/// <include file='doc\ToolTip.uex' path='docs/doc[@for="ToolTip.ToolTip1"]/*' />
/// <devdoc>
/// <para>
/// Initializes a new instance of the <see cref='System.Windows.Forms.ToolTip'/> class in its default state.
/// </para>
/// </devdoc>
public ToolTip()
{
window = new ToolTipNativeWindow(this);
auto = true;
delayTimes[NativeMethods.TTDT_AUTOMATIC] = DEFAULT_DELAY;
AdjustBaseFromAuto();
}
public ToolTip()
{
this.tools = new Hashtable();
this.delayTimes = new int[4];
this.auto = true;
this.active = true;
this.backColor = SystemColors.Info;
this.foreColor = SystemColors.InfoText;
this.toolTipTitle = string.Empty;
this.owners = new Hashtable();
this.useAnimation = true;
this.useFading = true;
this.created = new Hashtable();
this.window = new ToolTipNativeWindow(this);
this.auto = true;
this.delayTimes[0] = 500;
this.AdjustBaseFromAuto();
}
public void Dispose() {
if (owner != null) {
owner.LocationChanged -= new EventHandler(FormLocationChanged);
}
if (window.Handle != IntPtr.Zero) {
window.DestroyHandle();
window = null;
}
}
internal SecurityToolTip(Form owner) {
this.owner = owner;
SetupText();
window = new ToolTipNativeWindow(this);
SetupToolTip();
owner.LocationChanged += new EventHandler(FormLocationChanged);
owner.HandleCreated += new EventHandler(FormHandleCreated);
}
/// <include file='doc\StatusBar.uex' path='docs/doc[@for="StatusBar.ControlToolTip.ControlToolTip"]/*' />
/// <devdoc>
/// Creates a new ControlToolTip.
/// </devdoc>
public ControlToolTip(Control parent) {
window = new ToolTipNativeWindow(this);
this.parent = parent;
}
/// <include file='doc\ToolTip.uex' path='docs/doc[@for="ToolTip.ToolTip1"]/*' />
/// <devdoc>
/// <para>
/// Initializes a new instance of the <see cref='System.Windows.Forms.ToolTip'/> class in its default state.
/// </para>
/// </devdoc>
public ToolTip() {
window = new ToolTipNativeWindow(this);
auto = true;
delayTimes[NativeMethods.TTDT_AUTOMATIC] = DEFAULT_DELAY;
AdjustBaseFromAuto();
}
/// <include file='doc\ToolTip.uex' path='docs/doc[@for="ToolTip.Dispose"]/*' />
/// <internalonly/>
/// <devdoc>
/// <para>
/// Disposes of the <see cref='System.Windows.Forms.ToolTip'/>
/// component.
/// </para>
/// </devdoc>
protected override void Dispose(bool disposing) {
if (disposing) {
this.isDisposing = true;
try {
ClearTopLevelControlEvents();
StopTimer();
// always destroy the handle...
//
DestroyHandle();
RemoveAll();
window = null;
//Unhook the DeactiveEvent...
// Lets find the Form for associated Control ...
// and hook up to the Deactivated event to Hide the Shown tooltip
Form baseFrom = TopLevelControl as Form;
if (baseFrom != null) {
baseFrom.Deactivate -= new EventHandler(this.BaseFormDeactivate);
}
}
finally {
this.isDisposing = false;
}
}
base.Dispose(disposing);
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
this.isDisposing = true;
try
{
this.ClearTopLevelControlEvents();
this.StopTimer();
this.DestroyHandle();
this.RemoveAll();
this.window = null;
Form topLevelControl = this.TopLevelControl as Form;
if (topLevelControl != null)
{
topLevelControl.Deactivate -= new EventHandler(this.BaseFormDeactivate);
}
}
finally
{
this.isDisposing = false;
}
}
base.Dispose(disposing);
}
private unsafe void WmWindowPosChanging(ref Message m)
{
if (!this.cancelled)
{
System.Windows.Forms.NativeMethods.WINDOWPOS* lParam = (System.Windows.Forms.NativeMethods.WINDOWPOS*) m.LParam;
Cursor currentInternal = Cursor.CurrentInternal;
Point position = Cursor.Position;
System.Windows.Forms.NativeMethods.TOOLINFO_TOOLTIP toolinfo_tooltip = new System.Windows.Forms.NativeMethods.TOOLINFO_TOOLTIP {
cbSize = Marshal.SizeOf(typeof(System.Windows.Forms.NativeMethods.TOOLINFO_TOOLTIP))
};
if (((int) System.Windows.Forms.UnsafeNativeMethods.SendMessage(new HandleRef(this, this.Handle), System.Windows.Forms.NativeMethods.TTM_GETCURRENTTOOL, 0, toolinfo_tooltip)) != 0)
{
IWin32Window window = (IWin32Window) this.owners[toolinfo_tooltip.hwnd];
if (window == null)
{
window = Control.FromHandleInternal(toolinfo_tooltip.hwnd);
}
if ((window == null) || !this.IsWindowActive(window))
{
return;
}
TipInfo info = null;
if (window != null)
{
info = (TipInfo) this.tools[window];
if (info == null)
{
return;
}
TreeView view = window as TreeView;
if ((view != null) && view.ShowNodeToolTips)
{
return;
}
}
if (this.IsBalloon)
{
lParam->cx += 20;
return;
}
if ((info.TipType & TipInfo.Type.Auto) != TipInfo.Type.None)
{
this.window.DefWndProc(ref m);
return;
}
if (((info.TipType & TipInfo.Type.SemiAbsolute) != TipInfo.Type.None) && (info.Position == Point.Empty))
{
Screen screen = Screen.FromPoint(position);
if (currentInternal != null)
{
lParam->x = position.X;
try
{
System.Windows.Forms.IntSecurity.ObjectFromWin32Handle.Assert();
lParam->y = position.Y;
if ((((lParam->y + lParam->cy) + currentInternal.Size.Height) - currentInternal.HotSpot.Y) > screen.WorkingArea.Bottom)
{
lParam->y = position.Y - lParam->cy;
}
else
{
lParam->y = (position.Y + currentInternal.Size.Height) - currentInternal.HotSpot.Y;
}
}
finally
{
CodeAccessPermission.RevertAssert();
}
}
if ((lParam->x + lParam->cx) > screen.WorkingArea.Right)
{
lParam->x = screen.WorkingArea.Right - lParam->cx;
}
}
else if (((info.TipType & TipInfo.Type.SemiAbsolute) != TipInfo.Type.None) && (info.Position != Point.Empty))
{
Screen screen2 = Screen.FromPoint(info.Position);
lParam->x = info.Position.X;
if ((lParam->x + lParam->cx) > screen2.WorkingArea.Right)
{
lParam->x = screen2.WorkingArea.Right - lParam->cx;
}
lParam->y = info.Position.Y;
if ((lParam->y + lParam->cy) > screen2.WorkingArea.Bottom)
{
lParam->y = screen2.WorkingArea.Bottom - lParam->cy;
}
}
}
m.Result = IntPtr.Zero;
}
}
private void WmPop()
{
System.Windows.Forms.NativeMethods.TOOLINFO_TOOLTIP lParam = new System.Windows.Forms.NativeMethods.TOOLINFO_TOOLTIP {
cbSize = Marshal.SizeOf(typeof(System.Windows.Forms.NativeMethods.TOOLINFO_TOOLTIP))
};
if (((int) System.Windows.Forms.UnsafeNativeMethods.SendMessage(new HandleRef(this, this.Handle), System.Windows.Forms.NativeMethods.TTM_GETCURRENTTOOL, 0, lParam)) != 0)
{
IWin32Window window = (IWin32Window) this.owners[lParam.hwnd];
if (window == null)
{
window = Control.FromHandleInternal(lParam.hwnd);
}
if (window != null)
{
Control key = window as Control;
TipInfo info = (TipInfo) this.tools[window];
if (info != null)
{
if (((info.TipType & TipInfo.Type.Auto) != TipInfo.Type.None) || ((info.TipType & TipInfo.Type.SemiAbsolute) != TipInfo.Type.None))
{
Screen screen = Screen.FromPoint(Cursor.Position);
System.Windows.Forms.UnsafeNativeMethods.SendMessage(new HandleRef(this, this.Handle), 0x418, 0, screen.WorkingArea.Width);
}
if ((info.TipType & TipInfo.Type.Auto) == TipInfo.Type.None)
{
this.tools.Remove(key);
this.owners.Remove(window.Handle);
key.HandleCreated -= new EventHandler(this.HandleCreated);
key.HandleDestroyed -= new EventHandler(this.HandleDestroyed);
this.created.Remove(key);
if (this.originalPopupDelay != 0)
{
this.AutoPopDelay = this.originalPopupDelay;
this.originalPopupDelay = 0;
}
}
else
{
info.TipType = TipInfo.Type.Auto;
info.Position = Point.Empty;
this.tools[key] = info;
}
}
}
}
}
private void WmMove()
{
System.Windows.Forms.NativeMethods.RECT rect = new System.Windows.Forms.NativeMethods.RECT();
System.Windows.Forms.UnsafeNativeMethods.GetWindowRect(new HandleRef(this, this.Handle), ref rect);
System.Windows.Forms.NativeMethods.TOOLINFO_TOOLTIP lParam = new System.Windows.Forms.NativeMethods.TOOLINFO_TOOLTIP {
cbSize = Marshal.SizeOf(typeof(System.Windows.Forms.NativeMethods.TOOLINFO_TOOLTIP))
};
if (((int) System.Windows.Forms.UnsafeNativeMethods.SendMessage(new HandleRef(this, this.Handle), System.Windows.Forms.NativeMethods.TTM_GETCURRENTTOOL, 0, lParam)) != 0)
{
IWin32Window window = (IWin32Window) this.owners[lParam.hwnd];
if (window == null)
{
window = Control.FromHandleInternal(lParam.hwnd);
}
if (window != null)
{
TipInfo info = (TipInfo) this.tools[window];
if ((window != null) && (info != null))
{
TreeView view = window as TreeView;
if (((view == null) || !view.ShowNodeToolTips) && (info.Position != Point.Empty))
{
this.Reposition(info.Position, rect.Size);
}
}
}
}
}
