public void RemoveToolTip(IntPtr toolTipId)
{
NativeMethods.TOOLINFO_T toolInfo = new NativeMethods.TOOLINFO_T();
toolInfo.cbSize = Marshal.SizeOf(toolInfo);
toolInfo.hwnd = dataGrid.Handle;
toolInfo.uId = toolTipId;
UnsafeNativeMethods.SendMessage(new HandleRef(tipWindow, tipWindow.Handle), NativeMethods.TTM_DELTOOL, 0, toolInfo);
}
// this function will add a toolTip to the
// windows system
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 (toolTipString == null)
throw new ArgumentNullException("toolTipString");
if (iconBounds.IsEmpty)
throw new ArgumentNullException("iconBounds", SR.GetString(SR.DataGridToolTipEmptyIcon));
NativeMethods.TOOLINFO_T toolInfo = new NativeMethods.TOOLINFO_T();
toolInfo.cbSize = Marshal.SizeOf(toolInfo);
toolInfo.hwnd = dataGrid.Handle;
toolInfo.uId = toolTipId;
toolInfo.lpszText = toolTipString;
toolInfo.rect = NativeMethods.RECT.FromXYWH(iconBounds.X, iconBounds.Y, iconBounds.Width, iconBounds.Height);
toolInfo.uFlags = NativeMethods.TTF_SUBCLASS;
UnsafeNativeMethods.SendMessage(new HandleRef(tipWindow, tipWindow.Handle), NativeMethods.TTM_ADDTOOL, 0, toolInfo);
}
private NativeMethods.TOOLINFO_T GetTOOLINFO() {
NativeMethods.TOOLINFO_T toolInfo;
toolInfo = new NativeMethods.TOOLINFO_T();
toolInfo.cbSize = Marshal.SizeOf(typeof(NativeMethods.TOOLINFO_T));
toolInfo.uFlags |= NativeMethods.TTF_SUBCLASS;
toolInfo.lpszText = this.toolTipText;
if (owner.RightToLeft == RightToLeft.Yes) {
toolInfo.uFlags |= NativeMethods.TTF_RTLREADING;
}
if (!first) {
toolInfo.uFlags |= NativeMethods.TTF_TRANSPARENT;
toolInfo.hwnd = owner.Handle;
Size s = SystemInformation.CaptionButtonSize;
Rectangle r = new Rectangle(owner.Left, owner.Top, s.Width, SystemInformation.CaptionHeight);
r = owner.RectangleToClient(r);
r.Width -= r.X;
r.Y += 1;
toolInfo.rect = NativeMethods.RECT.FromXYWH(r.X, r.Y, r.Width, r.Height);
toolInfo.uId = IntPtr.Zero;
}
else {
toolInfo.uFlags |= NativeMethods.TTF_IDISHWND | NativeMethods.TTF_TRACK;
toolInfo.hwnd = IntPtr.Zero;
toolInfo.uId = owner.Handle;
}
return toolInfo;
}
/// <include file='doc\StatusBar.uex' path='docs/doc[@for="StatusBar.ControlToolTip.GetMinTOOLINFO"]/*' />
/// <devdoc>
/// Returns a new instance of the TOOLINFO_T structure with the minimum
/// required data to uniquely identify a region. This is used primarily
/// for delete operations. NOTE: This cannot force the creation of a handle.
/// </devdoc>
private NativeMethods.TOOLINFO_T GetMinTOOLINFO(Tool tool) {
NativeMethods.TOOLINFO_T ti = new NativeMethods.TOOLINFO_T();
ti.cbSize = Marshal.SizeOf(typeof(NativeMethods.TOOLINFO_T));
ti.hwnd = parent.Handle;
if ((int)tool.id < 0) {
AssignId(tool);
}
StatusBar p = (StatusBar)parent;
if (p != null && p.ToolTipSet) {
ti.uId = parent.Handle;
}
else {
ti.uId = tool.id;
}
return ti;
}
//
// METHODS
//
/// <include file='doc\ErrorProvider.uex' path='docs/doc[@for="ErrorProvider.ErrorWindow.Add"]/*' />
/// <devdoc>
/// This is called when a control would like to show an error icon.
/// </devdoc>
public void Add(ControlItem item) {
items.Add(item);
if (!EnsureCreated())
{
return;
}
NativeMethods.TOOLINFO_T toolInfo = new NativeMethods.TOOLINFO_T();
toolInfo.cbSize = Marshal.SizeOf(toolInfo);
toolInfo.hwnd = Handle;
toolInfo.uId = item.Id;
toolInfo.lpszText = item.Error;
toolInfo.uFlags = NativeMethods.TTF_SUBCLASS;
UnsafeNativeMethods.SendMessage(new HandleRef(tipWindow, tipWindow.Handle), NativeMethods.TTM_ADDTOOL, 0, toolInfo);
Update(false /*timerCaused*/);
}
/// <include file='doc\ErrorProvider.uex' path='docs/doc[@for="ErrorProvider.ErrorWindow.Update"]/*' />
/// <devdoc>
/// Move and size the error window, compute and set the window region,
/// set the tooltip rectangles and descriptions. This basically brings
/// the error window up to date with the internal data structures.
/// </devdoc>
public 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 = (ControlItem)items[i];
Rectangle iconBounds = item.GetIconBounds(size);
if (windowBounds.IsEmpty)
windowBounds = iconBounds;
else
windowBounds = Rectangle.Union(windowBounds, iconBounds);
}
Region windowRegion = new Region(new Rectangle(0, 0, 0, 0));
IntPtr windowRegionHandle = IntPtr.Zero;
try {
for (int i = 0; i < items.Count; i++) {
ControlItem item = (ControlItem)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 != null) {
NativeMethods.TOOLINFO_T toolInfo = new NativeMethods.TOOLINFO_T();
toolInfo.cbSize = Marshal.SizeOf(toolInfo);
toolInfo.hwnd = Handle;
toolInfo.uId = item.Id;
toolInfo.lpszText = item.Error;
toolInfo.rect = NativeMethods.RECT.FromXYWH(iconBounds.X, iconBounds.Y, iconBounds.Width, iconBounds.Height);
toolInfo.uFlags = NativeMethods.TTF_SUBCLASS;
if (provider.RightToLeft) {
toolInfo.uFlags |= NativeMethods.TTF_RTLREADING;
}
UnsafeNativeMethods.SendMessage(new HandleRef(tipWindow, tipWindow.Handle), NativeMethods.TTM_SETTOOLINFO, 0, toolInfo);
}
if (timerCaused && item.BlinkPhase > 0) {
item.BlinkPhase--;
}
}
if (timerCaused) {
provider.showIcon = !provider.showIcon;
}
DeviceContext dc = null;
dc = DeviceContext.FromHwnd(this.Handle);
try {
CreateMirrorDC(dc.Hdc, windowBounds.Width);
Graphics graphics = Graphics.FromHdcInternal(mirrordc.Hdc);
try {
windowRegionHandle = windowRegion.GetHrgn(graphics);
System.Internal.HandleCollector.Add(windowRegionHandle, NativeMethods.CommonHandles.GDI);
}
finally {
graphics.Dispose();
RestoreMirrorDC();
}
if (UnsafeNativeMethods.SetWindowRgn(new HandleRef(this, Handle), new HandleRef(windowRegion, windowRegionHandle), true) != 0) {
//The HWnd owns the region.
windowRegionHandle = IntPtr.Zero;
}
}
finally {
if (dc != null) {
dc.Dispose();
}
}
}
finally {
windowRegion.Dispose();
if (windowRegionHandle != IntPtr.Zero) {
SafeNativeMethods.DeleteObject(new HandleRef(null, windowRegionHandle));
}
}
SafeNativeMethods.SetWindowPos(new HandleRef(this, Handle), NativeMethods.HWND_TOP, windowBounds.X, windowBounds.Y,
windowBounds.Width, windowBounds.Height, NativeMethods.SWP_NOACTIVATE);
SafeNativeMethods.InvalidateRect(new HandleRef(this, Handle), null, false);
}
/// <include file='doc\ErrorProvider.uex' path='docs/doc[@for="ErrorProvider.ErrorWindow.Remove"]/*' />
/// <devdoc>
/// This is called when a control no longer needs to display an error icon.
/// </devdoc>
public void Remove(ControlItem item) {
items.Remove(item);
if (tipWindow != null) {
NativeMethods.TOOLINFO_T toolInfo = new NativeMethods.TOOLINFO_T();
toolInfo.cbSize = Marshal.SizeOf(toolInfo);
toolInfo.hwnd = Handle;
toolInfo.uId = item.Id;
UnsafeNativeMethods.SendMessage(new HandleRef(tipWindow, tipWindow.Handle), NativeMethods.TTM_DELTOOL, 0, toolInfo);
}
if (items.Count == 0) {
EnsureDestroyed();
}
else {
Update(false /*timerCaused*/);
}
}
private NativeMethods.TOOLINFO_T GetTOOLINFO(Control c) {
int index = Array.IndexOf(controls, c);
Debug.Assert(index != -1, "Failed to find control in tooltip array");
if (toolInfos[index] == null){
toolInfos[index] = new NativeMethods.TOOLINFO_T();
toolInfos[index].cbSize = Marshal.SizeOf(typeof(NativeMethods.TOOLINFO_T));
toolInfos[index].uFlags |= NativeMethods.TTF_IDISHWND | NativeMethods.TTF_TRANSPARENT | NativeMethods.TTF_SUBCLASS;
}
toolInfos[index].lpszText = this.toolTipText;
toolInfos[index].hwnd = c.Handle;
toolInfos[index].uId = c.Handle;
return toolInfos[index];
}
