Re: [osg-users] setCursor problem

[Romain Charbit]

Thanks for this answer, I followed some threads about the subject but I got 
lost with what is working and what is not. thanks again.

Romain.


Romain Charbit

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[osg-users] setCursor problem

[Romain Charbit]

Hi,

I've seen some discussions about the mouse cursor, but it doesn't answer my 
question. 

How can I set a cursor with the function setCursor. When I make a setCursor :


Code:

osgViewer::GraphicsWindow::MouseCursor mouseCursor;
mouseCursor = osgViewer::GraphicsWindow::DestroyCursor;
gw-setCursor(mouseCursor);




 it does absolutely nothing. 

The only way I can have a cursor, is to do :


Code:

while(!viewer.done())
{
viewer.frame();
gw-setCursor(mouseCursor);
}




And it does not a proper set, it sets the new cursor only when the mouse is not 
moving.

I watched the source code, and I find it a bit confusing : 

osgViewer/GraphicsWindowWin32.cpp

GraphicsWindowWin32::setCursor( MouseCursor mouseCursor )


Code:

if (mouseCursor != LeftRightCursor  
mouseCursor != UpDownCursor  
mouseCursor != TopLeftCorner  
mouseCursor != TopRightCorner  
mouseCursor != BottomLeftCorner  
mouseCursor != BottomRightCorner)
{
_appMouseCursor = mouseCursor;
}




then :

Code:

case WM_NCHITTEST :

...
...

default:
  if (_traits-useCursor  _appMouseCursor != InheritCursor)
   setCursor(LeftArrowCursor);
  break;






so if I set a cursor, _appMouseCursor will be equal to the new cursor, but will 
be erased by the case WM_NCHITTEST;

Is there something I'm missing?

Thank you.

Romain.


Romain Charbit

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Re: [osg-users] setCursor problem

[Frederic Bouvier]

Hi Romain,

if you followed the thread I initiated on osg-submissions list, you'd realize 
that the current code can only show the left arrow.
So in other words, don't change your code, and apply the patches I submitted.

I am sure Robert will take care of this soon.

Regards,
-Fred


- Romain Charbit a écrit :

 Hi,
 
 I've seen some discussions about the mouse cursor, but it doesn't
 answer my question. 
 
 How can I set a cursor with the function setCursor. When I make a
 setCursor :
 
 
 Code:
 
 osgViewer::GraphicsWindow::MouseCursor mouseCursor;
 mouseCursor = osgViewer::GraphicsWindow::DestroyCursor;
 gw-setCursor(mouseCursor);
 
 
 
 
  it does absolutely nothing. 
 
 The only way I can have a cursor, is to do :
 
 
 Code:
 
 while(!viewer.done())
 {
 viewer.frame();
   gw-setCursor(mouseCursor);
 }
 
 
 
 
 And it does not a proper set, it sets the new cursor only when the
 mouse is not moving.
 
 I watched the source code, and I find it a bit confusing : 
 
 osgViewer/GraphicsWindowWin32.cpp
 
 GraphicsWindowWin32::setCursor( MouseCursor mouseCursor )
 
 
 Code:
 
 if (mouseCursor != LeftRightCursor  
 mouseCursor != UpDownCursor  
 mouseCursor != TopLeftCorner  
 mouseCursor != TopRightCorner  
 mouseCursor != BottomLeftCorner  
 mouseCursor != BottomRightCorner)
 {
 _appMouseCursor = mouseCursor;
 }
 
 
 
 
 then :
 
 Code:
 
 case WM_NCHITTEST :
 
 ...
 ...
 
 default:
   if (_traits-useCursor  _appMouseCursor != InheritCursor)
setCursor(LeftArrowCursor);
   break;
 
 
 
 
 
 
 so if I set a cursor, _appMouseCursor will be equal to the new cursor,
 but will be erased by the case WM_NCHITTEST;
 
 Is there something I'm missing?
 
 Thank you.
 
 Romain.
 
 
 Romain Charbit
 
 --
 Read this topic online here:
 http://forum.openscenegraph.org/viewtopic.php?p=10917#10917
 
 
 
 
 
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