OleUIConvert - OLE Programmer's Reference

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OleUIConvert

Invokes the standard Convert dialog box, allowing the user to change the type of a single specified object, or the type of all OLE objects of the specified object's class.

UINT OleUIConvert(

LPOLEUICONVERT lpCV	//Points to initialization structure
);

Parameter
lpCV

Points to an OLEUICONVERT structure that contains information used to initialize the dialog box.

Return Values
Standard Success/Error Definitions

OLEUI_FALSE

Unknown failure (unused).

OLEUI_SUCCESS

No error, same as OLEUI_OK

OLEUI_OK

The user pressed the OK button.

OLEUI_CANCEL

The user pressed the Cancel button.

Standard Field Validation Errors

OLEUI_ERR_STANDARDMIN

Errors common to all dialogs lie in the range OLEUI_ERR_STANDARDMIN to OLEUI_ERR_STANDARDMAX. This value allows the application to test for standard messages in order to display error messages to the user.

OLEUI_ERR_STRUCTURENULL

The pointer to an OLEUIXXX structure passed into the function was NULL.

OLEUI_ERR_STRUCTUREINVALID

Insufficient permissions for read or write access to an OLEUIXXX structure.

OLEUI_ERR_CBSTRUCTINCORRECT

The cbstruct value is incorrect.

OLEUI_ERR_HWNDOWNERINVALID

The hWndOwner value is invalid.

OLEUI_ERR_LPSZCAPTIONINVALID

The lpszCaption value is invalid.

OLEUI_ERR_LPFNHOOKINVALID

The lpfnHook value is invalid.

OLEUI_ERR_HINSTANCEINVALID

The hInstance value is invalid.

OLEUI_ERR_LPSZTEMPLATEINVALID

The lpszTemplate value is invalid.

OLEUI_ERR_HRESOURCEINVALID

The hResource value is invalid.

Initialization Errors

OLEUI_ERR_FINDTEMPLATEFAILURE

Unable to find the dialog template.

OLEUI_ERR_LOADTEMPLATEFAILURE

Unable to load the dialog template.

OLEUI_ERR_DIALOGFAILURE

Dialog initialization failed.

OLEUI_ERR_LOCALMEMALLOC

A call to LocalAlloc or the standard IMalloc allocator failed.

OLEUI_ERR_GLOBALMEMALLOC

A call to GlobalAlloc or the standard IMalloc allocator failed.

OLEUI_ERR_LOADSTRING

Unable to LoadString localized resources from the library.

OLEUI_ERR_OLEMEMALLOC

A call to the standard IMalloc allocator failed.

Function Specific Errors

OLEUI_ERR_STANDARDMAX

OLEUI_CTERR_CLASSIDINVALID

A clsid value was invalid.

OLEUI_CTERR_DVASPECTINVALID

The dvAspect value was invalid. This member specifies the aspect of the object.

OLEUI_CTERR_CBFORMATINVALID

The wFormat value was invalid. This member specifies the data format of the object.

OLEUI_CTERR_STRINGINVALID

A string value (for example, lpszUserType or lpszDefLabel) was invalid.
Comments
OleUIConvert populates the Convert dialog's listbox with object classes by traversing the Registry and looking for entries in the Readable and ReadWritable keys. Every class that includes the original class' default file format in its Readable key is added to the Convert list, and every class that includes the original class' default file format in its ReadWritable key is added to the Activate As list. The Convert list is shown in the dialog's listbox when the Convert radio button is selected (the default selection), and the Activate As list is shown when Activate As is selected.

Note that you can change the type of all objects of a given class only when CF_CONVERTONLY is not specified.

The convert command, which invokes this function, should only be made available to the user if OleUIConvertOrActivateAs returns S_OK.

See Also
OLEUICONVERT, OleUICanConvertOrActivateAs

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