SetValue and Release are not functions

Question

In summary: I searched MSDN and thought to create my own SetValue but I can\'t find any sourcecode for it. It\'s not in a DLL, its like InitPropVariantFromStr

Answer 1

Solved, I had to use VTBL: https://github.com/Noitidart/_scratchpad/blob/master/IPropertyStore%20COM%20jsctypes.js

The order of the defintions in the Vtbl matter big time. So make sure its correct if you want to do something with Vtbls

var IPropertyStoreVtbl = new ctypes.StructType('IPropertyStoreVtbl');
var IPropertyStore = new ctypes.StructType('IPropertyStore', [{
    'lpVtbl': IPropertyStoreVtbl.ptr
}]);
this.IPropertyStorePtr = new ctypes.PointerType(IPropertyStore);

IPropertyStoreVtbl.define(
    [{ //start inherit from IUnknown
        'QueryInterface': ctypes.FunctionType(ctypes.stdcall_abi,
            this.HRESULT, [
                IPropertyStore.ptr,
                this.REFIID,    // riid
                this.VOIDPTR    // **ppvObject
            ]).ptr
    }, {
        'AddRef': ctypes.FunctionType(ctypes.stdcall_abi,
            this.ULONG, [
                IPropertyStore.ptr
            ]).ptr
    }, {
        'Release': ctypes.FunctionType(ctypes.stdcall_abi,
            this.ULONG, [
                IPropertyStore.ptr
            ]).ptr
    }, { //end inherit from IUnknown //start IPropertyStore
        'GetCount': ctypes.FunctionType(ctypes.stdcall_abi,
            this.HRESULT, [
                IPropertyStore.ptr,
                this.DWORD.ptr  // *cProps
            ]).ptr
    }, {
        'GetAt': ctypes.FunctionType(ctypes.stdcall_abi,
            this.HRESULT, [
                IPropertyStore.ptr,
                this.DWORD,             // iProp
                this.PROPERTYKEY.ptr    //*pkey
            ]).ptr
    }, {
        'GetValue': ctypes.FunctionType(ctypes.stdcall_abi,
            this.HRESULT, [
                IPropertyStore.ptr,
                this.REFPROPERTYKEY,    // key
                this.PROPVARIANT.ptr    // *pv
            ]).ptr
    }, {
        'SetValue': ctypes.FunctionType(ctypes.stdcall_abi,
            this.HRESULT, [
                IPropertyStore.ptr,
                this.REFPROPERTYKEY,    // key
                this.REFPROPVARIANT     // propvar
            ]).ptr
    }, {
        'Commit': ctypes.FunctionType(ctypes.stdcall_abi,
            this.HRESULT, [
                IPropertyStore.ptr
            ]).ptr
    }]
);

Then to get the IPropertyStore of a window:

var ppsPtr = new ostypes.IPropertyStorePtr();
var hr_SHGetPropertyStoreForWindow = _dec('SHGetPropertyStoreForWindow')(cHwnd, IID_IPropertyStore.address(), ppsPtr.address()); 
checkHRESULT(hr_SHGetPropertyStoreForWindow, 'SHGetPropertyStoreForWindow');
var pps = ppsPtr.contents.lpVtbl.contents;

now you can use IPropertyStore :: SetValue and IPropertyStore :: Release but make sure to pass the ppsPtr as first argument to them then the remaining arguments are what you would expect: var hr = pps.SetValue(ppsPtr, firstArgOf_SetValue, secondArgOf_SetValue)

---

EDIT:

adding copy paste runnable script from scratchpad. Copy and paste this: http://pastebin.mozilla.org/8429999

this will do the equivalent of this XPCOM:

 var win = Services.wm.getMostRecentWindow(null);
 Cc["@mozilla.org/windows-taskbar;1"].getService(Ci.nsIWinTaskbar).setGroupIdForWindow(win, 'Contoso.Scratch')

Yes its long but the good thing about it is, there is no XPCOM to set RelaunchCommand and RelaunchIconResource etc. Thats why js-ctypes is needed.