How to make the slider to work frm the point where it got stopped?

[Prity]

Hi All,

I have 1 slider, 1 command btn by name Play, and another 1 command btn by name stop and 1 image viewer(in which the images are shown) and i have 1 timer in which i have writtn the code.

When i run the project and click on Play btn(its a command btn) then slider wil star playing. When i click the stop btn then the slider wil get stopped. NOW MY Problem is when i stop the running of slider in the middle(example i wil stop it at 30th image then when i again click on the Play btn it should play from the 3oth image only) HOW to do this ????

Plese somebody help me

Thanks in Advance
Seema.....

[dglienna]

Store the location when you hit the STOP button. Just save the last image shown. (You can use a STATIC variable)

Static ImgCtr as Integer

[javajawa]

[ Merged from Duplicate Thread ]

Simple Enough.
You declare a variable called Playing as a boolean in the form
This is set to true in cmdPlay
And to False in cmdStop
In the timer, if playing is true, add 1 to slider.value, and displey the slider.value th image.

[WoF]

I think the problem lies elsewhere.
You have to keep track of the last image displayed, best in a Private variable in the playing form, which is visible by all code in the form.
Private LastImage As Integer
might serve as a counter, which image was last.

Nevertheless the idea of having a boolean which is true when playing helps also a lot:
Private Playing as Boolean
- When pressing the start button you go Playing = True and start playing at image number LastImage
- When pressing stop you go:
If Playing then Playing = False Else LastImage = 0
So: when pressing stop the first time, playing is stopped, but LastImage keeps its number.
Pressing stop again will reset LastImage, so next time you start playing from the beginning.

[javajawa]

I honestly can't see the point in having a LastImage variable, when all slider controls have a .value variable, and the slider represents which image you are on. Perhaps I mis-understand what the project is for, but that seems in easiest solution...

[JonnyPoet]

Dpnt doublepost !!
Its against Forum rules.
This is the same
http://www.codeguru.com/forum/showthread.php?t=468353

[WizBang]

Another consideration, is if the user is allowed to move the slider position. Then, if the user stops playback, moves the slider, then starts playback again, shouldn't it start at the point determined by the slider?

If so, then perhaps the timer should advance the slider only, and the slider events could then advance the image. In this way, when the user moves the slider, this will also change the image accordingly. However, if there are more images than there are possible slider values, you'll need to account for that.

[WoF]

I honestly can't see the point in having a LastImage variable, when all slider controls have a .value variable, and the slider represents which image you are on. Perhaps I mis-understand what the project is for, but that seems in easiest solution...

Sure. You are right here. It would only be matter of programming philosophy. You don't need the LastImage variable, but you can treat the Slider.value property in exactly the same way as I described.

In a way, continuing to play where it stopped last is somehow inherent in the slider control. Stopping to play means disabling the timer, and so the slider would stop where it is. Reenabling the timer would automatically resume playing where it stopped last.

For more help you should show us some code.

[Prity]

Its working fine.

dim Playing as boolean

In Play button i added
Playing=True

In Stop button i added
Playing=False

Thanks for all of u, for your help.
With regards
Seema