Managed C++/CLI

virtual void OnPaint(System::Windows::Forms::PaintEventArgs^ e) override<br />
{<br />
   // Creating brush for progressbar<br />
   SolidBrush^ progressBarBrush = gcnew SolidBrush(this->progressBarColor);<br />
   // Assigning the rectangle for this control to barRectangle<br />
   Rectangle barRect = this->ClientRectangle;<br />
   // Setting width of bar<br />
   barRect.Width = (int)(barRect.Width * this->percentCompleted);<br />
   // Getting controls Graphic<br />
   Graphics^ gLayer1 = e->Graphics;<br />
   // Creating bitmap to draw on outside screen<br />
   Bitmap^ bmpLayer2 = gcnew Bitmap(this->Width,this->Height,gLayer1);<br />
   // Getting Graphic for bitmap<br />
   Graphics^ gLayer2 = Graphics::FromImage(bmpLayer2);<br />
   // Painting bar on bitmap<br />
   gLayer2->FillRectangle(progressBarBrush, barRect);<br />
<br />
   // If text is to be displayed on progressbar<br />
   if(this->showTextOnProgressBar == true)<br />
   {   // Creating brushes for text on progressbar<br />
      SolidBrush^ textBehindBrush = gcnew SolidBrush(this->textBehindProgressBarColor);<br />
      SolidBrush^ textInFrontOfBrush = gcnew SolidBrush(this->textInFrontOfProgressBarColor);<br />
      // Creating font for progresstext<br />
      System::Drawing::Font^ drawFont = this->Font;<br />
      // Creating string format<br />
      System::Drawing::StringFormat^ strFormat = gcnew System::Drawing::StringFormat();<br />
      // Center text<br />
      strFormat->Alignment = StringAlignment::Center;<br />
      strFormat->LineAlignment = StringAlignment::Center;<br />
      // Drawing string behind progressbar<br />
      gLayer1->DrawString(<br />
               this->progressBarText,<br />
               drawFont,<br />
               textBehindBrush,<br />
               this->ClientRectangle,<br />
               strFormat<br />
               );<br />
      // Drawing string on bitmap (in front of progressbar)<br />
      gLayer2->DrawString(<br />
               this->progressBarText,<br />
               drawFont,<br />
               textInFrontOfBrush,<br />
               this->ClientRectangle,<br />
               strFormat<br />
               );<br />
   }<br />
<br />
<br />
   // Draw layer2 bitmap to layer1 Graphic<br />
   gLayer1->DrawImageUnscaledAndClipped(bmpLayer2, barRect);<br />
<br />
   // Draw a border around the control<br />
   DrawBorder(gLayer1);<br />
<br />
   // Clean up (delete some objects on the managed heap)<br />
   // Do some cleaning here...<br />
<br />
   // Can not delete Graphics object when using DoubleBuffer<br />
   //delete gLayer1;<br />
}