同时移动2个表格 [英] Moving 2 forms at the same time

问题描述

我在这里有点卡住了.我正在尝试同时移动2个表单，而不使用OnMove，LocationChanged，Docking等.

I'm stuck a little bit here. I'm trying to move 2 forms at the same time without using OnMove, LocationChanged, Docking etc.

与其位置进行交互的唯一方法是覆盖WndProc.可能有帮助的是，表单A是表单B的所有者.因此，每当移动A时，我也要移动B.不是到相同的位置，而是到相同的距离.

The only way to interact with their locations is to override WndProc. Something which might be helpful is that form A is owner of form B. So whenever A is moved I want to move B as well. Not to the same location but the same distance.

    protected override void WndProc(ref Message m)
    {
        if (m.Msg == 0x0084)
        {
              Form[] temp = this.OwnedForms;

              if(temp.Length > 0) 
              {
                    /* moving temp[0] to the same ratio as this form */
              }

              m.Result = (IntPtr)2;
              return;
        }
        base.WndProc(ref m);
    }

A和B具有相同的WndProc，因为它们是同一类的2个对象.

Both A and B have the same WndProc since they are 2 objects from the same class.

推荐答案

我设法解决了这个问题:

I managed to solve the problem:

protected override void WndProc(ref Message m)
{
    Form temp = this.Owner;

    if (m.Msg == 0x0084)
    {
          m.Result = (IntPtr)2;
          return;
    }

    if (m.Msg == 0x0216 && temp != null)
    {
         if (!movedonce)
         {
              oldlocationx = this.Location.X;
              oldlocationy = this.Location.Y;
              movedonce = true;
         }

         temp.Location = new Point(temp.Location.X + this.Location.X - oldlocationx, temp.Location.Y + this.Location.Y - oldlocationy);
         oldlocationx = this.Location.X;
         oldlocationy = this.Location.Y;
    }

    base.WndProc(ref m);
}

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