/// <summary>
/// 根据鼠标不同的位置进行大小调整
/// </summary>
private void ChangeFormSize()
{
//为什么要加入一个位置上面的判断呢，这是为了一个细节考虑的，如果不加判断，拖动起来就会感觉怪怪的，自己试一下。
Point mousePos = PointToClient(MousePosition);
//上
if (mousePos.X > m_FormEdge && mousePos.X < this.Width - m_FormEdge && mousePos.Y <= m_FormEdge && b_IsMouseDown && m_MousePosition == VistaMousePosition.NORMAL)
{
m_MousePosition = VistaMousePosition.TOP;
}
//下
else if (mousePos.X > m_FormEdge && mousePos.X < this.Width - m_FormEdge && mousePos.Y > this.Height - m_FormEdge && b_IsMouseDown && m_MousePosition == VistaMousePosition.NORMAL)
{
m_MousePosition = VistaMousePosition.BOTTOM;
}
//左
else if (mousePos.X <= m_FormEdge && mousePos.Y > m_FormEdge && mousePos.Y < this.Height - m_FormEdge && b_IsMouseDown && m_MousePosition == VistaMousePosition.NORMAL)
{
m_MousePosition = VistaMousePosition.LEFT;
}
//右
else if (mousePos.X >= this.Width - m_FormEdge && mousePos.Y > m_FormEdge && mousePos.Y < this.Height - m_FormEdge && b_IsMouseDown && m_MousePosition == VistaMousePosition.NORMAL)
{
m_MousePosition = VistaMousePosition.RIGHT;
}
//左上角
else if (mousePos.X <= m_FormEdge && mousePos.Y <= m_FormEdge && b_IsMouseDown && m_MousePosition == VistaMousePosition.NORMAL)
{
m_MousePosition = VistaMousePosition.LEFTTOP;
}
//右上角
else if (mousePos.X >= this.Width - m_FormEdge && mousePos.Y <= m_FormEdge && b_IsMouseDown && m_MousePosition == VistaMousePosition.NORMAL)
{
m_MousePosition = VistaMousePosition.RIGHTTOP;
}
//左下角
else if (mousePos.X <= m_FormEdge && mousePos.Y >= this.Height - m_FormEdge && b_IsMouseDown && m_MousePosition == VistaMousePosition.NORMAL)
{
m_MousePosition = VistaMousePosition.LEFTBOTTOM;
}
//右下角
else if (mousePos.X >= this.Width - m_FormEdge && mousePos.Y >= this.Height - m_FormEdge && b_IsMouseDown && m_MousePosition == VistaMousePosition.NORMAL)
{
m_MousePosition = VistaMousePosition.RIGHTBOTTOM;
}
//默认
//else
//{
// m_MousePosition = VistaMousePosition.NORMAL;
//}
if (b_IsMouseDown)
{
if (m_MousePosition != VistaMousePosition.NORMAL)
{
int right, bottom;
switch (m_MousePosition)
{
case VistaMousePosition.TOP:
bottom = this.Bottom;
this.Top = MousePosition.Y;
this.Height = bottom - this.Top;
break;
case VistaMousePosition.BOTTOM:
this.Height = MousePosition.Y - this.Top;
break;
case VistaMousePosition.LEFT:
right = this.Right;
this.Left = MousePosition.X;
this.Width = right - this.Left;
break;
case VistaMousePosition.RIGHT:
this.Width = Control.MousePosition.X - this.Left;
break;
case VistaMousePosition.LEFTTOP:
right = this.Right;
bottom = this.Bottom;
this.Top = MousePosition.Y;
this.Height = bottom - this.Top;
this.Left = MousePosition.X;
this.Width = right - this.Left;
break;
case VistaMousePosition.RIGHTTOP:
bottom = this.Bottom;
this.Top = MousePosition.Y;
this.Height = bottom - this.Top;
this.Width = Control.MousePosition.X - this.Left;
break;
case VistaMousePosition.LEFTBOTTOM:
right = this.Right;
this.Height = MousePosition.Y - this.Top;
this.Left = MousePosition.X;
this.Width = right - this.Left;
break;
case VistaMousePosition.RIGHTBOTTOM:
this.Height = MousePosition.Y - this.Top;
this.Width = Control.MousePosition.X - this.Left;
break;
}
Invalidate(false);
b_IsChangingSize = true;
}
}
}
private void VistaForm_MouseUp(object sender, MouseEventArgs e)
{
b_IsChangingSize = false;
b_IsMouseDown = false;
b_IsMoveForm = false;
m_MousePosition = VistaMousePosition.NORMAL;
}
