public void ToolTip_WmShow_Invokes_AnnounceText_WithExpectedText_ForTabControlTabs()
{
Mock <TabControl> mockTabControl = new() { CallBase = true, Object = { ShowToolTips = true } };
Mock <Control.ControlAccessibleObject> mockAccessibleObject = new(MockBehavior.Strict, mockTabControl.Object);
mockAccessibleObject
.Setup(a => a.InternalRaiseAutomationNotification(
It.IsAny <AutomationNotificationKind>(),
It.IsAny <AutomationNotificationProcessing>(),
It.IsAny <string>()))
.Returns(true);
mockTabControl.Protected().Setup <AccessibleObject>("CreateAccessibilityInstance").Returns(mockAccessibleObject.Object);
// We need a Form because tooltips don't work on controls without a valid parent.
using Form form = new();
using ToolTip toolTip = new();
using TabControl tabControl = mockTabControl.Object;
using TabPage tabPage = new() { ToolTipText = "TabPage" };
toolTip.SetToolTip(tabControl, "TabControl");
tabControl.Controls.Add(tabPage);
form.Controls.Add(tabControl);
form.Show();
Assert.NotEqual(IntPtr.Zero, tabControl.InternalHandle);
Assert.True(toolTip.GetHandleCreated());
// Enforce AccessibilityObject creation.
Assert.Equal(mockAccessibleObject.Object, tabControl.AccessibilityObject);
// Post MOUSEMOVE to the tooltip queue and then just remove it from the queue without handling.
// This will update the point returned by GetMessagePos which is used by TTM.POPUP to determine the tool to display.
Assert.True(User32.PostMessageW(toolTip, User32.WM.MOUSEMOVE, lParam: PARAM.FromPoint(tabPage.GetToolNativeScreenRectangle().Location)).IsTrue());
User32.MSG msg = default;
Assert.True(User32.PeekMessageW(ref msg, toolTip, User32.WM.MOUSEMOVE, User32.WM.MOUSEMOVE, User32.PM.REMOVE).IsTrue());
// Show the tooltip.
User32.SendMessageW(toolTip, (User32.WM)ComCtl32.TTM.POPUP);
mockAccessibleObject.Verify(a => a.InternalRaiseAutomationNotification(
AutomationNotificationKind.ActionCompleted,
AutomationNotificationProcessing.All,
$" {tabPage.ToolTipText}"),
Times.Once);
}
private int GetCharIndexFromPosition(Point pt)
{
int index = (int)User32.SendMessageW(_owningChildEdit, (WM)EM.CHARFROMPOS, 0, PARAM.FromPoint(pt));
index = PARAM.LOWORD(index);
if (index < 0)
{
index = 0;
}
else
{
string t = Text;
// EM_CHARFROMPOS will return an invalid number if the last character in the RichEdit
// is a newline.
//
if (index >= t.Length)
{
index = Math.Max(t.Length - 1, 0);
}
}
return(index);
}