diff --git a/main.cpp b/main.cpp
index 2647b84..881215d 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,6 +1,4 @@
 #include "qtsgraph.h"
-using namespace Qt;
-using namespace std;
 
 int main(int argc, char *argv[])
 {
diff --git a/qtSimpleGraph.pro b/qtSimpleGraph.pro
index fd94d6c..8cb006a 100644
--- a/qtSimpleGraph.pro
+++ b/qtSimpleGraph.pro
@@ -17,8 +17,7 @@ HEADERS += \
 
 FORMS +=
 
-TRANSLATIONS += \
-    qtSimpleGraph_ru_RU.ts
+TRANSLATIONS +=
 
 # Default rules for deployment.
 qnx: target.path = /tmp/$${TARGET}/bin
diff --git a/qtSimpleGraph_ru_RU.ts b/qtSimpleGraph_ru_RU.ts
deleted file mode 100644
index 892d343..0000000
--- a/qtSimpleGraph_ru_RU.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!DOCTYPE TS>
-<TS version="2.1" language="qtSimpleGraph_ru_RU"></TS>
diff --git a/qtsgraph.cpp b/qtsgraph.cpp
index d9b8819..8dac4a3 100644
--- a/qtsgraph.cpp
+++ b/qtsgraph.cpp
@@ -70,6 +70,10 @@ QTSGraph::QTSGraph(int w, int h, int x, int y, QWidget *parent)
         y = center.y() - h / 2;
     }
     this->setGeometry(x, y, w, h);
+    this->setMinimumHeight(h);
+    this->setMinimumWidth(w);
+    this->setMaximumHeight(h);
+    this->setMaximumWidth(w);
     this->setWindowTitle("Рисунок");
     Canvas = QPixmap(w, h);
     Canvas.fill(Qt::white);
@@ -171,7 +175,12 @@ void QTSGraph::Rectangle(int x1, int y1, int x2, int y2)
     update();
 }
 
-void QTSGraph::SetColor(QRgb c)
+void QTSGraph::SetColor(const QColor &c)
+{
+    Pen.setColor(c);
+}
+
+void QTSGraph::SetColor(const QRgb c)
 {
     Pen.setColor(QColor(c));
 }
diff --git a/qtsgraph.h b/qtsgraph.h
index 7610e50..1c3cd11 100644
--- a/qtsgraph.h
+++ b/qtsgraph.h
@@ -81,7 +81,8 @@ public:
     int ReadKey();
     int ReadMouseButton();
     void Rectangle(int x1, int y1, int x2, int y2);
-    void SetColor(QRgb c);
+    void SetColor(const QColor &c = Qt::black);
+    void SetColor(const QRgb c = 0x00000000);
     void SetFillStyle(int Pattern, QRgb Color); // Стиль и цвет заливки
     /*
         0 - NoBrush
diff --git a/screenshots/line-color-penstyle.png b/screenshots/line-color-penstyle.png
new file mode 100644
index 0000000..8aee6bb
Binary files /dev/null and b/screenshots/line-color-penstyle.png differ