[JNA 4.1.0] Calling COMLateBindingObject.setProperty throws java.lang.IllegalArgumentException

[Athena]

Hi,

I'm currently trying to call Outlook COM interfaces based on JNA 4.1.0.

When trying to setBodyFormat of MailItem, I encountered the java.lang.IllegalArgumentException, with call stack listed below.

I searched the web without helpful info. Could you please give some advice? Thank you!

#Problem details#

I'm simply using setProperty("BodyFormat", (int) 1); to set the format to HTML.

The COMLateBindingObject::setProperty is:

    protected void setProperty(String propertyName, int value) {

        this.oleMethod(OleAuto.DISPATCH_PROPERTYPUT, null, this.getIDispatch(),

                propertyName, new VARIANT(value));

    }

Exception info and call stack:

java.lang.IllegalArgumentException: Can not set com.sun.jna.platform.win32.WinDef$LONG field com.sun.jna.platform.win32.Variant$VARIANT$_VARIANT$__VARIANT.lVal to java.lang.Integer

at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167)

at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171)

at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81)

at java.lang.reflect.Field.set(Field.java:758)

at com.sun.jna.Structure.setFieldValue(Structure.java:591)

at com.sun.jna.Structure.setFieldValue(Structure.java:585)

at com.sun.jna.Structure.writeField(Structure.java:749)

at com.sun.jna.Union.writeField(Union.java:129)

at com.sun.jna.platform.win32.Variant$VARIANT.setValue(Variant.java:240)

at com.sun.jna.platform.win32.Variant$VARIANT.setValue(Variant.java:231)

at com.sun.jna.platform.win32.Variant$VARIANT.<init>(Variant.java:178)

at com.sun.jna.platform.win32.COM.COMLateBindingObject.setProperty(COMLateBindingObject.java:546)

at com.siebel.applets.email.CSSOLMailItem.setBodyFormat(CSSOLMailItem.java:47)

I also tried to call setProperty("BodyFormat", (short) 1); still got similar issue. 

java.lang.IllegalArgumentException: Can not set com.sun.jna.platform.win32.WinDef$SHORT field com.sun.jna.platform.win32.Variant$VARIANT$_VARIANT$__VARIANT.iVal to java.lang.Short

at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167)

at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171)

at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81)

at java.lang.reflect.Field.set(Field.java:758)

at com.sun.jna.Structure.setFieldValue(Structure.java:591)

at com.sun.jna.Structure.setFieldValue(Structure.java:585)

at com.sun.jna.Structure.writeField(Structure.java:749)

at com.sun.jna.Union.writeField(Union.java:129)

at com.sun.jna.platform.win32.Variant$VARIANT.setValue(Variant.java:237)

at com.sun.jna.platform.win32.Variant$VARIANT.setValue(Variant.java:231)

at com.sun.jna.platform.win32.Variant$VARIANT.<init>(Variant.java:173)

at com.sun.jna.platform.win32.COM.COMLateBindingObject.setProperty(COMLateBindingObject.java:559)

Any advice would be appreciated!

Thanks,

Athena

[Athena]

Some additional info from Outlook TypeLib:

HRESULT BodyFormat([in] OlBodyFormat BodyFormat);

    enum {

        olFormatUnspecified = 0,

        olFormatPlain = 1,

        olFormatHTML = 2,

        olFormatRichText = 3

    } OlBodyFormat;

So in java codes calling JNA, per my understanding, calling setProperty(String propertyName, int value) method is correct.

[siebens...@mcmnet.de]

Hello Athena,

it seems, that it's not the problem to call setProperty() but to call the constructor from VARIANT?!?

Do you have tried to call simply "new VARIANT(1)" ?
Do you have some context for your problem? Is your program running in a multi-classloader-context? Do you have
a fully initialized Outlook-COM-Object already? Or do you have called CoInitialize() first?

If you can give me some more details, perhaps I can help you. :-)

Sincerly,
                      Siebenschläfer

[siebens...@mcmnet.de]

Ok... there seems to be a problem in VARIANT with numeric types... :-(

I had the same problem at another location.

Here is a workaround to set a numeric (integer) property:

long value = 1;
VARIANT v = new VARIANT();
v.setValue(new VARTYPE(com.sun.jna.platform.win32.Variant.VT_I4), new com.sun.jna.platform.win32.WinDef.LONG(value));
setProperty("BodyFormat", getIDispatch(), v);

Hope that helps.

Sincerly,
                             Siebenschläfer