private void splitContainer1_Panel2_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
Win32ImageList.ImageList_EndDrag();
mouseDownPoint = Point.Empty;
}
}
private void splitContainer1_Panel2_DragEnter(object sender, DragEventArgs e)
{
// ImageList_DragEnterにはクライアント領域における相対座標ではなく
// タイトルバーなどの非クライアント領域を含むWindowにおける相対座標を指定する
Point p = this.PointToClient(Cursor.Position);
int x = Cursor.Position.X - this.Left;
int y = Cursor.Position.Y - this.Top;
// ドラッグ中は半透明イメージを表示し続けたいのでImageList_DragEnterには
// ListBoxのHandleを渡すのでなく、FormのHandleを渡す
Win32ImageList.ImageList_DragEnter(this.Handle, x, y);
}
private void splitContainer1_Panel2_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
var image = avatarlist[0].image;
mouseDownPoint = new Point(e.X - this.Bounds.X - image.Width / 2, e.Y - this.Bounds.Y - image.Height / 2);
// Imageの初期化
imageList.Images.Clear();
imageList.ImageSize = new Size(image.Width, image.Height);
// 半透明イメージの元画像を作成、ImageListに追加
imageList.Images.Add(image);
// ImageList_BeginDragにはドラッグする
// イメージの中における相対座標を指定する
Win32ImageList.ImageList_BeginDrag(imageList.Handle, 0, e.X, e.Y);
int x = Cursor.Position.X + mouseDownPoint.X;
int y = Cursor.Position.Y + mouseDownPoint.Y;
Win32ImageList.ImageList_DragEnter(this.Handle, x, y);
}
}
private void splitContainer1_Panel2_MouseMove(object sender, MouseEventArgs e)
{
if (mouseDownPoint != Point.Empty)
{
int x = Cursor.Position.X + mouseDownPoint.X;
int y = Cursor.Position.Y + mouseDownPoint.Y;
Win32ImageList.ImageList_DragMove(x, y);
/*
* Rectangle dragRegion = new Rectangle(
* mouseDownPoint.X - SystemInformation.DragSize.Width / 2,
* mouseDownPoint.Y - SystemInformation.DragSize.Height / 2,
* SystemInformation.DragSize.Width,
* SystemInformation.DragSize.Height);
* if (!dragRegion.Contains(e.X, e.Y))
* {
*
* Win32ImageList.ImageList_DragMove(e.X, e.Y);
* mouseDownPoint = Point.Empty;
* }
*/
}
}
private void splitContainer1_Panel2_DragLeave(object sender, EventArgs e)
{
Win32ImageList.ImageList_DragLeave(this.Handle);
}