Lpwstr

[wey97]

I have a LPWSTR with a value and I want to convert it to char* or string.

Is there a simple function to do this?

[parksie]

LPWSTR is actually wchar_t* (or the equivalent of).

You can use this raw under 2000 (it's a Unicode string), but for 98 you need to convert it. Search the forum for WideCharToMultiByte and you should be sorted

[wey97]

Originally posted by parksie
You can use this raw under 2000

Ok, I am in 2000, so how do I do this?

[parksie]

What are you using? Is it a console app?

I think you can just output it to wcout in the usual manner. It's hazy trying to use both in one program, though - either convert everything to Unicode, or everything to the multibyte set (the normal char* stuff...yes I know it's called multibyte but for most characters 1 byte will suffice).

[wey97]

It is in console for now.

To be honest with you, I am in a bit of a mess. I am trying to enumerate the Protected Storage in W2K like here http://www.codeproject.com/w2k/pseenuma.asp

Here is the code I have so far.

#include <windows.h>
#include <iostream>
using namespace std;


// import type library.
#import <pstorec.dll> no_namespace

// function pointer
typedef HRESULT (WINAPI *PStoreCreateInstancePtr)(IPStore **, DWORD, DWORD, DWORD);


void main(){

	CoInitialize(NULL);
	
	HMODULE hPstoreDLL;
	
	hPstoreDLL = LoadLibrary("pstorec.dll");
	
	PStoreCreateInstancePtr PStoreCreateInstance;
	
	PStoreCreateInstance = 
		(PStoreCreateInstancePtr)GetProcAddress(hPstoreDLL, "PStoreCreateInstance");

	IPStorePtr spPStore; 

	HRESULT hRes;
	
	hRes = PStoreCreateInstance(&spPStore, 0, 0, 0);

	IEnumPStoreTypesPtr spEnumTypes;

	hRes = spPStore->EnumTypes(0, 0, &spEnumTypes);

	GUID typeGUID;

	unsigned long ul1;

	for(int i = 0; i < 5; i++) // Internet Explorer Type
		hRes = spEnumTypes->Next(1, &typeGUID, &ul1);


	IEnumPStoreTypesPtr spEnumSubTypes;

	GUID subtypeGUID;

	hRes = spPStore->EnumSubtypes(0, &typeGUID, 0, &spEnumSubTypes);

	hRes = spEnumSubTypes->Next(0, &subtypeGUID, &ul1); // Internet Explorer Subtype

	IEnumPStoreItemsPtr spEnumItems;

	hRes = spPStore->EnumItems(0, &typeGUID, &subtypeGUID, 0, &spEnumItems);

	LPWSTR lpwstr;
	
		hRes = spEnumItems->Next(0, &lpwstr, &ul1);
		wcout << lpwstr << endl;


	CoUninitialize();
}

... and you see what happens.

[wey97]

PS - Anybody that knows win2K Protected Storage, feel free to jump in.

[parksie]

hRes = spEnumItems->Next(0, &lpwstr, &ul1);

Shouldn't that just be "lpwstr" not "&lpwstr"?

[wey97]

Well, one would think it should be. The parameter is actually

LPWSTR* rgelt

go figure.