class TGLWidget: public TGCanvas, public TGLPaintDevice

Creates widget with default pixel format.

Create widget with the requested pixel format.

Creates widget with default pixel format, default shareList.

Create widget with the requested pixel format, default shareList.

Destructor. Deletes window ???? and XVisualInfo

Call glEnable(... in overrider of InitGL.

Do actual drawing in overrider of PaintGL.

Make the gl-context current.

Swap buffers.

Get gl context.

Signal. Under Win32 I have to switch between
threads to let direct usage of gl code.

Signal. Under Win32 I have to switch between
threads to let direct usage of gl code.

Signal. Under Win32 I have to switch between
threads to let direct usage of gl code.

Signal. Under Win32 I have to switch between
threads to let direct usage of gl code.

Signal. Under Win32 I have to switch between
threads to let direct usage of gl code.

Index of window, registered by gVirtualX.

Pixel format.

Id of container.

Dpy*, XVisualInfo *

CreateWidget. This function called only during construction,
I've extracted this code from ctors to make WIN32/X11
separation simpler and because of gInterpreter usage.
new, TGLContext can throw
std::bad_alloc and std::runtime_error. Before try block, the only
resource allocated is pointed by fWindowIndex (InitWindow cannot throw).
In try block (and after successful constraction)
resources are controlled by std::auto_ptrs and dtor.

CreateWidget. Copy of the above for default shareList.

Set pixel format.
Resource - hDC, owned and freed by guard object.

Forse re-drawing of gl-widget.
   if (!gVirtualX->IsCmdThread()) {
gROOT->ProcessLineFast(Form("((TGLWidget *)0x%lx)->Repaint()", this));
return;
}

MakeCurrent();
InitGL();
PaintGL();
SwapBuffers();

Register gl-context created for this window.

Remove context (no real deletion, done by TGLContex dtor).

For camera.