FrameStyle 列挙体
選択したコントロールのフレーム スタイルを指定します。
<Serializable>
Public Enum FrameStyle
[C#]
[Serializable]
public enum FrameStyle
[C++]
[Serializable]
__value public enum FrameStyle
[JScript]
public
Serializable
enum FrameStyle
解説
この列挙体は、 ControlPaint.DrawReversibleFrame で使用されます。
DrawReversibleFrame は、オブジェクトを選択する場合、またはドラッグ アンド ドロップ操作中に使用されます。
メンバ
| メンバ名 | 説明 |
|---|---|
| Dashed | 細い破線の境界線。 |
| Thick | 太い実線の境界線。 |
使用例
[Visual Basic, C#] ControlPaint.DrawReversibleFrame メソッドで FrameStyle 列挙体を使用する方法を次のコード例に示します。この例を実行するには、次のコードを、Form1 という名前のフォームに貼り付けます。このフォームには、複数のコントロールが配置されています。この例は、MouseDown イベント、MouseMove イベントおよび MouseUp イベントが、この例で定義されているイベント処理メソッドに関連付けられていることを前提としています。
' The following three methods will draw a rectangle and allow
' the user to use the mouse to resize the rectangle. If the
' rectangle intersects a control's client rectangle, the
' control's color will change.
Dim isDrag As Boolean = False
Dim theRectangle As New rectangle(New Point(0, 0), New Size(0, 0))
Dim startPoint As Point
Private Sub Form1_MouseDown(ByVal sender As Object, ByVal e As _
System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseDown
' Set the isDrag variable to true and get the starting point
' by using the PointToScreen method to convert form coordinates to
' screen coordinates.
If (e.Button = MouseButtons.Left) Then
isDrag = True
End If
Dim control As Control = CType(sender, Control)
' Calculate the startPoint by using the PointToScreen
' method.
startPoint = control.PointToScreen(New Point(e.X, e.Y))
End Sub
Private Sub Form1_MouseMove(ByVal sender As Object, ByVal e As _
System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseMove
' If the mouse is being dragged, undraw and redraw the rectangle
' as the mouse moves.
If (isDrag) Then
' Hide the previous rectangle by calling the DrawReversibleFrame
' method with the same parameters.
ControlPaint.DrawReversibleFrame(theRectangle, Me.BackColor, _
FrameStyle.Dashed)
' Calculate the endpoint and dimensions for the new rectangle,
' again using the PointToScreen method.
Dim endPoint As Point = Me.PointToScreen(New Point(e.X, e.Y))
Dim width As Integer = endPoint.X - startPoint.X
Dim height As Integer = endPoint.Y - startPoint.Y
theRectangle = New Rectangle(startPoint.X, startPoint.Y, _
width, height)
' Draw the new rectangle by calling DrawReversibleFrame again.
ControlPaint.DrawReversibleFrame(theRectangle, Me.BackColor, _
FrameStyle.Dashed)
End If
End Sub
Private Sub Form1_MouseUp(ByVal sender As Object, ByVal e As _
System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseUp
' If the MouseUp event occurs, the user is not dragging.
isDrag = False
' Draw the rectangle to be evaluated. Set a dashed frame style
' using the FrameStyle enumeration.
ControlPaint.DrawReversibleFrame(theRectangle, Me.BackColor, _
FrameStyle.Dashed)
' Find out which controls intersect the rectangle and change their color.
' The method uses the RectangleToScreen method to convert the
' Control's client coordinates to screen coordinates.
Dim i As Integer
Dim controlRectangle As Rectangle
For i = 0 To Controls.Count - 1
controlRectangle = Controls(i).RectangleToScreen _
(Controls(i).ClientRectangle)
If controlRectangle.IntersectsWith(theRectangle) Then
Controls(i).BackColor = Color.BurlyWood
End If
Next
' Reset the rectangle.
theRectangle = New Rectangle(0, 0, 0, 0)
End Sub
[C#]
// The following three methods will draw a rectangle and allow
// the user to use the mouse to resize the rectangle. If the
// rectangle intersects a control's client rectangle, the
// control's color will change.
bool isDrag = false;
Rectangle theRectangle = new Rectangle
(new Point(0, 0), new Size(0, 0));
Point startPoint;
private void Form1_MouseDown(object sender,
System.Windows.Forms.MouseEventArgs e)
{
// Set the isDrag variable to true and get the starting point
// by using the PointToScreen method to convert form
// coordinates to screen coordinates.
if (e.Button==MouseButtons.Left)
{
isDrag = true;
}
Control control = (Control) sender;
// Calculate the startPoint by using the PointToScreen
// method.
startPoint = control.PointToScreen(new Point(e.X, e.Y));
}
private void Form1_MouseMove(object sender,
System.Windows.Forms.MouseEventArgs e)
{
// If the mouse is being dragged,
// undraw and redraw the rectangle as the mouse moves.
if (isDrag)
// Hide the previous rectangle by calling the
// DrawReversibleFrame method with the same parameters.
{
ControlPaint.DrawReversibleFrame(theRectangle,
this.BackColor, FrameStyle.Dashed);
// Calculate the endpoint and dimensions for the new
// rectangle, again using the PointToScreen method.
Point endPoint = this.PointToScreen(new Point(e.X, e.Y));
int width = endPoint.X-startPoint.X;
int height = endPoint.Y-startPoint.Y;
theRectangle = new Rectangle(startPoint.X,
startPoint.Y, width, height);
// Draw the new rectangle by calling DrawReversibleFrame
// again.
ControlPaint.DrawReversibleFrame(theRectangle,
this.BackColor, FrameStyle.Dashed);
}
}
private void Form1_MouseUp(object sender,
System.Windows.Forms.MouseEventArgs e)
{
// If the MouseUp event occurs, the user is not dragging.
isDrag = false;
// Draw the rectangle to be evaluated. Set a dashed frame style
// using the FrameStyle enumeration.
ControlPaint.DrawReversibleFrame(theRectangle,
this.BackColor, FrameStyle.Dashed);
// Find out which controls intersect the rectangle and
// change their color. The method uses the RectangleToScreen
// method to convert the Control's client coordinates
// to screen coordinates.
Rectangle controlRectangle;
for(int i = 0; i < Controls.Count; i++)
{
controlRectangle = Controls[i].RectangleToScreen
(Controls[i].ClientRectangle);
if (controlRectangle.IntersectsWith(theRectangle))
{
Controls[i].BackColor = Color.BurlyWood;
}
}
// Reset the rectangle.
theRectangle = new Rectangle(0, 0, 0, 0);
}
[C++, JScript] C++ および JScript のサンプルはありません。Visual Basic および C# のサンプルを表示するには、このページの左上隅にある言語のフィルタ ボタン .gif)
をクリックします。
必要条件
名前空間: System.Windows.Forms
プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ
アセンブリ: System.Windows.Forms (System.Windows.Forms.dll 内)