How to stop the rehreased powerpoint or set focus out of the powerpoint in C# ?

Question

I am playing powerpoint in my window.
As you can see in this image window has two section, one is on the top that has tool bar where i have option like text, start button and etc. Now if my powerpoint is rehearsed in that case when i click on the text powerpoint should not be in active state
( it should be in deactivate state). but when i click on the start button it should be activated (rehearsed powerpoint should play). By default when this window launch focus is on start button.
What is happening here : When i click on text powerpoint is activated. that i dont want. how can i achive that ?
This is code that i am using on MouseLeftButtonDown event on the text :
private void txtPlayingAudio_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
PrerecordTooltip.Text = "Click to pause audio";
BrushConverter bc = new BrushConverter();
txtPlayingAudio.Foreground = (System.Windows.Media.Brush)bc.ConvertFrom("#007dc7");
btnStart.Focus();
Thanks

Answer 1

Why are you calling the Focus method on the Button if you don't want to focus it? If you want to be able to focus the TextBlock you should set its Focusable property to true before you call the Focus() method on it:
private void txtPlayingAudio_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
PrerecordTooltip.Text = "Click to pause audio";
BrushConverter bc = new BrushConverter();
txtPlayingAudio.Foreground = (System.Windows.Media.Brush)bc.ConvertFrom("#007dc7");
txtPlayingAudio.Focusable = true;
txtPlayingAudio.Focus();
If you have a Powerpoint related issue, for example how to activate or start the presentation itself or similar, you are in the wrong forum. Please ask these kind of questions in the Office development forum and not here in the WPF forum:
https://social.msdn.microsoft.com/Forums/office/en-US/home?category=officedev
Please also remember to close your threads by marking helpful posts as answer and please start a new thread in the appropriate forum if you have a new question.