我正在尝试使用以下代码以编程方式将DeskBand对象添加到系统托盘:
[ComImport, Guid("6D67E846-5B9C-4db8-9CBC-DDE12F4254F1"),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface ITrayDeskband
{
[PreserveSig]
int ShowDeskBand([In, MarshalAs(UnmanagedType.Struct)] ref Guid clsid);
[PreserveSig]
int HideDeskBand([In, MarshalAs(UnmanagedType.Struct)] ref Guid clsid);
[PreserveSig]
int IsDeskBandShown([In, MarshalAs(UnmanagedType.Struct)] ref Guid clsid);
[PreserveSig]
int DeskBandRegistrationChanged();
}
private void ShowDeskBand()
{
ITrayDeskband obj = null;
Type trayDeskbandType = System.Type.GetTypeFromCLSID(new Guid("E6442437-6C68-4f52-94DD-2CFED267EFB9"));
try
{
Guid deskbandGuid = new Guid("FE0829F8-EDFA-46B6-87E0-636C8D953E33"); // My Deskband | TestToolbar
obj = (ITrayDeskband)Activator.CreateInstance(trayDeskbandType);
obj.DeskBandRegistrationChanged();
int hr = obj.ShowDeskBand(ref deskbandGuid);
if (hr != 0)
{
throw new Exception("Error while trying to show deskband: " + hr);
}
obj.DeskBandRegistrationChanged();
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
finally
{
if (obj != null && Marshal.IsComObject(obj))
Marshal.ReleaseComObject(obj);
}
}
来源:http://www.pinvoke.net/default.aspx/Interfaces/ITrayDeskband.html
我的DeskBand对象是从此示例的“BandObjectsLib”创建的:http://www.codeproject.com/Articles/14141/Band-Objects-NET-2-0-Redux
看起来像这样:
[Guid("FE0829F8-EDFA-46B6-87E0-636C8D953E33")]
[BandObject("TestToolbar", BandObjectStyle.Horizontal | BandObjectStyle.TaskbarToolBar, HelpText = "Testing this toolbar")]
public class TestToolbar : BandObject
{
public TestToolbar()
{
ProgressBar pb = new ProgressBar();
pb.Maximum = 100;
pb.Minimum = 0;
pb.Value = 50;
this.Controls.AddRange(new System.Windows.Forms.Control[] { pb });
}
}
然而,当我尝试添加DeskBand对象时,我得到的是我的异常,告诉我错误代码: -2147467259 此错误代码转换为0x80004005,并根据MSDN即E_FAIL:http://msdn.microsoft.com/en-us/library/windows/desktop/aa378137.aspx
我基本上都被困在这里,因为这不是我的专业领域。我希望有人可能更有经验,可以帮助我吗?提前谢谢!
答案 0 :(得分:0)
您必须注册DLL(安装MSI或使用regasm)才能使代码正常工作。