asked on

SetTimer

Hi,

When setting a Timer using the API func. SetTimer,
How can you make sure that the handle of the timer you're
providing isn't already in use?
Is there a function that returns the next valid timer handle?
Something like FreeFile???

Thanks in advance

mrmick

The SetTimer API function creates a timer, the return value is a long integer identifying the new timer. It is unique.

There is a Timer control with VB - it's easier to use.

mrmick

whoops,

If the return value is zero, the function failed.

BabyFace

ASKER

Hi,

Perhapse I should make my question a little clearer.
Sorry.

This is the definition of SetTimer:
Declare Function SetTimer Lib "user32" Alias "SetTimer" (ByVal hWnd As Long, ByVal nIDEvent As Long, ByVal uElapse As Long, ByVal lpTimerFunc As Long) As Long

How do I find the next valid timer identifier?
because what if you did this?
SetTimer me.hwnd,1,1000,addressof Myfunc
[in another function]
SetTimer me.hwnd,1,1000,addressof MyFunc2
[destory event]
KillTimer 1
???? What about the other timer?????

mrmick

As I said, the timer function RETURNS a long integer identifying the new timer. It is unique. When set the timer like this:

TimerID = SetTimer me.hwnd,1,1000,addressof Myfunc

And release it:

Kill TimerID

The second argument in you're example (1) is the EVENT ID

BabyFace

ASKER

Quote:
TimerID = SetTimer me.hwnd,1,1000,addressof Myfunc
And release it:
Kill TimerID

I suppose you ment KillTimer TimerID right?
But the description of the KillTimer say that it receives a windows hwnd and the timer identifier
not the timer handle.
So how do you find the next valid timer handle.?

ASKER CERTIFIED SOLUTION

mrmick

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