【www.gdgbn.com--邮件处理】
.net中PictureBox中图片的拖动
首先在Form窗体上放一个PictureBox,并指定一个图片显示
定义一系列变量处理图片拖动
'处理图片拖动
Private m_Leftx As Integer
Private m_Lefty As Integer
Dim m_MousePosX As Integer
Dim m_MousePosY As Integer
Dim m_DriftX As Integer
Dim m_DriftY As Integer
并给赋初值,可以在Form初始化时做
Me.m_Leftx = Me.PictureBox1.Location.X
Me.m_Lefty = Me.PictureBox1.Location.Y
定义处理鼠标按下的事件
'当鼠标按下时,将鼠标变成手形,并且记录下当前鼠标的位置
Private Sub PictureBox1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox1.MouseDown
Me.Cursor = System.Windows.Forms.Cursors.Hand
m_MousePosX = e.X
m_MousePosY = e.Y
End Sub
定义处理鼠标抬起的事件
'处理鼠标按键抬起的事件,根据鼠标按下时保存的鼠标位置,和当前鼠标的位置,计算鼠标移动偏移量,借此调用移动图片的函数,移动图片
Private Sub PictureBox1_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox1.MouseUp
m_DriftX = m_MousePosX - e.X