public void UpdateToolTipText(string toolTipText)
{
System.Workflow.Interop.NativeMethods.TOOLINFO toolInfo = this.GetToolInfo();
toolInfo.hwnd = this.parentHandle;
toolInfo.text = Marshal.StringToBSTR(toolTipText);
System.Workflow.Interop.NativeMethods.SendMessage(base.Handle, System.Workflow.Interop.NativeMethods.TTM_UPDATETIPTEXT, IntPtr.Zero, ref toolInfo);
}
public void UpdateToolTipRectangle(Rectangle rectangle)
{
System.Workflow.Interop.NativeMethods.TOOLINFO toolInfo = this.GetToolInfo();
toolInfo.hwnd = this.parentHandle;
toolInfo.rect.left = rectangle.Left;
toolInfo.rect.top = rectangle.Top;
toolInfo.rect.right = rectangle.Right;
toolInfo.rect.bottom = rectangle.Bottom;
System.Workflow.Interop.NativeMethods.SendMessage(base.Handle, System.Workflow.Interop.NativeMethods.TTM_NEWTOOLRECT, IntPtr.Zero, ref toolInfo);
}
void IDisposable.Dispose()
{
if (this.parentHandle != IntPtr.Zero)
{
System.Workflow.Interop.NativeMethods.TOOLINFO toolInfo = this.GetToolInfo();
toolInfo.hwnd = this.parentHandle;
this.DelTool(toolInfo);
this.DestroyHandle();
this.parentHandle = IntPtr.Zero;
}
}
private System.Workflow.Interop.NativeMethods.TOOLINFO GetToolInfo()
{
System.Workflow.Interop.NativeMethods.TOOLINFO toolinfo;
toolinfo = new System.Workflow.Interop.NativeMethods.TOOLINFO {
size = Marshal.SizeOf(toolinfo),
flags = 0,
hwnd = IntPtr.Zero,
id = IntPtr.Zero
};
toolinfo.rect.left = toolinfo.rect.right = toolinfo.rect.top = toolinfo.rect.bottom = 0;
toolinfo.hinst = IntPtr.Zero;
toolinfo.text = new IntPtr(-1);
toolinfo.lParam = IntPtr.Zero;
return(toolinfo);
}
internal NativeToolTip(IntPtr parentHandle)
{
this.parentHandle = parentHandle;
CreateParams cp = new CreateParams {
ClassName = "tooltips_class32",
Style = -2147483645,
ExStyle = 8,
Parent = this.parentHandle
};
this.CreateHandle(cp);
if (IntPtr.Zero == base.Handle)
{
throw new NullReferenceException(SR.GetString("Error_CreatingToolTip"));
}
System.Workflow.Interop.NativeMethods.TOOLINFO toolInfo = this.GetToolInfo();
toolInfo.flags = 0x110;
toolInfo.hwnd = this.parentHandle;
this.AddTool(toolInfo);
this.Activate(false);
}
private void DelTool(System.Workflow.Interop.NativeMethods.TOOLINFO toolInfo)
{
System.Workflow.Interop.NativeMethods.SendMessage(base.Handle, System.Workflow.Interop.NativeMethods.TTM_DELTOOL, IntPtr.Zero, ref toolInfo);
}
private bool AddTool(System.Workflow.Interop.NativeMethods.TOOLINFO toolInfo)
{
return(System.Workflow.Interop.NativeMethods.SendMessage(base.Handle, System.Workflow.Interop.NativeMethods.TTM_ADDTOOL, IntPtr.Zero, ref toolInfo) != IntPtr.Zero);
}
private System.Workflow.Interop.NativeMethods.TOOLINFO GetToolInfo()
{
System.Workflow.Interop.NativeMethods.TOOLINFO toolinfo;
toolinfo = new System.Workflow.Interop.NativeMethods.TOOLINFO {
size = Marshal.SizeOf(toolinfo),
flags = 0,
hwnd = IntPtr.Zero,
id = IntPtr.Zero
};
toolinfo.rect.left = toolinfo.rect.right = toolinfo.rect.top = toolinfo.rect.bottom = 0;
toolinfo.hinst = IntPtr.Zero;
toolinfo.text = new IntPtr(-1);
toolinfo.lParam = IntPtr.Zero;
return toolinfo;
}
