Region.IsVisible Método
Definição
Sobrecargas
| IsVisible(Single, Single, Single, Single, Graphics) |
Testa se qualquer parte do retângulo especificado está contida dentro deste Region desenhado usando o Graphics especificado.Tests whether any portion of the specified rectangle is contained within this Region when drawn using the specified Graphics. |
| IsVisible(Int32, Int32, Int32, Int32, Graphics) |
Testa se qualquer parte do retângulo especificado está contida dentro deste Region desenhado usando o Graphics especificado.Tests whether any portion of the specified rectangle is contained within this Region when drawn using the specified Graphics. |
| IsVisible(Single, Single, Single, Single) |
Testa se qualquer parte do retângulo especificado está contida dentro deste Region.Tests whether any portion of the specified rectangle is contained within this Region. |
| IsVisible(Int32, Int32, Int32, Int32) |
Testa se qualquer parte do retângulo especificado está contida dentro deste Region.Tests whether any portion of the specified rectangle is contained within this Region. |
| IsVisible(Single, Single, Graphics) |
Testa se o ponto especificado está contido dentro deste Region quando desenhado usando especificado Graphics.Tests whether the specified point is contained within this Region when drawn using the specified Graphics. |
| IsVisible(Int32, Int32, Graphics) |
Testa se o ponto especificado está contido dentro deste objeto Region quando desenhado usando o objeto Graphics especificado.Tests whether the specified point is contained within this Region object when drawn using the specified Graphics object. |
| IsVisible(Single, Single) |
Testa se o ponto especificado está contido neste Region.Tests whether the specified point is contained within this Region. |
| IsVisible(Point) |
Testa se a estrutura Point especificada está contida dentro deste Region.Tests whether the specified Point structure is contained within this Region. |
| IsVisible(Rectangle, Graphics) |
Testa se qualquer parte da estrutura Rectangle especificada está contida dentro deste Region quando desenhada usando o Graphics especificado.Tests whether any portion of the specified Rectangle structure is contained within this Region when drawn using the specified Graphics. |
| IsVisible(PointF, Graphics) |
Testa se a estrutura PointF especificada está contida dentro deste Region quando desenhada usando o Graphics especificado.Tests whether the specified PointF structure is contained within this Region when drawn using the specified Graphics. |
| IsVisible(Point, Graphics) |
Testa se a estrutura Point especificada está contida dentro deste Region quando desenhada usando o Graphics especificado.Tests whether the specified Point structure is contained within this Region when drawn using the specified Graphics. |
| IsVisible(RectangleF) |
Testa se qualquer parte da estrutura RectangleF especificada está contida dentro deste Region.Tests whether any portion of the specified RectangleF structure is contained within this Region. |
| IsVisible(Rectangle) |
Testa se qualquer parte da estrutura Rectangle especificada está contida dentro deste Region.Tests whether any portion of the specified Rectangle structure is contained within this Region. |
| IsVisible(PointF) |
Testa se a estrutura PointF especificada está contida dentro deste Region.Tests whether the specified PointF structure is contained within this Region. |
| IsVisible(RectangleF, Graphics) |
Testa se qualquer parte da estrutura RectangleF especificada está contida dentro deste Region quando desenhada usando o Graphics especificado.Tests whether any portion of the specified RectangleF structure is contained within this Region when drawn using the specified Graphics. |
IsVisible(Single, Single, Single, Single, Graphics)
public:
bool IsVisible(float x, float y, float width, float height, System::Drawing::Graphics ^ g);
public bool IsVisible (float x, float y, float width, float height, System.Drawing.Graphics g);
public bool IsVisible (float x, float y, float width, float height, System.Drawing.Graphics? g);
member this.IsVisible : single * single * single * single * System.Drawing.Graphics -> bool
Public Function IsVisible (x As Single, y As Single, width As Single, height As Single, g As Graphics) As Boolean
Parâmetros
- x
- Single
A coordenada X do canto superior esquerdo do retângulo a ser testado.The x-coordinate of the upper-left corner of the rectangle to test.
- y
- Single
A coordenada Y do canto superior esquerdo do retângulo a ser testado.The y-coordinate of the upper-left corner of the rectangle to test.
- width
- Single
A largura do retângulo a ser testado.The width of the rectangle to test.
- height
- Single
A altura do retângulo a ser testado.The height of the rectangle to test.
- g
- Graphics
Um Graphics que representa um contexto de gráficos.A Graphics that represents a graphics context.
Retornos
true quando qualquer parte do retângulo especificado estiver contida dentro deste Region; caso contrário, false.true when any portion of the specified rectangle is contained within this Region; otherwise, false.
Exemplos
Para obter um exemplo de código, consulte o IsVisible(RectangleF) método.For a code example, see the IsVisible(RectangleF) method.
Comentários
A transformação atual do contexto de gráficos é usada para calcular a região interior e as coordenadas de retângulo na superfície de desenho.The current transformation of the graphics context is used to compute the region interior and the rectangle coordinates on the drawing surface.
Aplica-se a
IsVisible(Int32, Int32, Int32, Int32, Graphics)
public:
bool IsVisible(int x, int y, int width, int height, System::Drawing::Graphics ^ g);
public bool IsVisible (int x, int y, int width, int height, System.Drawing.Graphics g);
public bool IsVisible (int x, int y, int width, int height, System.Drawing.Graphics? g);
member this.IsVisible : int * int * int * int * System.Drawing.Graphics -> bool
Public Function IsVisible (x As Integer, y As Integer, width As Integer, height As Integer, g As Graphics) As Boolean
Parâmetros
- x
- Int32
A coordenada X do canto superior esquerdo do retângulo a ser testado.The x-coordinate of the upper-left corner of the rectangle to test.
- y
- Int32
A coordenada Y do canto superior esquerdo do retângulo a ser testado.The y-coordinate of the upper-left corner of the rectangle to test.
- width
- Int32
A largura do retângulo a ser testado.The width of the rectangle to test.
- height
- Int32
A altura do retângulo a ser testado.The height of the rectangle to test.
- g
- Graphics
Um Graphics que representa um contexto de gráficos.A Graphics that represents a graphics context.
Retornos
true quando qualquer parte do retângulo especificado estiver contida dentro deste Region; caso contrário, false.true when any portion of the specified rectangle is contained within this Region; otherwise, false.
Exemplos
Para obter um exemplo de código, consulte o IsVisible(RectangleF) método.For a code example, see the IsVisible(RectangleF) method.
Comentários
A transformação atual do contexto de gráficos é usada para calcular a região interior e as coordenadas de retângulo na superfície de desenho.The current transformation of the graphics context is used to compute the region interior and the rectangle coordinates on the drawing surface.
Aplica-se a
IsVisible(Single, Single, Single, Single)
public:
bool IsVisible(float x, float y, float width, float height);
public bool IsVisible (float x, float y, float width, float height);
member this.IsVisible : single * single * single * single -> bool
Public Function IsVisible (x As Single, y As Single, width As Single, height As Single) As Boolean
Parâmetros
- x
- Single
A coordenada X do canto superior esquerdo do retângulo a ser testado.The x-coordinate of the upper-left corner of the rectangle to test.
- y
- Single
A coordenada Y do canto superior esquerdo do retângulo a ser testado.The y-coordinate of the upper-left corner of the rectangle to test.
- width
- Single
A largura do retângulo a ser testado.The width of the rectangle to test.
- height
- Single
A altura do retângulo a ser testado.The height of the rectangle to test.
Retornos
true quando qualquer parte do retângulo especificado estiver contida dentro deste objeto Region; caso contrário, false.true when any portion of the specified rectangle is contained within this Region object; otherwise, false.
Exemplos
Para obter um exemplo de código, consulte o IsVisible(RectangleF) método.For a code example, see the IsVisible(RectangleF) method.
Aplica-se a
IsVisible(Int32, Int32, Int32, Int32)
public:
bool IsVisible(int x, int y, int width, int height);
public bool IsVisible (int x, int y, int width, int height);
member this.IsVisible : int * int * int * int -> bool
Public Function IsVisible (x As Integer, y As Integer, width As Integer, height As Integer) As Boolean
Parâmetros
- x
- Int32
A coordenada X do canto superior esquerdo do retângulo a ser testado.The x-coordinate of the upper-left corner of the rectangle to test.
- y
- Int32
A coordenada Y do canto superior esquerdo do retângulo a ser testado.The y-coordinate of the upper-left corner of the rectangle to test.
- width
- Int32
A largura do retângulo a ser testado.The width of the rectangle to test.
- height
- Int32
A altura do retângulo a ser testado.The height of the rectangle to test.
Retornos
true quando qualquer parte do retângulo especificado estiver contida dentro deste Region; caso contrário, false.true when any portion of the specified rectangle is contained within this Region; otherwise, false.
Exemplos
Para obter um exemplo de código, consulte o IsVisible(RectangleF) método.For a code example, see the IsVisible(RectangleF) method.
Aplica-se a
IsVisible(Single, Single, Graphics)
public:
bool IsVisible(float x, float y, System::Drawing::Graphics ^ g);
public bool IsVisible (float x, float y, System.Drawing.Graphics g);
public bool IsVisible (float x, float y, System.Drawing.Graphics? g);
member this.IsVisible : single * single * System.Drawing.Graphics -> bool
Public Function IsVisible (x As Single, y As Single, g As Graphics) As Boolean
Parâmetros
- x
- Single
A coordenada X do ponto a ser testado.The x-coordinate of the point to test.
- y
- Single
A coordenada Y do ponto a ser testado.The y-coordinate of the point to test.
- g
- Graphics
Um Graphics que representa um contexto de gráficos.A Graphics that represents a graphics context.
Retornos
true quando o ponto especificado estiver contido dentro deste Region; caso contrário, false.true when the specified point is contained within this Region; otherwise, false.
Exemplos
Para obter um exemplo de código, consulte o IsVisible(RectangleF) método.For a code example, see the IsVisible(RectangleF) method.
Comentários
A transformação atual do contexto de gráficos é usada para calcular a região interior e as coordenadas de ponto na superfície de desenho.The current transformation of the graphics context is used to compute the region interior and the point coordinates on the drawing surface.
Aplica-se a
IsVisible(Int32, Int32, Graphics)
public:
bool IsVisible(int x, int y, System::Drawing::Graphics ^ g);
public bool IsVisible (int x, int y, System.Drawing.Graphics g);
public bool IsVisible (int x, int y, System.Drawing.Graphics? g);
member this.IsVisible : int * int * System.Drawing.Graphics -> bool
Public Function IsVisible (x As Integer, y As Integer, g As Graphics) As Boolean
Parâmetros
- x
- Int32
A coordenada X do ponto a ser testado.The x-coordinate of the point to test.
- y
- Int32
A coordenada Y do ponto a ser testado.The y-coordinate of the point to test.
- g
- Graphics
Um Graphics que representa um contexto de gráficos.A Graphics that represents a graphics context.
Retornos
true quando o ponto especificado estiver contido dentro deste Region; caso contrário, false.true when the specified point is contained within this Region; otherwise, false.
Exemplos
Para obter um exemplo de código, consulte o IsVisible(RectangleF) método.For a code example, see the IsVisible(RectangleF) method.
Comentários
A transformação atual do contexto de gráficos é usada para calcular a região interior e as coordenadas de ponto na superfície de desenho.The current transformation of the graphics context is used to compute the region interior and the point coordinates on the drawing surface.
Aplica-se a
IsVisible(Single, Single)
public:
bool IsVisible(float x, float y);
public bool IsVisible (float x, float y);
member this.IsVisible : single * single -> bool
Public Function IsVisible (x As Single, y As Single) As Boolean
Parâmetros
- x
- Single
A coordenada X do ponto a ser testado.The x-coordinate of the point to test.
- y
- Single
A coordenada Y do ponto a ser testado.The y-coordinate of the point to test.
Retornos
true quando o ponto especificado estiver contido dentro deste Region; caso contrário, false.true when the specified point is contained within this Region; otherwise, false.
Exemplos
Para obter um exemplo de código, consulte o IsVisible(RectangleF) método.For a code example, see the IsVisible(RectangleF) method.
Aplica-se a
IsVisible(Point)
public:
bool IsVisible(System::Drawing::Point point);
public bool IsVisible (System.Drawing.Point point);
member this.IsVisible : System.Drawing.Point -> bool
Public Function IsVisible (point As Point) As Boolean
Parâmetros
Retornos
true quando point estiver contido dentro deste Region; caso contrário, false.true when point is contained within this Region; otherwise, false.
Exemplos
Para obter um exemplo de código, consulte o IsVisible(RectangleF) método.For a code example, see the IsVisible(RectangleF) method.
Aplica-se a
IsVisible(Rectangle, Graphics)
public:
bool IsVisible(System::Drawing::Rectangle rect, System::Drawing::Graphics ^ g);
public bool IsVisible (System.Drawing.Rectangle rect, System.Drawing.Graphics g);
public bool IsVisible (System.Drawing.Rectangle rect, System.Drawing.Graphics? g);
member this.IsVisible : System.Drawing.Rectangle * System.Drawing.Graphics -> bool
Public Function IsVisible (rect As Rectangle, g As Graphics) As Boolean
Parâmetros
- g
- Graphics
Um Graphics que representa um contexto de gráficos.A Graphics that represents a graphics context.
Retornos
true quando qualquer parte do rect estiver contida dentro deste Region; caso contrário, false.true when any portion of the rect is contained within this Region; otherwise, false.
Exemplos
Para obter um exemplo de código, consulte o IsVisible(RectangleF) método.For a code example, see the IsVisible(RectangleF) method.
Comentários
A transformação atual do contexto de gráficos é usada para calcular a região interior e as coordenadas de retângulo na superfície de desenho.The current transformation of the graphics context is used to compute the region interior and the rectangle coordinates on the drawing surface.
Aplica-se a
IsVisible(PointF, Graphics)
public:
bool IsVisible(System::Drawing::PointF point, System::Drawing::Graphics ^ g);
public bool IsVisible (System.Drawing.PointF point, System.Drawing.Graphics g);
public bool IsVisible (System.Drawing.PointF point, System.Drawing.Graphics? g);
member this.IsVisible : System.Drawing.PointF * System.Drawing.Graphics -> bool
Public Function IsVisible (point As PointF, g As Graphics) As Boolean
Parâmetros
- g
- Graphics
Um Graphics que representa um contexto de gráficos.A Graphics that represents a graphics context.
Retornos
true quando point estiver contido dentro deste Region; caso contrário, false.true when point is contained within this Region; otherwise, false.
Exemplos
Para obter um exemplo de código, consulte o IsVisible(RectangleF) método.For a code example, see the IsVisible(RectangleF) method.
Comentários
A transformação atual do contexto de gráficos é usada para calcular a região interior e as coordenadas de ponto na superfície de desenho.The current transformation of the graphics context is used to compute the region interior and the point coordinates on the drawing surface.
Aplica-se a
IsVisible(Point, Graphics)
public:
bool IsVisible(System::Drawing::Point point, System::Drawing::Graphics ^ g);
public bool IsVisible (System.Drawing.Point point, System.Drawing.Graphics g);
public bool IsVisible (System.Drawing.Point point, System.Drawing.Graphics? g);
member this.IsVisible : System.Drawing.Point * System.Drawing.Graphics -> bool
Public Function IsVisible (point As Point, g As Graphics) As Boolean
Parâmetros
- g
- Graphics
Um Graphics que representa um contexto de gráficos.A Graphics that represents a graphics context.
Retornos
true quando point estiver contido dentro deste Region; caso contrário, false.true when point is contained within this Region; otherwise, false.
Exemplos
Para obter um exemplo de código, consulte o IsVisible(RectangleF) método.For a code example, see the IsVisible(RectangleF) method.
Comentários
A transformação atual do contexto de gráficos é usada para calcular a região interior e as coordenadas de ponto na superfície de desenho.The current transformation of the graphics context is used to compute the region interior and the point coordinates on the drawing surface.
Aplica-se a
IsVisible(RectangleF)
Testa se qualquer parte da estrutura RectangleF especificada está contida dentro deste Region.Tests whether any portion of the specified RectangleF structure is contained within this Region.
public:
bool IsVisible(System::Drawing::RectangleF rect);
public bool IsVisible (System.Drawing.RectangleF rect);
member this.IsVisible : System.Drawing.RectangleF -> bool
Public Function IsVisible (rect As RectangleF) As Boolean
Parâmetros
- rect
- RectangleF
A estrutura RectangleF a ser testada.The RectangleF structure to test.
Retornos
true quando qualquer parte do rect estiver contida dentro deste Region; caso contrário, false.true when any portion of rect is contained within this Region; otherwise, false.
Exemplos
O exemplo de código a seguir foi projetado para uso com Windows Forms, e ele requer PaintEventArgs e , que é um parâmetro do Paint manipulador de eventos.The following code example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler. O código executa as seguintes ações:The code performs the following actions:
Cria o primeiro retângulo e o desenha na tela em azul.Creates the first rectangle and draws it to the screen in blue.
Cria o segundo retângulo e o desenha na tela em vermelho.Creates the second rectangle and draws it to the screen in red.
Cria uma região do primeiro retângulo.Creates a region from the first rectangle.
Determina se qualquer parte do retângulo interseccionada com a região.Determines if any portion of the rectangle intersects with the region.
Exibe o
truefalseresultado ou na tela.Displays thetrueorfalseresult on the screen.
Observe que o retângulo cruza a região, portanto, o resultado é true .Notice that the rectangle intersects the region, so the result is true.
public:
void IsVisible_RectF_Example( PaintEventArgs^ e )
{
// Create the first rectangle and draw it to the screen in blue.
Rectangle regionRect = Rectangle(20,20,100,100);
e->Graphics->DrawRectangle( Pens::Blue, regionRect );
// Create the second rectangle and draw it to the screen in red.
RectangleF myRect = RectangleF(90,30,100,100);
e->Graphics->DrawRectangle( Pens::Red, Rectangle::Round( myRect ) );
// Create a region using the first rectangle.
System::Drawing::Region^ myRegion = gcnew System::Drawing::Region( regionRect );
// Determine if myRect is contained in the region.
bool contained = myRegion->IsVisible( myRect );
// Display the result.
System::Drawing::Font^ myFont = gcnew System::Drawing::Font( "Arial",8 );
SolidBrush^ myBrush = gcnew SolidBrush( Color::Black );
e->Graphics->DrawString( String::Format( "contained = {0}", contained ), myFont, myBrush, PointF(20,140) );
}
public void IsVisible_RectF_Example(PaintEventArgs e)
{
// Create the first rectangle and draw it to the screen in blue.
Rectangle regionRect = new Rectangle(20, 20, 100, 100);
e.Graphics.DrawRectangle(Pens.Blue, regionRect);
// Create the second rectangle and draw it to the screen in red.
RectangleF myRect = new RectangleF(90, 30, 100, 100);
e.Graphics.DrawRectangle(Pens.Red, Rectangle.Round(myRect));
// Create a region using the first rectangle.
Region myRegion = new Region(regionRect);
// Determine if myRect is contained in the region.
bool contained = myRegion.IsVisible(myRect);
// Display the result.
Font myFont = new Font("Arial", 8);
SolidBrush myBrush = new SolidBrush(Color.Black);
e.Graphics.DrawString("contained = " + contained.ToString(),
myFont,
myBrush,
new PointF(20, 140));
}
Public Sub IsVisible_RectF_Example(ByVal e As PaintEventArgs)
' Create the first rectangle and draw it to the screen in blue.
Dim regionRect As New Rectangle(20, 20, 100, 100)
e.Graphics.DrawRectangle(Pens.Blue, regionRect)
' create the second rectangle and draw it to the screen in red.
Dim myRect As New RectangleF(90, 30, 100, 100)
e.Graphics.DrawRectangle(Pens.Red, Rectangle.Round(myRect))
' Create a region using the first rectangle.
Dim myRegion As New [Region](regionRect)
' Determine if myRect is contained in the region.
Dim contained As Boolean = myRegion.IsVisible(myRect)
' Display the result.
Dim myFont As New Font("Arial", 8)
Dim myBrush As New SolidBrush(Color.Black)
e.Graphics.DrawString("contained = " & contained.ToString(), _
myFont, myBrush, New PointF(20, 140))
End Sub
Aplica-se a
IsVisible(Rectangle)
public:
bool IsVisible(System::Drawing::Rectangle rect);
public bool IsVisible (System.Drawing.Rectangle rect);
member this.IsVisible : System.Drawing.Rectangle -> bool
Public Function IsVisible (rect As Rectangle) As Boolean
Parâmetros
Retornos
Este método retornará true quando qualquer parte do rect estiver contida dentro deste Region; caso contrário, false.This method returns true when any portion of rect is contained within this Region; otherwise, false.
Exemplos
Para obter um exemplo de código, consulte o IsVisible(RectangleF) método.For a code example, see the IsVisible(RectangleF) method.
Aplica-se a
IsVisible(PointF)
public:
bool IsVisible(System::Drawing::PointF point);
public bool IsVisible (System.Drawing.PointF point);
member this.IsVisible : System.Drawing.PointF -> bool
Public Function IsVisible (point As PointF) As Boolean
Parâmetros
Retornos
true quando point estiver contido dentro deste Region; caso contrário, false.true when point is contained within this Region; otherwise, false.
Exemplos
Para obter um exemplo de código, consulte o IsVisible(RectangleF) método.For a code example, see the IsVisible(RectangleF) method.
Aplica-se a
IsVisible(RectangleF, Graphics)
Testa se qualquer parte da estrutura RectangleF especificada está contida dentro deste Region quando desenhada usando o Graphics especificado.Tests whether any portion of the specified RectangleF structure is contained within this Region when drawn using the specified Graphics.
public:
bool IsVisible(System::Drawing::RectangleF rect, System::Drawing::Graphics ^ g);
public bool IsVisible (System.Drawing.RectangleF rect, System.Drawing.Graphics g);
public bool IsVisible (System.Drawing.RectangleF rect, System.Drawing.Graphics? g);
member this.IsVisible : System.Drawing.RectangleF * System.Drawing.Graphics -> bool
Public Function IsVisible (rect As RectangleF, g As Graphics) As Boolean
Parâmetros
- rect
- RectangleF
A estrutura RectangleF a ser testada.The RectangleF structure to test.
- g
- Graphics
Um Graphics que representa um contexto de gráficos.A Graphics that represents a graphics context.
Retornos
true quando rect estiver contido dentro deste Region; caso contrário, false.true when rect is contained within this Region; otherwise, false.
Exemplos
Para obter um exemplo de código, consulte o IsVisible(RectangleF) método.For a code example, see the IsVisible(RectangleF) method.
Comentários
A transformação atual do contexto de gráficos é usada para calcular a região interior e as coordenadas de retângulo na superfície de desenho.The current transformation of the graphics context is used to compute the region interior and the rectangle coordinates on the drawing surface.