public static extern int SetSelected
(
IntPtr hWnd,
int Msg,
int wParam,
ref LVITEMW lvitem
);
public unsafe void UpdateText_should_throw_AOOR_if_cchTextMax_less_than_1()
{
var lvi = new LVITEMW
{
cchTextMax = 0,
};
Assert.Throws <ArgumentOutOfRangeException>(() => lvi.UpdateText("012345"));
}
private int DisplayIndexToID(int displayIndex)
{
Debug.Assert(!owner.VirtualMode, "in virtual mode, this method does not make any sense");
if (owner.IsHandleCreated && !owner.ListViewHandleDestroyed)
{
// Obtain internal index of the item
var lvItem = new LVITEMW
{
mask = LVIF.PARAM,
iItem = displayIndex
};
User32.SendMessageW(owner, (User32.WM)LVM.GETITEMW, IntPtr.Zero, ref lvItem);
return((int)lvItem.lParam);
}
else
{
return(this[displayIndex].ID);
}
}
public unsafe void UpdateText_should_set_null_terminated_text()
{
string originalText = "abcdefghi";
fixed(char *pOriginalText = originalText)
{
var lvi = new LVITEMW
{
cchTextMax = originalText.Length,
pszText = pOriginalText
};
lvi.UpdateText("012345");
var sText = new ReadOnlySpan <char>(lvi.pszText, lvi.cchTextMax);
Assert.Equal(sText.ToArray(), new char[] { '0', '1', '2', '3', '4', '5', '\0' });
}
}
public unsafe void UpdateText_should_limit_input_text_to_cchTextMax_less_1_text_longer(string originalText, int maxLength, string newText, string expected)
{
fixed(char *pOriginalText = originalText)
{
var lvi = new LVITEMW
{
cchTextMax = maxLength,
pszText = pOriginalText
};
lvi.UpdateText(newText);
var text = new string(lvi.pszText);
Assert.Equal(expected, text);
Assert.Equal(maxLength - 1, text.Length);
Assert.Equal(text.Length + 1, lvi.cchTextMax);
Assert.Equal(maxLength, lvi.cchTextMax);
}
}
public unsafe void UpdateText_should_set_cchTextMax_to_input_text_length_plus_1_if_text_shorter()
{
string originalText = "abcdefghi";
fixed(char *pOriginalText = originalText)
{
var lvi = new LVITEMW
{
cchTextMax = originalText.Length,
pszText = pOriginalText
};
lvi.UpdateText("012345");
var sText = new ReadOnlySpan <char>(lvi.pszText, lvi.cchTextMax);
var text = new string(lvi.pszText);
Assert.Equal("012345", text);
Assert.Equal(lvi.cchTextMax, text.Length + 1);
}
}
public static extern IntPtr SendMessage_LvItem(IntPtr hWnd, int Msg, IntPtr nIndex, ref LVITEMW pItem);