From db5baf73dbdcc76e29911a241e5e1cfdc430e3e0 Mon Sep 17 00:00:00 2001
From: tbaudier <thomas.baudier@creatis.insa-lyon.fr>
Date: Thu, 15 Sep 2016 11:54:09 +0200
Subject: [PATCH] With Qt4, debug the screenshot

---
 vv/vvMainWindow.cxx | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/vv/vvMainWindow.cxx b/vv/vvMainWindow.cxx
index 1bc0759..79b2805 100644
--- a/vv/vvMainWindow.cxx
+++ b/vv/vvMainWindow.cxx
@@ -3323,6 +3323,8 @@ void vvMainWindow::SaveScreenshot(QVTKWidget *widget)
   if (!fileName.isEmpty()) {
     vtkSmartPointer<vtkWindowToImageFilter> w2i = vtkSmartPointer<vtkWindowToImageFilter>::New();
     w2i->SetInput(widget->GetRenderWindow());
+    w2i->SetMagnification(1);
+    w2i->SetInputBufferTypeToRGBA(); //also record the alpha (transparency) channel
     w2i->Update();
     vtkImageData *image = w2i->GetOutput();
 
-- 
2.47.1