|
|
COM Interop Problems / Bugs
#464158
01/25/17 18:15
01/25/17 18:15
|
Joined: Aug 2016
Posts: 95
Wien
trenki2
OP
Junior Member
|
OP
Junior Member
Joined: Aug 2016
Posts: 95
Wien
|
I wanted to try out COM interop and unfortunately ran into some problems/bugs when including the needed headers. This is with my Zorro S 1.50.6.
#include <litec.h>
#include <com.h>
function run()
{
}
This gives:
Error in 'line 4:
'function' undeclared identifier
< function run()
>.
Since when uses any headers one has to manually include default.c, so I did that too:
#include <default.c>
#include <litec.h>
#include <com.h>
function run()
{
}
This unfortunately gives:
Error in 'windows.h' line 6610:
syntax error
< VOID WINAPI FillMemory(long Destination,DWORD Length,char Fill);
>.
I tried changing function run() to int run(). Then I also got a strange error message:
#include <litec.h>
#include <com.h>
int run()
{
}
Gives:
Test8 compiling.......
Error 061: Compiled with different version!
How to fix this?
Last edited by trenki2; 01/25/17 18:38.
|
|
|
Re: COM Interop Problems / Bugs
[Re: trenki2]
#464161
01/25/17 19:41
01/25/17 19:41
|
Joined: Aug 2016
Posts: 95
Wien
trenki2
OP
Junior Member
|
OP
Junior Member
Joined: Aug 2016
Posts: 95
Wien
|
I was able to make things work by changing something in windows.h. I changed the parameter name in the FillMemory from "Fill" to "fill" and it worked:
VOID WINAPI FillMemory(long Destination,DWORD Length,char fill);
With the above line this compiles now:
#include <default.c>
#include <litec.h>
#include <com.h>
function run()
{
}
|
|
|
Re: COM Interop Problems / Bugs
[Re: trenki2]
#464162
01/25/17 20:14
01/25/17 20:14
|
Joined: Aug 2016
Posts: 95
Wien
trenki2
OP
Junior Member
|
OP
Junior Member
Joined: Aug 2016
Posts: 95
Wien
|
I still have problems making the COM Interop work. I have a C# COM DLL which is registered in the system. I can do CoInitialize and also CoCreateInstance seems to work but afterwards the functions that I call seem to not work or return the wrong results or even crash. The complete project is here: http://www.filedropper.com/zorrotoolboxIts quite small. One just has to compile it in Visual Studio and place the Zorro files in the include and strategy folder respectively. It would be nice to get a fully working minimal example together so we could put it in the Zorro documentation to help others. The documentations also describes two possible ways to call the functions. Either via C++ style, or via C-style. When i try the C-style I unfortunately get a compiler error:
#include <default.c>
#include <litec.h>
#include <com.h>
#include <ZorroToolbox.h>
int WINAPI main()
{
HRESULT hr = CoInitialize(NULL);
if (hr != S_OK)
{
printf("CoInitialize Failed: %xnn", hr);
quit();
}
else
{
printf("CoInitialize succeededn");
}
IDoubleList *list = DoubleList_New();
if (!list)
printf("Failed to allocate objectn");
// Call via C-syle call -> Compiler error
// @temp_00582(): wrong number of parameters
// < hr = list->lpVtbl->ShowMessageBox(list);
hr = list->lpVtbl->ShowMessageBox(list);
list->Release();
CoUninitialize();
}
The code looks like this:
#include <default.c>
#include <litec.h>
#include <com.h>
#include <ZorroToolbox.h>
int WINAPI main()
{
HRESULT hr = CoInitialize(NULL);
if (hr != S_OK)
{
printf("CoInitialize Failed: %xnn", hr);
quit();
}
else
{
printf("CoInitialize succeededn");
}
IDoubleList *list = DoubleList_New();
if (!list)
printf("Failed to allocate objectn");
hr = list->ShowMessageBox();
if (hr != S_OK)
printf("ShowMessageBox failedn");
hr = list->Add(1.0);
if (hr != S_OK)
printf("Add failedn");
list->Add(5.0);
list->Add(3.0);
list->Add(2.0);
list->Sort();
long count;
list->Count(&count);
printf("Count: %in", count);
double value;
list->GetItem(0, &value);
printf("Item: %fn", value);
long i;
for (i = 0; i < count; ++i)
{
double value;
list->GetItem(i, &value);
printf("%fn", value);
}
list->Release();
CoUninitialize();
}
and this is the ZorroToolbox.h file:
typedef struct _IDoubleListVtbl
{
HRESULT __stdcall QueryInterface(void* This, IID *riid, void** ppvObject);
DWORD __stdcall AddRef(void* This);
DWORD __stdcall Release(void* This);
HRESULT __stdcall Add(/*[in]*/ void *This, /*[in]*/ double value);
HRESULT __stdcall Insert(/*[in]*/ void *This, /*[in]*/ long index, /*[in]*/ double value);
HRESULT __stdcall Remove(/*[in]*/ void *This, /*[in]*/ double value);
HRESULT __stdcall RemoveAt(/*[in]*/ void *This, /*[in]*/ long index);
HRESULT __stdcall RemoveRange(/*[in]*/ void *This, /*[in]*/ long index, /*[in]*/ long count);
HRESULT __stdcall Reverse(/*[in]*/ void *This);
HRESULT __stdcall ReverseRange(/*[in]*/ void *This, /*[in]*/ long index, /*[in]*/ long count);
HRESULT __stdcall SetItem(/*[in]*/ void *This, /*[in]*/ long index, /*[in]*/ double value);
HRESULT __stdcall GetItem(/*[in]*/ void *This, /*[in]*/ long index, /*[out,retval]*/ double * pRetVal);
HRESULT __stdcall Clear(/*[in]*/ void *This);
HRESULT __stdcall Count(/*[in]*/ void *This, /*[out,retval]*/ long * pRetVal);
HRESULT __stdcall Sort(/*[in]*/ void *This);
HRESULT __stdcall ShowMessageBox(/*[in]*/ void *This);
} IDoubleListVtbl;
typedef interface IDoubleList { IDoubleListVtbl *lpVtbl; } IDoubleList;
IDoubleList* DoubleList_New()
{
IDoubleList *pList = NULL;
GUID clsid;
IID iid;
IIDFromStr("{AC9831A9-2433-409E-967F-4B74127F3B12}", &clsid);
IIDFromStr("{EF4A8708-0FBF-4959-B8B9-FD1F1846B77A}", &iid);
HRESULT hr = CoCreateInstance(&clsid, NULL, CLSCTX_ALL, &iid, &pList);
return pList;
}
And this the C# Code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace ZorroToolbox
{
[ComVisible(true), Guid("EF4A8708-0FBF-4959-B8B9-FD1F1846B77A")]
public interface IDoubleList
{
void Add(double value);
void Insert(int index, double value);
void Remove(double value);
void RemoveAt(int index);
void RemoveRange(int index, int count);
void Reverse();
void ReverseRange(int index, int count);
void SetItem(int index, double value);
double GetItem(int index);
void Clear();
int Count();
void Sort();
void ShowMessageBox();
}
[ClassInterface(ClassInterfaceType.None)]
[ComVisible(true), Guid("AC9831A9-2433-409E-967F-4B74127F3B12")]
public class DoubleList : IDoubleList
{
private List<double> data = new List<double>();
public void Add(double value)
{
data.Add(value);
}
public void Clear()
{
data.Clear();
}
public int Count()
{
return data.Count;
}
public double GetItem(int index)
{
return data[index];
}
public void Insert(int index, double value)
{
data.Insert(index, value);
}
public void Remove(double value)
{
data.Remove(value);
}
public void RemoveAt(int index)
{
data.RemoveAt(index);
}
public void RemoveRange(int index, int count)
{
data.RemoveRange(index, count);
}
public void Reverse()
{
data.Reverse();
}
public void ReverseRange(int index, int count)
{
data.Reverse(index, count);
}
public void SetItem(int index, double value)
{
data[index] = value;
}
public void Sort()
{
data.Sort();
}
public void ShowMessageBox()
{
MessageBox.Show("MessageBox Text");
}
}
}
Zorro sais the script crashes. Even the ShowMessageBox line does not work. No message box is shown.
Last edited by trenki2; 01/25/17 21:21.
|
|
|
|
