Hello,
I am using Visual C++ 2005 Express Beta 2 and cannot sort out how to
use the Scroll property value for a trackBar.
Under Event properties the name for the Scroll property is
trackBar1_Scrol l so how do I print out the Scroll value?
I have tried using
Console::WriteL ine(trackBar1_S croll.Value);
but get error message
error C2228: left of '.Value' must have class/struct/union
if I use
Console::WriteL ine(trackBar1_S croll->Value);
I get
error C2228: left of '.Value' must have class/struct/union/generic
type
As you will see I do not know what I am doing! Any help would be much
appreciated. I have found 2 books but they are not published until
October/November. Any ideas for a good site which addresses this
language?
Cheers
Geoff 3 5395
Geoff Cox wrote: I am using Visual C++ 2005 Express Beta 2 and cannot sort out how to use the Scroll property value for a trackBar.
TrackBar has an event called Scroll. When you double click on it, the
IDE creates a member function for you, named trackBar1_Scrol l. It's a
function, known as the event handler. Inside the body of the function
you write the code that need to be executed when the track bar's thumb
is moved.
Now you want to print the position of the track bar, which is accessed
via the track bar's Value property. The Value has nothing to do with
Scroll. Whether you scroll or not, the Value contains the current position.
So in the event handler type the following:
private: System::Void trackBar1_Scrol l(System::Objec t^ sender,
System::EventAr gs^ e)
{
Console::WriteL ine(trackBar1->Value);
}
Hope this helps,
Tom
On Thu, 18 Aug 2005 12:21:37 -0700, Tamas Demjen <td*****@yahoo. com>
wrote: Geoff Cox wrote: I am using Visual C++ 2005 Express Beta 2 and cannot sort out how to use the Scroll property value for a trackBar. TrackBar has an event called Scroll. When you double click on it, the IDE creates a member function for you, named trackBar1_Scrol l. It's a function, known as the event handler. Inside the body of the function you write the code that need to be executed when the track bar's thumb is moved.
Now you want to print the position of the track bar, which is accessed via the track bar's Value property. The Value has nothing to do with Scroll. Whether you scroll or not, the Value contains the current position.
So in the event handler type the following:
private: System::Void trackBar1_Scrol l(System::Objec t^ sender, System::EventAr gs^ e) { Console::WriteL ine(trackBar1->Value); }
Hope this helps,
Tam,
I should have read this before posting my other message to you! I
understand why I must use trackBar1->Value - thanks for that.
I am trying to work out how to make a button invisible.
button1->Visible(false) ;
is not correct - hwo do I do this?
Cheers
Geoff
Tom
On Thu, 18 Aug 2005 20:49:06 +0100, Geoff Cox <> wrote: I am trying to work out how to make a button invisible.
button1->Visible(false) ;
Solved!
button1->Visible = false;
Geoff is not correct - hwo do I do this?
Cheers
Geoff
Tom This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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