Develop Reference

VSTO, there is an event when i change open inspector?

good day
I must add a button in the ribbon bar only for few specific mailitem,
i use this attribute to change the visibility.
getVisible="EnableControl"
and i use
IRibbonUI UIrib.Invalidate();
to update the ribbon, there is an event that run when i change focused ispector, so i can check if the button must be displaied or not
or a totally different way to do do this control?
Thanks for your support.
Best regards

You could refer to the link below: Switch focus to Outlook active window .
If you can't solve your problem, please let me know and I can give you a solution.

Whenever Application.Inspectors.NewInspector event fires, call IRibbonUI.Invalidate. Outlook will invoke all button state callbacks, including the getVisible callback.

Visio: catch switching window/document event

I developed an add in for Visio and I'm having some trouble with catching
certain events. I have a custom ribbon for my add in and what I already can do,
is enabled or disabled (show/hide) it based on the document.
But now I would like to have multiple documents open and check when switching to
another document if the ribbon should be enabled or disabled. However I can not seem to find the right event code for this. I tried the following codes but with no luck:
- PageChanged
- WindowChanged
- BeforeWindowPageTurn
- WindowTurnedToPage
So concretely what I would like to do is catch the event when one document loses focus and another one gets the focus.

You could listen to the Application.WindowActivated event and then in the handler, inspect the ActiveDocument or the window.Document property (in the eventargs) to decide whether it is a document that you're interested in. You might also want to listen to DocumentCreated and DocumentOpened (on Application) and only start listening to the window event once you know that the application might be handling one of your documents.

Winform app, force execute OnLoad Event when focus is on another tab

I have a WinForm app, the form has TabControl, control has three tabs tabPage1,tabPage2,tabPage3.
The Tab 'tabPage3' is hosting a User defined control which internally has one or more child controls.
Now my problem lies in tabPage3,
I know it is a pure Winforms behavior, until your parent is not activated child controls Onload event won't fire.
I have a requirement to force the Onload event to fire when the focus is on tabPage1, tabPage2. Is there any way to force the Onload event to fire.
I have already visited following links but didn't find any clue. Link Link Link

This is a very unusual requirement, strongly smells like an XY problem. The Load event is heavily over-used in Winforms, a side-effect of it being the default event for a Form or UserControl. One of the behaviors inherited from VB6, the Load event was a big deal in that language. What you want can easily be accomplished by not giving Winforms a choice:
public UserControl3() {
InitializeComponent();
CreateHandle();
}
The CreateHandle() call does the forcing, OnLoad will immediately run. But do be aware that this happens very early, too early to do the kind of things that you'd really want to use OnLoad() or the Load event for. Which are rather limited, it is only truly necessary to discover the actual Location and Size of the control. Anything else belongs in the constructor. Surely including the code that you now run in OnLoad().
Strongly favor using the constructor instead.

I had a similar problem for a previous project, for my needs I managed to just iterate over every tab page in the forms constructor (or possibly OnLoad I can't remember) and then reset the index back to 0 before ever showing the end user.
Something similar to:
for(int i = 1; i < tabControl.TabCount; i++)
tabControl.SelectTab(i);
tabControl.SelectTab(0);

Is there an event which fires when the Layout Details screen is opened?

I'd like to write some code that fires when the layout details screen is opened. Is there an event, some sort of API or some way to hijack Sitecore UI to allow me to do this? There's nothing in the Sitecore.config events sectiont hat looks relevant.
What I want to do is capture the ID of the item for which I'm currently updating so that I can use it in custom controls later on.
I'm using Sitecore 6.6.

Marek Musielak's answer is great. An alternative would be to change the command fired from the 'Details' Button - Look for item:setlayoutdetails in the commands.config.
You could create your own class that does your work then instantiates Sitecore.Shell.Framework.Commands.SetLayoutDetails afterwards.

You can override the \sitecore\shell\Applications\Content Manager\Dialogs\LayoutDetails\LayoutDetails.xml and change its code beside:
<CodeBeside
Type="Sitecore.Shell.Applications.ContentManager.Dialogs.LayoutDetails.LayoutDetailsForm,Sitecore.Client"/>
to inherit from your custom class that will simply inherits from LayoutDetailsForm and overrides e.g. OnLoad method.

textbox_tapped event not firing in metro app

I am building a win 8 app which has a textbox control inside a hierarchy of elements like ScrollViewer->Stackpanel->Grid->Image & TextBox. The textBox contain a tapped event to navigate to a page. This textbox_tapped event is not at all firing. I am not getting any error or exceptions also. Can somebody tell me the solution for getting this? Thank you.

Maybe something to do with the fact that you are testing it on a normal PC with a mouse, so its not a tap, though I'm not sure about that. You might get a similar result by using the "GotFocus" event instead.