I need to show the same file context menus that Explorer does. I assume I have to query all shell extensions installed on the user's machine. In particular, for each shell extension, I have to invoke IContextMenu::QueryContextMenu[^]. The problem is that QueryContextMenu requires an HMENU as argument, but I am using the WPF ContextMenu class, which does not seem to have a method for obtaining an HMENU. How can I obtain the required HMENU to pass to the QueryContextMenu? Thanks a lot for any solution or workaround to my problem.

modified on Monday, August 17, 2009 5:09 AM

Re: Calling IContextMenu with a WPF ContextMenu - need HMENU

Pete O'Hanlon16-Aug-09 23:22

16-Aug-09 23:22

HMENU is actually a handle to the menu. In order to get a handle, you need to wrap your context menu in a HwndSource object, which gives you the handle you need.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

Applying a selection effect on 3D models

Etienne_12316-Aug-09 7:01

Re: Applying a selection effect on 3D models

16-Aug-09 7:01

Hi Guys

I want to add a selection effect to my 3d models so that when I select a model it fades to another color, and when deselecting it, it should fade back to it's original color again. The idea I have is to create a Storyboard, and somewhere in the code behind start the Storyboard when a certain model is selected, but, how would I go about specifying the actual fade effect e.g brown to red?

Pete O'Hanlon16-Aug-09 9:35

16-Aug-09 9:35

You could do this using a ColorAnimationUsingKeyFrames as in the following sample:

<Window
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="FadeSample.Window1"
  x:Name="Window"
  Title="Window1"
  Width="640" Height="480">
  <Window
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="FadeSample.Window1"
  x:Name="Window"
  Title="Window1"
  Width="640" Height="480">
  <Window.Resources>
    <Storyboard x:Key="OnClick1">
      <ColorAnimationUsingKeyFrames 
        BeginTime="00:00:00" Storyboard.TargetName="button" 
        Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)">
        <SplineColorKeyFrame KeyTime="00:00:01" Value="#FFEF1407"/>
      </ColorAnimationUsingKeyFrames>
    </Storyboard>
  </Window.Resources>
  <Window.Triggers>
    <EventTrigger 
      RoutedEvent="ButtonBase.Click" SourceName="button">
      <BeginStoryboard Storyboard="{StaticResource OnClick1}"/>
    </EventTrigger>
  </Window.Triggers>

  <Grid x:Name="LayoutRoot">
    <Button 
      HorizontalAlignment="Left" 
      VerticalAlignment="Top" 
      Content="Button" 
      RenderTransformOrigin="3.339,5.055" 
      Margin="120,115,0,0" 
      Background="#FFDF891A" 
      x:Name="button"/>
  </Grid>
</Window>

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

Re: Applying a selection effect on 3D models

Etienne_12317-Aug-09 7:07

Re: Applying a selection effect on 3D models

17-Aug-09 7:07

Thanks for the code sample, appreciate it very much.
Will try it as soon as possible and report back

Etienne_12318-Aug-09 4:55

Need help with styling a groupbox

18-Aug-09 4:55

Okay I understand how this works, but in the sample you gave me the Storyboard.TargetProperty is = (Panel.Background). How would I specify the animation to applied to a ModelVisual3D(3D model) instead? Also remember, the ModelVisual3D's aren't specified in the xaml, it get's rendered at runtime.

Etienne_12315-Aug-09 9:50

Re: Need help with styling a groupbox

15-Aug-09 9:50

Hi
I defined a Style in my xaml to be used on all Groupboxes, but there's ONE groupbox's background property that has to be different from the others. I tried setting this property in the code behind, but no luck. Any ideas?

Here's the code for the style:

<!--A style that formats all groupboxes--><br />
       <Style TargetType="GroupBox"><br />
           <Setter Property="Template"><br />
               <Setter.Value><br />
                   <ControlTemplate TargetType="GroupBox"><br />
                       <Grid><br />
                           <Grid.RowDefinitions><br />
                               <RowDefinition Height="Auto"/><br />
                               <RowDefinition Height="*"/><br />
                           </Grid.RowDefinitions><br />
                           <Border Grid.Row="0" BorderBrush="White" BorderThickness="2,2,2,1" CornerRadius="0,12,0,0" ><br />
                               <ContentPresenter Margin="4" ContentSource="Header" RecognizesAccessKey="True" /><br />
                           </Border><br />
                           <Border Grid.Row="1" BorderBrush="White" BorderThickness="2,0,2,2" CornerRadius="0,0,0,12" ><br />
                               <ContentPresenter Margin="4" /><br />
                           </Border><br />
                       </Grid><br />
                   </ControlTemplate><br />
               </Setter.Value><br />
           </Setter><br />
       </Style>

Pete O'Hanlon15-Aug-09 10:56

15-Aug-09 10:56

If all you need to do is have one groupbox that behaves slightly differently to the others in it's styling, all you need to do is create a new style that targets a groupbox, and give it a key. By default, (as long as you add it after the groupbox above) it will inherit the settings of the groupbox, and you can change the background property as appropriate. All you need do then is apply the style to the groupbox in question - you have the key to use here.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

Re: Need help with styling a groupbox

Etienne_12315-Aug-09 21:42

Re: Need help with styling a groupbox

15-Aug-09 21:42

"All you need do then is apply the style to the groupbox in question - you have the key to use here. "

This is exactly my question, how do I apply this specific style to the specific groupbox?

Etienne_12315-Aug-09 22:06