public void Add(ControlItem item)
{
_items.Add(item);
if (!EnsureCreated())
{
return;
}
var toolInfo = new ComCtl32.ToolInfoWrapper <ErrorWindow>(this, item.Id, ComCtl32.TTF.SUBCLASS, item.Error);
toolInfo.SendMessage(_tipWindow, (User32.WM)ComCtl32.TTM.ADDTOOLW);
Update(timerCaused: false);
}
public void AddToolTip(string toolTipString, IntPtr toolTipId, Rectangle iconBounds)
{
Debug.Assert(tipWindow != null && tipWindow.Handle != IntPtr.Zero, "the tipWindow was not initialized, bailing out");
if (iconBounds.IsEmpty)
{
throw new ArgumentNullException(nameof(iconBounds), SR.DataGridToolTipEmptyIcon);
}
if (toolTipString == null)
{
throw new ArgumentNullException(nameof(toolTipString));
}
var info = new ComCtl32.ToolInfoWrapper(dataGrid, toolTipId, ComCtl32.TTF.SUBCLASS, toolTipString, iconBounds);
info.SendMessage(tipWindow, User32.WindowMessage.TTM_ADDTOOLW);
}
public void Reset()
{
// This resets the tooltip state, which can get broken when we leave the window
// then reenter. So we set the tooltip to null, update the text, then it back to
// what it was, so the tooltip thinks it's back in the regular state again
string oldText = ToolTip;
toolTipText = string.Empty;
for (int i = 0; i < controls.Length; i++)
{
ComCtl32.ToolInfoWrapper <Control> info = GetTOOLINFO(controls[i]);
info.SendMessage(this, User32.WindowMessage.TTM_UPDATETIPTEXTW);
}
toolTipText = oldText;
User32.SendMessageW(this, User32.WindowMessage.TTM_UPDATE);
}
private void SetupToolTip(Control control)
{
if (IsHandleCreated)
{
User32.SetWindowPos(
new HandleRef(this, Handle),
User32.HWND_TOPMOST,
flags: User32.SWP.NOMOVE | User32.SWP.NOSIZE | User32.SWP.NOACTIVATE);
ComCtl32.ToolInfoWrapper <Control> info = GetTOOLINFO(control);
if (info.SendMessage(this, User32.WindowMessage.TTM_ADDTOOLW) == IntPtr.Zero)
{
Debug.Fail($"TTM_ADDTOOL failed for {control.GetType().Name}");
}
// Setting the max width has the added benefit of enabling multiline tool tips
User32.SendMessageW(this, User32.WindowMessage.TTM_SETMAXTIPWIDTH, IntPtr.Zero, (IntPtr)SystemInformation.MaxWindowTrackSize.Width);
}
}
public void Remove(ControlItem item)
{
_items.Remove(item);
if (_tipWindow is not null)
{
var info = new ComCtl32.ToolInfoWrapper <ErrorWindow>(this, item.Id);
info.SendMessage(_tipWindow, (User32.WM)ComCtl32.TTM.DELTOOLW);
}
if (_items.Count == 0)
{
EnsureDestroyed();
}
else
{
Update(timerCaused: false);
}
}
public void RemoveToolTip(IntPtr toolTipId)
{
var info = new ComCtl32.ToolInfoWrapper(dataGrid, toolTipId);
info.SendMessage(tipWindow, User32.WindowMessage.TTM_DELTOOLW);
}
public unsafe void Update(bool timerCaused)
{
IconRegion iconRegion = _provider.Region;
Size size = iconRegion.Size;
_windowBounds = Rectangle.Empty;
for (int i = 0; i < _items.Count; i++)
{
ControlItem item = _items[i];
Rectangle iconBounds = item.GetIconBounds(size);
if (_windowBounds.IsEmpty)
{
_windowBounds = iconBounds;
}
else
{
_windowBounds = Rectangle.Union(_windowBounds, iconBounds);
}
}
using var windowRegion = new Region(new Rectangle(0, 0, 0, 0));
for (int i = 0; i < _items.Count; i++)
{
ControlItem item = _items[i];
Rectangle iconBounds = item.GetIconBounds(size);
iconBounds.X -= _windowBounds.X;
iconBounds.Y -= _windowBounds.Y;
bool showIcon = true;
if (!item.ToolTipShown)
{
switch (_provider.BlinkStyle)
{
case ErrorBlinkStyle.NeverBlink:
// always show icon
break;
case ErrorBlinkStyle.BlinkIfDifferentError:
showIcon = (item.BlinkPhase == 0) || (item.BlinkPhase > 0 && (item.BlinkPhase & 1) == (i & 1));
break;
case ErrorBlinkStyle.AlwaysBlink:
showIcon = ((i & 1) == 0) == _provider._showIcon;
break;
}
}
if (showIcon)
{
iconRegion.Region.Translate(iconBounds.X, iconBounds.Y);
windowRegion.Union(iconRegion.Region);
iconRegion.Region.Translate(-iconBounds.X, -iconBounds.Y);
}
if (_tipWindow is not null)
{
ComCtl32.TTF flags = ComCtl32.TTF.SUBCLASS;
if (_provider.RightToLeft)
{
flags |= ComCtl32.TTF.RTLREADING;
}
var toolInfo = new ComCtl32.ToolInfoWrapper <ErrorWindow>(this, item.Id, flags, item.Error, iconBounds);
toolInfo.SendMessage(_tipWindow, (User32.WM)ComCtl32.TTM.SETTOOLINFOW);
}
if (timerCaused && item.BlinkPhase > 0)
{
item.BlinkPhase--;
}
}
if (timerCaused)
{
_provider._showIcon = !_provider._showIcon;
}
using var hdc = new User32.GetDcScope(Handle);
using var save = new Gdi32.SaveDcScope(hdc);
MirrorDcIfNeeded(hdc);
using Graphics g = hdc.CreateGraphics();
using var windowRegionHandle = new Gdi32.RegionScope(windowRegion, g);
if (User32.SetWindowRgn(this, windowRegionHandle, BOOL.TRUE) != 0)
{
// The HWnd owns the region.
windowRegionHandle.RelinquishOwnership();
}
User32.SetWindowPos(
new HandleRef(this, Handle),
User32.HWND_TOP,
_windowBounds.X,
_windowBounds.Y,
_windowBounds.Width,
_windowBounds.Height,
User32.SWP.NOACTIVATE);
User32.InvalidateRect(new HandleRef(this, Handle), null, BOOL.FALSE);
}
