/// <summary>
/// Base ctor
/// </summary>
protected BaseCAMarshaler(NativeMethods.CA_STRUCT caStruct) : base()
{
if (caStruct == null)
{
count = 0;
Debug.WriteLineIf(CAMarshalSwitch.TraceVerbose, "BaseCAMarshaler: null passed in!");
}
// first 4 bytes is the count
count = caStruct.cElems;
caArrayAddress = caStruct.pElems;
Debug.WriteLineIf(CAMarshalSwitch.TraceVerbose, "Marshaling " + count.ToString(CultureInfo.InvariantCulture) + " items of type " + ItemType.Name);
}
public Int32CAMarshaler(NativeMethods.CA_STRUCT caStruct) : base(caStruct)
{
}
public OleStrCAMarshaler(NativeMethods.CA_STRUCT caAddr) : base(caAddr)
{
}
private void OnGetTypeConverterAndTypeEditor(Com2PropertyDescriptor sender, GetTypeConverterAndTypeEditorEvent gveevent)
{
if (sender.TargetObject is NativeMethods.IPerPropertyBrowsing)
{
NativeMethods.IPerPropertyBrowsing ppb = (NativeMethods.IPerPropertyBrowsing)sender.TargetObject;
bool hasStrings = false;
// check for enums
NativeMethods.CA_STRUCT caStrings = new NativeMethods.CA_STRUCT();
NativeMethods.CA_STRUCT caCookies = new NativeMethods.CA_STRUCT();
int hr = NativeMethods.S_OK;
try {
hr = ppb.GetPredefinedStrings(sender.DISPID, caStrings, caCookies);
}
catch (ExternalException ex) {
hr = ex.ErrorCode;
Debug.Fail("An exception occurred inside IPerPropertyBrowsing::GetPredefinedStrings(dispid=" + sender.DISPID + "), object type=" + new ComNativeDescriptor().GetClassName(ppb) + ". This is caused by an exception (usually an AV) inside the object being browsed, and is not a problem in the properties window.");
}
// Terminate the existing editor if we created the current one
// so if the items have disappeared, we don't hold onto the old
// items.
if (gveevent.TypeConverter is Com2IPerPropertyEnumConverter)
{
gveevent.TypeConverter = null;
}
if (hr != NativeMethods.S_OK)
{
hasStrings = false;
}
else
{
hasStrings = true;
}
if (hasStrings)
{
OleStrCAMarshaler stringMarshaler = new OleStrCAMarshaler(caStrings);
Int32CAMarshaler intMarshaler = new Int32CAMarshaler(caCookies);
if (stringMarshaler.Count > 0 && intMarshaler.Count > 0)
{
gveevent.TypeConverter = new Com2IPerPropertyEnumConverter(new Com2IPerPropertyBrowsingEnum(sender, this, stringMarshaler, intMarshaler, true));
}
else
{
//hasStrings = false;
}
}
// if we didn't get any strings, try the proppage edtior
//
if (!hasStrings)
{
// this is a _bit_ of a backwards-compat work around...
// many older ActiveX controls will show a property page
// for all properties since the old grid would only put up the
// [...] button for "(Custom)". If we have a conversion editor,
// don't allow this to override it...
//
if (sender.ConvertingNativeType)
{
return;
}
Guid g = GetPropertyPageGuid(ppb, sender.DISPID);
if (!Guid.Empty.Equals(g))
{
gveevent.TypeEditor = new Com2PropertyPageUITypeEditor(sender, g, (UITypeEditor)gveevent.TypeEditor);
}
}
}
}
private void OnGetTypeConverterAndTypeEditor(Com2PropertyDescriptor sender, GetTypeConverterAndTypeEditorEvent gveevent) {
if (sender.TargetObject is NativeMethods.IPerPropertyBrowsing) {
NativeMethods.IPerPropertyBrowsing ppb = (NativeMethods.IPerPropertyBrowsing)sender.TargetObject;
bool hasStrings = false;
// check for enums
NativeMethods.CA_STRUCT caStrings = new NativeMethods.CA_STRUCT();
NativeMethods.CA_STRUCT caCookies = new NativeMethods.CA_STRUCT();
int hr = NativeMethods.S_OK;
try {
hr = ppb.GetPredefinedStrings(sender.DISPID, caStrings, caCookies);
}
catch(ExternalException ex){
hr = ex.ErrorCode;
Debug.Fail("An exception occurred inside IPerPropertyBrowsing::GetPredefinedStrings(dispid=" + sender.DISPID + "), object type=" + new ComNativeDescriptor().GetClassName(ppb) + ". This is caused by an exception (usually an AV) inside the object being browsed, and is not a problem in the properties window.");
}
// Terminate the existing editor if we created the current one
// so if the items have disappeared, we don't hold onto the old
// items.
if (gveevent.TypeConverter is Com2IPerPropertyEnumConverter) {
gveevent.TypeConverter = null;
}
if (hr != NativeMethods.S_OK) {
hasStrings = false;
}
else {
hasStrings = true;
}
if (hasStrings) {
OleStrCAMarshaler stringMarshaler = new OleStrCAMarshaler(caStrings);
Int32CAMarshaler intMarshaler = new Int32CAMarshaler(caCookies);
if (stringMarshaler.Count > 0 && intMarshaler.Count > 0) {
gveevent.TypeConverter = new Com2IPerPropertyEnumConverter(new Com2IPerPropertyBrowsingEnum(sender, this, stringMarshaler, intMarshaler, true));
}
else {
//hasStrings = false;
}
}
// if we didn't get any strings, try the proppage edtior
//
if (!hasStrings){
// this is a _bit_ of a backwards-compat work around...
// many older ActiveX controls will show a property page
// for all properties since the old grid would only put up the
// [...] button for "(Custom)". If we have a conversion editor,
// don't allow this to override it...
//
if (sender.ConvertingNativeType){
return;
}
Guid g = GetPropertyPageGuid(ppb, sender.DISPID);
if (!Guid.Empty.Equals(g)){
gveevent.TypeEditor = new Com2PropertyPageUITypeEditor(sender, g, (UITypeEditor)gveevent.TypeEditor);
}
}
}
}