How to: Draw a Filled Rectangle on a Windows Form
This example draws a filled rectangle on a form.
System::Drawing::SolidBrush^ myBrush = gcnew System::Drawing::SolidBrush(System::Drawing::Color::Red); System::Drawing::Graphics^ formGraphics; formGraphics = this->CreateGraphics(); formGraphics->FillRectangle(myBrush, Rectangle(0, 0, 200, 300)); delete myBrush; delete formGraphics;
You cannot call this method in the Load event handler. The drawn content will not be redrawn if the form is resized or obscured by another form. To make your content automatically repaint, you should override the OnPaint method.