Unable to add/ modify stamp programmatically.

hi,

I am using Acrobat 7.0.

Using C# and Interop.Acrobat.dll I am accessing JSObject of the pdf and trying to add a stamp to the pdf which is not working fine. I, however, successfully managed with inserting watermarks.

It always adds the default "draft" stamp but I cannot modify it using javascript and "AP" property of the annotation object.

Following is my code snippet,

public static int Stamp(string fileToMark, string outputFile, string author, string contents, string subject, Color color)
{
................
............

.....

for (int i = 0; i < oNumPages; i++)
{
annotObj = T.InvokeMember(
"AddAnnot",
BindingFlags.InvokeMethod |
BindingFlags.Public |
BindingFlags.Instance,
null, jsObj, null);
Type annotType = annotObj.GetType();
propsObj = annotType.InvokeMember(
"getProps",
BindingFlags.InvokeMethod |
BindingFlags.Public |
BindingFlags.Instance,
null, annotObj, null);
Type propsType = propsObj.GetType();

//start setting properties.
//type property
object[] typeParam = { "Stamp" };
propsType.InvokeMember(
"Type",
BindingFlags.SetProperty |
BindingFlags.Public |
BindingFlags.Instance,
null, propsObj, typeParam);

//page number property
object[] pageParam = { i };
propsType.InvokeMember(
"page",
BindingFlags.SetProperty |
BindingFlags.Public |
BindingFlags.Instance,
null, propsObj, pageParam);

.........................

..............

//annotation name property
object[] nameParam = { "PWAnno" };
propsType.InvokeMember(
"name",
BindingFlags.SetProperty |
BindingFlags.Public |
BindingFlags.Instance,
null, propsObj, nameParam);

object[] setPropsParam = { propsObj };
annotType.InvokeMember(
"setProps",
BindingFlags.InvokeMethod |
BindingFlags.Public |
BindingFlags.Instance,
null, annotObj, setPropsParam);
/////////////////////////////////////////////

//object[] getAnnotParam = { i, "PWAnno" };
//annotObj = T.InvokeMember(
// "getAnnot",
// BindingFlags.InvokeMethod |
// BindingFlags.Public |
// BindingFlags.Instance,
// null, jsObj, getAnnotParam);

//annotType = annotObj.GetType();

//now that stamp is already created and added to document, getProps needs to be revoked so that this time we can get reference of "AP" property
propsObj = annotType.InvokeMember(
"getProps",
BindingFlags.InvokeMethod |
BindingFlags.Public |
BindingFlags.Instance,
null, annotObj, null);

propsType = propsObj.GetType();

//annotation appearance property
object[] APParam = { "confidential" };
propsType.InvokeMember(
"AP",
BindingFlags.SetProperty |
BindingFlags.Public |
BindingFlags.Instance,
null, propsObj, APParam);

object[] setPropsParam2 = { propsObj };
annotType.InvokeMember(
"setProps",
BindingFlags.InvokeMethod |
BindingFlags.Public |
BindingFlags.Instance,
null, annotObj, setPropsParam2);

}
........
........

return 0;
}

As you can see I tried to modify the "AP" property to "Confidential" but it always puts "draft" stamp in it which is the default.

Kindly help me.

Regards,
Nikhil.