Cannot get form A to disappear before form B does something ...

  • Thread starter Thread starter Steve Howard
  • Start date Start date
S

Steve Howard

I guess I am still missing something in the Event Driven paradigm ...


I have a menu that gives the user access to sections in my code ... this is
a training application, so think of it as access to chapters.

When the user selects a button, I launch a 'splash' form that shows for a
couple of seconds, then I launch a second form that has course content. I
want some things to happen once the content form has opened, specifically
some audio needs to play.

When I close the Splash form and open the Content form, the audio plays
after about 2 seconds as expected, but the Splash form is still on screen.


Initially I used one container for the forms, like this

newForm= new SectSplash(ChoiceNum);

newForm.Show();



......



newForm = new Content(ChoiceNum);

//Show it

newForm.Show();



So I tried using two different containers:-





splash= new SectSplash(ChoiceNum);

splash.Show();



......



content= new Content(ChoiceNum);

//Show it

content.Show();





It made no difference.



I have tried a zillion combinations of Hide, Close, SentToBack and anything
else I could find.

I have tried all sorts in the opening form , running the code to play audio
on Load, on getFocus, on Activated etc, and even tried putting in a cludgy
delay in numerous different places to try to give the PDA time to kill the
form



for (int i = 1; i <= 100000; i++)

{

//nothing;

}



None of this seems to change the fact that the audio plays when the Splash
*should* be gone, but is somehow still visible.



Having said all that, here's the code.





private void LaunchSplash(int ChoiceNum)
{
splash = new SectSplash(ChoiceNum);
//Show it
splash.Show();

Clock = new Timer();
Clock.Interval = 2000;
Clock.Enabled = true;
this.Clock.Tick += new System.EventHandler(this.Clock_Tick);
}

void Clock_Tick(object Sender, EventArgs e)
{
//close slash
splash.SendToBack();
splash.Close();
//Stop timer
Clock.Enabled = false;
//Launch the lesson
launchLesson();
}

private void launchLesson()
{
switch (choiceNum)
{ // Set DECtalk voice
 
I have tried a zillion combinations of Hide, Close, SentToBack and
anything
else I could find.

I have tried all sorts in the opening form , running the code to play
audio on Load, on getFocus, on Activated etc, and even tried putting in a
cludgy delay in numerous different places to try to give the PDA time to
kill the form
Click to expand...

To clarify.

Once the Audio has played, the content form becomes visible. I want the
content form to become visible THEN have it play the audio.


Steve
 
Once the Audio has played, the content form becomes visible. I want the
content form to become visible THEN have it play the audio.
Click to expand...


Wow - finally managed to come up with the right search term to return
something that helps. I added a timer to the designer with an interval of 1.


Steve
 
Wow - finally managed to come up with the right search term to return
something that helps. I added a timer to the designer with an interval of
1.
Click to expand...


This was a fundamental misunderstanding of mine. I didn't realise that

form Content = new formName()


was lauding and running the form. Later in my code I was calling form.show,
when really I should have waited until that point to call new formName()
too.


When I finally realised this I revised the code and dropped the timer.


Steve
 
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