拖放Windows窗體按鈕

Question

我創建了一個新的Windows窗體應用程序。我將一個按鈕拖到窗體上。 我需要在運行時將此按鈕拖放到此表單中的另一個位置。 任何代碼片段或鏈接表示讚賞。

在來這裏之前我花了半個小時尋找。

Answer 1

你可以像這樣開始：

bool isDragged = false; 
    Point ptOffset; 
    private void button1_MouseDown(object sender, MouseEventArgs e) 
    { 
    if (e.Button == MouseButtons.Left) 
    { 
     isDragged = true; 
     Point ptStartPosition = button1.PointToScreen(new Point(e.X, e.Y)); 

     ptOffset = new Point(); 
     ptOffset.X = button1.Location.X - ptStartPosition.X; 
     ptOffset.Y = button1.Location.Y - ptStartPosition.Y; 
    } 
    else 
    { 
     isDragged = false; 
    } 
    } 

    private void button1_MouseMove(object sender, MouseEventArgs e) 
    { 
    if (isDragged) 
    { 
     Point newPoint = button1.PointToScreen(new Point(e.X, e.Y)); 
     newPoint.Offset(ptOffset); 
     button1.Location = newPoint; 
    } 
    } 

    private void button1_MouseUp(object sender, MouseEventArgs e) 
    { 
    isDragged = false; 
    }