Assembly : System.Windows.Forms (dans system.windows.forms.dll)
SyntaxePublic Class PaintEventArgs Inherits EventArgs Implements IDisposable
Dim instance As PaintEventArgs
public class PaintEventArgs : EventArgs, IDisposable
public ref class PaintEventArgs : public EventArgs, IDisposable
public class PaintEventArgs extends EventArgs implements IDisposable
public class PaintEventArgs extends EventArgs implements IDisposable
NotesL'événement Paint se produit lorsque le contrôle est redessiné. PaintEventArgs spécifie l'objet Graphics à utiliser pour peindre le contrôle, ainsi que le ClipRectangle dans lequel le peindre.
Pour plus d'informations sur le modèle d'événement, consultez Événements et délégués.
ExempleL'exemple suivant illustre la gestion de l'événement Paint et l'utilisation de la classe PaintEventArgs pour dessiner des rectangles sur le formulaire. Les événements MouseDown et MouseUp sont gérés pour déterminer la taille du rectangle. L'exemple illustre également la méthode Invalidate pour invalider la zone du rectangle, afin qu'il soit redessiné.
Dim RcDraw As Rectangle Dim PenWidth As Integer = 5 Private Sub Form1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseDown ' Determine the initial rectangle coordinates... RcDraw.X = e.X RcDraw.Y = e.Y End Sub Private Sub Form1_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseUp ' Determine the width and height of the rectangle... If e.X < RcDraw.X Then RcDraw.Width = RcDraw.X - e.X RcDraw.X = e.X Else RcDraw.Width = e.X - RcDraw.X End If If e.Y < RcDraw.Y Then RcDraw.Height = RcDraw.Y - e.Y RcDraw.Y = e.Y Else RcDraw.Height = e.Y - RcDraw.Y End If ' Force a repaint of the region occupied by the rectangle... Me.Invalidate(RcDraw) End Sub Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint ' Draw the rectangle... e.Graphics.DrawRectangle(New Pen(Color.Blue, PenWidth), RcDraw) End Sub
private Rectangle RcDraw; private float PenWidth = 5; private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e) { // Determine the initial rectangle coordinates... RcDraw.X = e.X; RcDraw.Y = e.Y; } private void Form1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e) { // Determine the width and height of the rectangle... if(e.X < RcDraw.X) { RcDraw.Width = RcDraw.X - e.X; RcDraw.X = e.X; } else { RcDraw.Width = e.X - RcDraw.X; } if(e.Y < RcDraw.Y) { RcDraw.Height = RcDraw.Y - e.Y; RcDraw.Y = e.Y; } else { RcDraw.Height = e.Y - RcDraw.Y; } // Force a repaint of the region occupied by the rectangle... this.Invalidate(RcDraw); } private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e) { // Draw the rectangle... e.Graphics.DrawRectangle(new Pen(Color.Blue, PenWidth), RcDraw); }
private: Rectangle RcDraw; void Form1_MouseDown( Object^ /*sender*/, System::Windows::Forms::MouseEventArgs^ e ) { // Determine the initial rectangle coordinates... RcDraw.X = e->X; RcDraw.Y = e->Y; } void Form1_MouseUp( Object^ /*sender*/, System::Windows::Forms::MouseEventArgs^ e ) { // Determine the width and height of the rectangle... if ( e->X < RcDraw.X ) { RcDraw.Width = RcDraw.X - e->X; RcDraw.X = e->X; } else { RcDraw.Width = e->X - RcDraw.X; } if ( e->Y < RcDraw.Y ) { RcDraw.Height = RcDraw.Y - e->Y; RcDraw.Y = e->Y; } else { RcDraw.Height = e->Y - RcDraw.Y; } // Force a repaint of the region occupied by the rectangle... this->Invalidate( RcDraw ); } void Form1_Paint( Object^ /*sender*/, System::Windows::Forms::PaintEventArgs^ e ) { // Draw the rectangle... float PenWidth = 5; e->Graphics->DrawRectangle( gcnew Pen( Color::Blue,PenWidth ), RcDraw ); }
private Rectangle rcDraw; private float penWidth = 5; private void Form1_MouseDown(Object sender, System.Windows.Forms.MouseEventArgs e) { // Determine the initial rectangle coordinates... rcDraw.set_X(e.get_X()); rcDraw.set_Y(e.get_Y()); } //Form1_MouseDown private void Form1_MouseUp(Object sender, System.Windows.Forms.MouseEventArgs e) { // Determine the width and height of the rectangle... if (e.get_X() < rcDraw.get_X()) { rcDraw.set_Width(rcDraw.get_X() - e.get_X()); rcDraw.set_X(e.get_X()); } else { rcDraw.set_Width(e.get_X() - rcDraw.get_X()); } if (e.get_Y() < rcDraw.get_Y()) { rcDraw.set_Height(rcDraw.get_Y() - e.get_Y()); rcDraw.set_Y(e.get_Y()); } else { rcDraw.set_Height(e.get_Y() - rcDraw.get_Y()); } // Force a repaint of the region occupied by the rectangle... this.Invalidate(rcDraw); } //Form1_MouseUp private void Form1_Paint(Object sender, System.Windows.Forms.PaintEventArgs e) { // Draw the rectangle... e.get_Graphics().DrawRectangle(new Pen(Color.get_Blue(), penWidth), rcDraw); } //Form1_Paint
' This example creates a PictureBox control on the form and draws to it. ' This example assumes that the Form_Load event handler method is connected ' to the Load event of the form. Private pictureBox1 As New PictureBox() Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load ' Dock the PictureBox to the form and set its background to white. pictureBox1.Dock = DockStyle.Fill pictureBox1.BackColor = Color.White ' Connect the Paint event of the PictureBox to the event handler method. AddHandler pictureBox1.Paint, AddressOf Me.pictureBox1_Paint ' Add the PictureBox control to the Form. Me.Controls.Add(pictureBox1) End Sub 'Form1_Load Private Sub pictureBox1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) ' Create a local version of the graphics object for the PictureBox. Dim g As Graphics = e.Graphics ' Draw a string on the PictureBox. g.DrawString("This is a diagonal line drawn on the control", _ New Font("Arial", 10), Brushes.Red, New PointF(30.0F, 30.0F)) ' Draw a line in the PictureBox. g.DrawLine(System.Drawing.Pens.Red, pictureBox1.Left, _ pictureBox1.Top, pictureBox1.Right, pictureBox1.Bottom) End Sub 'pictureBox1_Paint
// This example creates a PictureBox control on the form and draws to it. // This example assumes that the Form_Load event handler method is // connected to the Load event of the form. private PictureBox pictureBox1 = new PictureBox(); private void Form1_Load(object sender, System.EventArgs e) { // Dock the PictureBox to the form and set its background to white. pictureBox1.Dock = DockStyle.Fill; pictureBox1.BackColor = Color.White; // Connect the Paint event of the PictureBox to the event handler method. pictureBox1.Paint += new System.Windows.Forms.PaintEventHandler(this.pictureBox1_Paint); // Add the PictureBox control to the Form. this.Controls.Add(pictureBox1); } private void pictureBox1_Paint(object sender, System.Windows.Forms.PaintEventArgs e) { // Create a local version of the graphics object for the PictureBox. Graphics g = e.Graphics; // Draw a string on the PictureBox. g.DrawString("This is a diagonal line drawn on the control", new Font("Arial",10), System.Drawing.Brushes.Blue, new Point(30,30)); // Draw a line in the PictureBox. g.DrawLine(System.Drawing.Pens.Red, pictureBox1.Left, pictureBox1.Top, pictureBox1.Right, pictureBox1.Bottom); }
// This example creates a PictureBox control on the form and draws to it. // This example assumes that the Form_Load event handler method is // connected to the Load event of the form. private: PictureBox^ pictureBox1; void Form1_Load( Object^ /*sender*/, System::EventArgs^ /*e*/ ) { pictureBox1 = gcnew PictureBox; // Dock the PictureBox to the form and set its background to white. pictureBox1->Dock = DockStyle::Fill; pictureBox1->BackColor = Color::White; // Connect the Paint event of the PictureBox to the event handler method. pictureBox1->Paint += gcnew System::Windows::Forms::PaintEventHandler( this, &Form1::pictureBox1_Paint ); // Add the PictureBox control to the Form. this->Controls->Add( pictureBox1 ); } void pictureBox1_Paint( Object^ /*sender*/, System::Windows::Forms::PaintEventArgs^ e ) { // Create a local version of the graphics object for the PictureBox. Graphics^ g = e->Graphics; // Draw a string on the PictureBox. g->DrawString( "This is a diagonal line drawn on the control", gcnew System::Drawing::Font( "Arial",10 ), System::Drawing::Brushes::Blue, Point(30,30) ); // Draw a line in the PictureBox. g->DrawLine( System::Drawing::Pens::Red, pictureBox1->Left, pictureBox1->Top, pictureBox1->Right, pictureBox1->Bottom ); }
// This example creates a PictureBox control on the form and draws to it. // This example assumes that the Form_Load event handler method is // connected to the Load event of the form. private PictureBox pictureBox1 = new PictureBox(); private void Form1_Load(Object sender, System.EventArgs e) { // Dock the PictureBox to the form and set its background to white. pictureBox1.set_Dock(DockStyle.Fill); pictureBox1.set_BackColor(Color.get_White()); // Connect the Paint event of the PictureBox to the event handler // method. pictureBox1.add_Paint(new System.Windows.Forms.PaintEventHandler(this. pictureBox1_Paint)); // Add the PictureBox control to the Form. this.get_Controls().Add(pictureBox1); } //Form1_Load private void pictureBox1_Paint(Object sender, System.Windows.Forms.PaintEventArgs e) { // Create a local version of the graphics object for the PictureBox. Graphics g = e.get_Graphics(); // Draw a string on the PictureBox. g.DrawString("This is a diagonal line drawn on the control", new Font("Arial", 10), System.Drawing.Brushes.get_Blue(), (PointF)new PointF(30, 30)); // Draw a line in the PictureBox. g.DrawLine(System.Drawing.Pens.get_Red(), pictureBox1.get_Left(), pictureBox1.get_Top(), pictureBox1.get_Right(), pictureBox1.get_Bottom()); } //pictureBox1_Paint
Hiérarchie d'héritageSystem.EventArgs
System.Windows.Forms.PaintEventArgs
System.Windows.Forms.TableLayoutCellPaintEventArgs
Sécurité des threads
Plates-formesWindows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile pour Pocket PC, Windows Mobile pour Smartphone, Windows Server 2003, Windows XP Édition Media Center, Windows XP Professionnel Édition x64, Windows XP SP2, Windows XP Starter Edition
Le .NET Framework ne prend pas en charge toutes les versions de chaque plate-forme. Pour obtenir la liste des versions prises en charge, consultez Configuration requise.
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