/// <summary>
/// 列情報を取得します。
/// </summary>
/// <param name="handle">ウィンドウハンドル。</param>
/// <param name="col">列。</param>
/// <param name="column">列情報。</param>
/// <returns>成否。</returns>
private static bool GetColumnInTarget(IntPtr handle, int col, LVCOLUMN column)
{
bool isUni = NativeMethods.IsWindowUnicode(handle);
int LVM_GETCOLUMN = isUni ? LVM_GETCOLUMNW : LVM_GETCOLUMNA;
//文字列取得の場合バッファサイズを指定する。
if ((column.mask & LVCF.TEXT) == LVCF.TEXT)
{
column._core.cchTextMax = 256;
}
while (true)
{
//バッファ確保。
if (0 < column._core.cchTextMax)
{
column._core.pszText = Marshal.AllocCoTaskMem((column._core.cchTextMax + 1) * 8);
}
try
{
if (!NativeDataUtility.ToBool(NativeMethods.SendMessage(handle, LVM_GETCOLUMN, new IntPtr(col), ref column._core)))
{
return false;
}
//文字列取得がない場合は終了。
if (column._core.pszText == IntPtr.Zero)
{
return true;
}
//文字列に変換。
column.pszText = isUni ? Marshal.PtrToStringUni(column._core.pszText) :
Marshal.PtrToStringAnsi(column._core.pszText);
//サイズに収まっていれば終了。
if (column.pszText.Length < column._core.cchTextMax - 1)
{
return true;
}
//リトライ。
column._core.cchTextMax *= 2;
}
finally
{
if (column._core.pszText != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(column._core.pszText);
}
}
}
}
public void TestGetColumnOver256()
{
NativeListControl list = new NativeListControl(testDlg.IdentifyFromDialogId(1037));
StringBuilder overText = new StringBuilder();
for (int i = 0; i < 259; i++)//ツリーの文字数最大がデフォルトで259。
{
overText.Append((i % 10).ToString());
}
//設定
LVCOLUMN_CORE setData = new LVCOLUMN_CORE();
setData.mask = (int)LVCF.TEXT;
setData.iSubItem = 0;
SetLVCOLUMN(list, setData, overText.ToString());
//取得
LVCOLUMN getData = new LVCOLUMN();
getData.mask = LVCF.TEXT;
list.GetColumn(0, getData);
Assert.AreEqual(overText.ToString(), getData.pszText);
}
/// <summary>
/// Obtains column information.
/// </summary>
/// <param name="col">Column.</param>
/// <param name="column">Column information.</param>
/// <returns>Success or failure.</returns>
#else
/// <summary>
/// 列情報を取得します。
/// </summary>
/// <param name="col">列。</param>
/// <param name="column">列情報。</param>
/// <returns>成否。</returns>
#endif
public bool GetColumn(int col, LVCOLUMN column)
{
AppVar inTarget = App.Dim(column);
bool ret = (bool)App[GetType(), "GetColumnInTarget"](Handle, col, inTarget).Core;
LVCOLUMN data = (LVCOLUMN)inTarget.Core;
column._core = data._core;
column._pszText = data._pszText;
return ret;
}
public void TestGetColumn()
{
NativeListControl list = new NativeListControl(testDlg.IdentifyFromDialogId(1037));
LVCOLUMN_CORE setData = new LVCOLUMN_CORE();
LVCOLUMN column = new LVCOLUMN();
foreach (LVCF element in (LVCF[])Enum.GetValues(typeof(LVCF)))
{
setData.mask |= (int)element;
column.mask |= element;
}
//検証データを設定
setData.fmt = 0x4802;
setData.cx = 30;
setData.iSubItem = 1;
setData.iImage = 2;
setData.iOrder = 1;
setData.cxMin = 20;
setData.cxDefault = 25;
setData.cxIdeal = 30;
SetLVCOLUMN(list, setData, "abc");
//取得
list.GetColumn(1, column);
//比較
Assert.AreEqual(setData.fmt, column.fmt);
Assert.AreEqual(setData.cx, column.cx);
Assert.AreEqual("abc", column.pszText);
Assert.AreEqual(setData.iSubItem, column.iSubItem);
Assert.AreEqual(setData.iImage, column.iImage);
Assert.AreEqual(setData.iOrder, column.iOrder);
if (isUni && OSUtility.Is7or8())
{
Assert.AreEqual(setData.cxMin, column.cxMin);
Assert.AreEqual(setData.cxDefault, column.cxDefault);
Assert.AreEqual(setData.cxIdeal, column.cxIdeal);
}
}