[vtk-developers] Re: GUISupport directory ?

[de Boer Ingo]

> The source is in the current CVS (VTK/GUISupport/MFC).
Thanks... I just took a look at it...

I have a question. You wrote this:

  // setup the parent window
  this->renWin->SetWindowId(this->GetSafeHwnd());
  this->iren->SetRenderWindow(this->renWin);
  this->iren->Initialize();

I did in my samples something like:

  // setup the parent window
  this->renWin->SetWindowId(this->GetSafeHwnd());
  this->renWin->SetParentId(this->GetParent()->GetSafeHwnd());
  this->iren->SetRenderWindow(this->renWin);
  this->iren->Initialize();

and set the parent ID. Isn't it necessary to set the parent ID ?

Did you try my samples ?
In my opinion, three samples would be needed, MDI,SDI and
dialog-based. This is what people do. The only trouble
with the dialog-based application I had, was, that I
could not do a double click. For the MDI and SDI it worked
fine.

In WindowProc you set the focus for the button down.
Is this necessary ? If yes, shouldn't you set the focus
also for WM_MOUSEWHEEL and WM_KEYDOWN ?

In the OnSize function, wouldn't a call like
this->iren->UpdateSize(cx, cy);
be enough ?

How about extending the OnPaint with printing ?
Like this (pseudo, taken from my code)
if ( pDC->IsPrinting() )
{
	// Obtain the size of the printer page in pixels.
	int cxPage = pDC->GetDeviceCaps(HORZRES);
	int cyPage = pDC->GetDeviceCaps(VERTRES);

	// Get the size of the window in pixels.
	int *size = this->pvtkWin32OpenGLRW->GetSize();
	int cxWindow = size[0];
	int cyWindow = size[1];
	float fx = float(cxPage) / float(cxWindow);
	float fy = float(cyPage) / float(cyWindow);
	float scale = min(fx,fy);
	int x = int(scale * float(cxWindow));
	int y = int(scale * float(cyWindow));
	this->pvtkWin32OpenGLRW->SetupMemoryRendering(cxWindow, cyWindow, pDC->GetSafeHdc());
	this->pvtkWin32OpenGLRW->Render();
	HDC memDC = this->pvtkWin32OpenGLRW->GetMemoryDC();
	StretchBlt(pDC->GetSafeHdc(),0,0,x,y,memDC,0,0,cxWindow,cyWindow,SRCCOPY);
	this->pvtkWin32OpenGLRW->ResumeScreenRendering();
}
else
{
	// TODO: add draw code for native data here
	if (this->pvtkWin32RenderWI->GetInitialized())
	{
		this->pvtkWin32OpenGLRW->Render();
	}
}

greets
  Ingo