public string ShowOpenFileDialog(string filter = "All files|*.*")
{
string customFilter = null;
if (filter != null)
{
customFilter = filter.Replace('|', '\0');
if (customFilter.Substring(customFilter.Length - 1) != "\0")
{
customFilter += "\0"; // 最後の区切りが省略されていたなら追加
}
customFilter += "\0"; // 終端
}
WinApi.OpenFileName ofn = new WinApi.OpenFileName();
if (customFilter != null)
{
ofn.filter = customFilter;
}
ofn.dlgOwner = this.hWnd;
if (WinApi.GetOpenFileName(ofn))
{
return(ofn.file);
}
return(null);
}