accessing protected members of inherited classes

[JH]

I am attempting to enable double buffering for a panel
control. The SetStyle method of the panel control is
protected, so I am attempting to access it by writing a
special panel class that inherits from
System.Windows.Forms.Panel.

But from there I am not sure how to access the protected
member SetStyle to set DoubleBuffer to true. Can anyone
point me in the right direction? Some code example would
be extremely helpful to me.

Thanks

JH

[Ignacio Machin]

All you have to do is derive your class from Panel:

class SpecialPanel: System.Windows.Forms.Panel
{
}

from MSDN Control.SetStyle:

public void EnableDoubleBuffering()
{
// Set the value of the double-buffering style bits to true.
this.SetStyle(ControlStyles.DoubleBuffer |
ControlStyles.UserPaint |
ControlStyles.AllPaintingInWmPaint,
true);
this.UpdateStyles();
}
Hope this help,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"JH" <jh******@netzero.net> wrote in message
news:08****************************@phx.gbl...

I am attempting to enable double buffering for a panel
control. The SetStyle method of the panel control is
protected, so I am attempting to access it by writing a
special panel class that inherits from
System.Windows.Forms.Panel.

But from there I am not sure how to access the protected
member SetStyle to set DoubleBuffer to true. Can anyone
point me in the right direction? Some code example would
be extremely helpful to me.

Thanks

JH

[yeshwanthhv]

Hi Machin,

Thats really Great. But I still have a doubt on how do you access EnableDoubleBufering in your main file.

I have a similar issue over here.
In panel1_paint() I am drawing a circle and shrinking/expanding it using Mouse. But this is having lot of flickering on the screen. As it is said in the below reply I wrote a class and created EnableDoubleBufering() function. But after that how shd I use this in the mail file so that my existing panel1 will have a no-flickering impact.

Regards,
Yeshwanth

All you have to do is derive your class from Panel:

class SpecialPanel: System.Windows.Forms.Panel
{
}

from MSDN Control.SetStyle:

public void EnableDoubleBuffering()
{
// Set the value of the double-buffering style bits to true.
this.SetStyle(ControlStyles.DoubleBuffer |
ControlStyles.UserPaint |
ControlStyles.AllPaintingInWmPaint,
true);
this.UpdateStyles();
}


Hope this help,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"JH" <[e-mail]> wrote in message
news:086a01c36146$f72a85f0$[e-mail]...[color=blue]
> I am attempting to enable double buffering for a panel
> control. The SetStyle method of the panel control is
> protected, so I am attempting to access it by writing a
> special panel class that inherits from
> System.Windows.Forms.Panel.
>
> But from there I am not sure how to access the protected
> member SetStyle to set DoubleBuffer to true. Can anyone
> point me in the right direction? Some code example would
> be extremely helpful to me.
>
> Thanks
>
> JH[/color]