ControlPaint.FillReversibleRectangle(Rectangle, Color) Metode

Definisi

Ruang nama:

System.Windows.Forms

Rakitan:

System.Windows.Forms.dll

Sumber:

ControlPaint.cs

Menggambar persegi panjang yang terisi dan dapat diubah di layar.

public:
 static void FillReversibleRectangle(System::Drawing::Rectangle rectangle, System::Drawing::Color backColor);

public static void FillReversibleRectangle(System.Drawing.Rectangle rectangle, System.Drawing.Color backColor);

static member FillReversibleRectangle : System.Drawing.Rectangle * System.Drawing.Color -> unit

Public Shared Sub FillReversibleRectangle (rectangle As Rectangle, backColor As Color)

Parameter

rectangle

Rectangle

Rectangle yang mewakili dimensi persegi panjang untuk diisi, dalam koordinat layar.

backColor

Color

Latar Color belakang di belakang isi.

Contoh

Contoh kode berikut menunjukkan menggunakan FillReversibleRectangle metode . Untuk menjalankan contoh, tempelkan kode berikut dalam formulir. Tambahkan tombol bernama Button2 ke formulir dan pastikan semua peristiwa terhubung ke penanganan aktivitas mereka.

//When the mouse hovers over Button2, its ClientRectangle is filled.
void Button2_MouseHover( Object^ sender, System::EventArgs^ /*e*/ )
{
   Control^ senderControl = dynamic_cast<Control^>(sender);
   Rectangle screenRectangle = senderControl->RectangleToScreen( senderControl->ClientRectangle );
   ControlPaint::FillReversibleRectangle( screenRectangle, senderControl->BackColor );
}

// When the mouse leaves Button2, its ClientRectangle is cleared by
// calling the FillReversibleRectangle method again.
void Button2_MouseLeave( Object^ sender, System::EventArgs^ /*e*/ )
{
   Control^ senderControl = dynamic_cast<Control^>(sender);
   Rectangle screenRectangle = senderControl->RectangleToScreen( senderControl->ClientRectangle );
   ControlPaint::FillReversibleRectangle( screenRectangle, senderControl->BackColor );
}

//When the mouse hovers over Button2, its ClientRectangle is filled.
private void Button2_MouseHover(object sender, System.EventArgs e)
{
    Control senderControl = (Control) sender;
    Rectangle screenRectangle = senderControl.RectangleToScreen(
        senderControl.ClientRectangle);
    ControlPaint.FillReversibleRectangle(screenRectangle, 
        senderControl.BackColor);
}

// When the mouse leaves Button2, its ClientRectangle is cleared by
// calling the FillReversibleRectangle method again.
private void Button2_MouseLeave(object sender, System.EventArgs e)
{
    Control senderControl = (Control) sender;
    Rectangle screenRectangle = senderControl.RectangleToScreen(
        senderControl.ClientRectangle);
    ControlPaint.FillReversibleRectangle(screenRectangle, 
        senderControl.BackColor);
}

' When the mouse hovers over Button2, its ClientRectangle is filled.
Private Sub Button2_MouseHover(ByVal sender As Object, _
    ByVal e As System.EventArgs) Handles Button2.MouseHover

    Dim senderControl As Control = CType(sender, Control)
    Dim screenRectangle As Rectangle = _
        senderControl.RectangleToScreen(senderControl.ClientRectangle)
    ControlPaint.FillReversibleRectangle(screenRectangle, _
        senderControl.BackColor)
End Sub


' When the mouse leaves Button2, its ClientRectangle is cleared by
' calling the FillReversibleRectangle method again.
Private Sub Button2_MouseLeave(ByVal sender As Object, _
    ByVal e As System.EventArgs) Handles Button2.MouseLeave

    Dim senderControl As Control = CType(sender, Control)
    Dim screenRectangle As Rectangle = _
        senderControl.RectangleToScreen(senderControl.ClientRectangle)
    ControlPaint.FillReversibleRectangle(screenRectangle, _
        senderControl.BackColor)
End Sub

Keterangan

Parameter backColor digunakan untuk menghitung warna isian persegi panjang sehingga selalu terlihat di latar belakang.

Hasil metode ini dapat dibalik dengan menggambar persegi panjang yang sama lagi. Menggambar persegi panjang menggunakan metode ini mirip dengan membalikkan wilayah layar, kecuali memberikan performa yang lebih baik untuk berbagai warna yang lebih luas.

Lihat juga

• BackColor