X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/aa757f71d997130800466f7fd958f1beea5ce081..02ab5afa8701ecc9434e7d8c30850d0d4ec5903f:/client/proxguiqt.cpp

diff --git a/client/proxguiqt.cpp b/client/proxguiqt.cpp
index dc8279b5..ab0976cc 100644
--- a/client/proxguiqt.cpp
+++ b/client/proxguiqt.cpp
@@ -269,6 +269,7 @@ int Plot::xCoordOf(int i, QRect r )
 int Plot::yCoordOf(int v, QRect r, int maxVal)
 {
 	int z = (r.bottom() - r.top())/2;
+	if ( maxVal == 0 ) maxVal++;
 	return -(z * v) / maxVal + z;
 }
 
@@ -579,6 +580,8 @@ Plot::Plot(QWidget *parent) : QWidget(parent), GraphStart(0), GraphPixelsPerPoin
 	CursorBPos = 0;
 
 	setWindowTitle(tr("Sliders"));
+
+	master = parent;
 }
 
 void Plot::closeEvent(QCloseEvent *event)
@@ -688,7 +691,7 @@ void Plot::keyPressEvent(QKeyEvent *event)
 			break;
 
 		case Qt::Key_Q:
-			this->hide();
+			master->hide();
 			break;
 
 		default: