UITypeEditor issue

[David W. Simmonds]

I have a property that uses my own editor. It brings up a modal dialog. When
I hit ok on the dialog, the PropertyGrid does not send out a
PropertyValueChanged notification. Is there anything special I have to do to
make this happen?

public __gc class CPictureEditor : public
System:rawing:esign::UITypeEditor
{
public:
virtual bool
GetPaintValueSupported(System::ComponentModel::ITypeDescriptorContext*
context);
virtual bool GetPaintValueSupported();
virtual void PaintValue(System::Object* value,
System:rawing::Graphics* canvas, System:rawing::Rectangle rectangle);
virtual void PaintValue(PaintValueEventArgs* e);
virtual System::Object*
EditValue(System::ComponentModel::ITypeDescriptorContext* context,
System::IServiceProvider* provider, System::Object* value);
virtual System:rawing:esign::UITypeEditorEditStyle
GetEditStyle(System::ComponentModel::ITypeDescriptorContext* context);
};

public __gc class CPictureConverter : public
System::ComponentModel::TypeConverter
{
public:
virtual bool
GetStandardValuesSupported(System::ComponentModel::ITypeDescriptorContext*
context)
{ return false; }
virtual bool
GetStandardValuesExclusive(System::ComponentModel::ITypeDescriptorContext*
context)
{ return true; }
virtual bool
CanConvertFrom(System::ComponentModel::ITypeDescriptorContext* context,
System::Type* t);
virtual bool
CanConvertTo(System::ComponentModel::ITypeDescriptorContext* context,
System::Type* t);
virtual Object*
ConvertFrom(System::ComponentModel::ITypeDescriptorContext* context,
System::Globalization::CultureInfo* culture, System::Object* o);
virtual Object*
ConvertTo(System::ComponentModel::ITypeDescriptorContext* context,
System::Globalization::CultureInfo* culture, System::Object* o,
System::Type* t);
};

[System::ComponentModel::EditorAttribute(__typeof(CPictureEditor),
__typeof(System:rawing:esign::UITypeEditor))]
[System::ComponentModel::TypeConverterAttribute(__typeof(CPictureConverter))
]
[Serializable]
public __gc class PictureObj : public
System::Runtime::Serialization::ISerializable
{
private:
CPicture* m_pPicture;
public:
PictureObj()
{
m_pPicture = new CPicture;
}
~PictureObj()
{
delete m_pPicture;
}
PictureObj(System::Runtime::Serialization::SerializationInfo *si,
System::Runtime::Serialization::StreamingContext sc)
{
m_pPicture = new CPicture;
SetObjectData(si, sc);
}
void SetPicture(CPicture* pic) { *m_pPicture = *pic; }
CPicture* GetPicture() { return m_pPicture; }
void GetObjectData(System::Runtime::Serialization::SerializationInfo
*si,
System::Runtime::Serialization::StreamingContext sc);
void SetObjectData(System::Runtime::Serialization::SerializationInfo
*si,
System::Runtime::Serialization::StreamingContext sc);

__property IPicture* get_Picture() { return m_pPicture->m_pImage; }
__property void set_Picture(IPicture* value) { m_pPicture->m_pImage =
value; }
__property System::String* get_ImageExt() { return new
System::String(m_pPicture->m_strImageExt); }
__property void set_ImageExt(System::String* value) {
m_pPicture->m_strImageExt = value; }
};

bool CPictureEditor::GetPaintValueSupported(ITypeDescriptorContext* context)
{
return GetPaintValueSupported();
}
bool CPictureEditor::GetPaintValueSupported()
{
return true;
}
void CPictureEditor:aintValue(PaintValueEventArgs* e)
{
PaintValue(e->Value, e->Graphics, e->Bounds);
}
void CPictureEditor:aintValue(Object* value, Graphics* canvas,
System:rawing::Rectangle rectangle)
{
if (value != NULL)
{
PictureObj* pic = static_cast<PictureObj*>(value);
HBITMAP hBitmap; pic->Picture->get_Handle((OLE_HANDLE*)&hBitmap);
Image* image = Image::FromHbitmap(hBitmap);
if (image != NULL)
canvas->DrawImage(image, rectangle);
}
}
Object* CPictureEditor::EditValue(ITypeDescriptorContext* context,
System::IServiceProvider* provider, Object* value)
{
IWindowsFormsEditorService* pService =
static_cast<IWindowsFormsEditorService*>(provider->GetService(__typeof(IWind
owsFormsEditorService)));
if (pService != NULL)
{
CPictureDlg dlg(AfxGetMainWnd());
if (value != NULL)
{
PictureObj* pic = static_cast<PictureObj*>(value);
dlg.m_Picture = *pic->GetPicture();
}
if (dlg.DoModal() == IDOK)
{
PictureObj* pic = new PictureObj;
pic->SetPicture(&dlg.m_Picture);
return pic;
}
else
return value;
}
return NULL;
}
UITypeEditorEditStyle CPictureEditor::GetEditStyle(ITypeDescriptorContext*
context)
{
return Modal;
}

 

[Xin Huang]

Sorry for slow response. I'm reviewing this problem but found the code is
not compilable. Can you re-post the code that can be directly compiled?

Regards,
Xin

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