¿Fast Report en FW64?

[JoseAlvarez]

Saludos a todos.

En vista de una futura migración a FW64Bits, ¿Funciona Fast Report en 64 bits?

[karinha]

Buén dia estimado. Pregunte aqui:

https://www.ozs.es/wp/fastreport/

Regards, saludos.

[carlos vargas]

No.

[CARLOS ATUNCAR]

no hay que crear un 32bits y pasar los datos para generar el reporte

[paquitohm]

Saludos a todos.

En vista de una futura migración a FW64Bits, ¿Funciona Fast Report en 64 bits?

viewtopic.php?f=17&t=34973&start=45#p270980

[Horizon]

Saludos a todos.

En vista de una futura migración a FW64Bits, ¿Funciona Fast Report en 64 bits?

I have the same problem. I have found this article.
https://blog.mattmags.com/2007/06/30/accessing-32-bit-dlls-from-64-bit-code/

[Antonio Linares]

Dear Hakan,

Your pointed article is very interesting but it does not provide any source code examples.

Using Claude https://claude.ai/new we can get code examples:

can you write an example of using IPC to use a 32 bits DLL from a 64 bits EXE on Windows ? Use C language

Certainly, I can provide an example of using Inter-Process Communication (IPC) to use a 32-bit DLL from a 64-bit EXE on Windows using C. This is a common scenario when dealing with legacy 32-bit DLLs that need to be used in modern 64-bit applications. We'll use named pipes for IPC in this example.

This example demonstrates how to use IPC with named pipes to communicate between a 64-bit EXE and a 32-bit EXE, which in turn loads and uses a 32-bit DLL. Here's a breakdown of the components:
64-bit EXE (main.c):
Creates a named pipe
Launches the 32-bit helper process
Reads the result from the pipe
32-bit EXE (helper32.c):
Loads the 32-bit DLL
Calls the function from the DLL
Sends the result back through the pipe
32-bit DLL (mylib32.c):
Contains a simple function that doubles its input
To use this example:
1. Compile the 32-bit DLL (mylib32.c) as a 32-bit DLL.
2. Compile the helper32.c as a 32-bit executable.
3. Compile the main.c as a 64-bit executable.
Make sure all three files are in the same directory when running the 64-bit EXE.
This approach allows you to indirectly use a 32-bit DLL from a 64-bit process by using a 32-bit helper process as an intermediary. The named pipe provides a simple way to pass data between the two processes.

Code: Select all  Expand view

// 64-bit EXE (main.c)
#include <windows.h>
#include <stdio.h>

#define PIPE_NAME "\\\\.\\pipe\\MyPipe"
#define BUFFER_SIZE 1024

int main() {
    HANDLE hPipe;
    char buffer[BUFFER_SIZE];
    DWORD bytesRead;
   
    // Create the named pipe
    hPipe = CreateNamedPipe(
        PIPE_NAME,
        PIPE_ACCESS_DUPLEX,
        PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE | PIPE_WAIT,
        1,
        BUFFER_SIZE,
        BUFFER_SIZE,
        0,
        NULL);
   
    if (hPipe == INVALID_HANDLE_VALUE) {
        printf("CreateNamedPipe failed, error %d\n", GetLastError());
        return 1;
    }
   
    // Start the 32-bit process
    STARTUPINFO si = { sizeof(STARTUPINFO) };
    PROCESS_INFORMATION pi;
    if (!CreateProcess("Helper32.exe", NULL, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi)) {
        printf("CreateProcess failed, error %d\n", GetLastError());
        CloseHandle(hPipe);
        return 1;
    }
   
    // Connect to the client
    if (!ConnectNamedPipe(hPipe, NULL)) {
        printf("ConnectNamedPipe failed, error %d\n", GetLastError());
        CloseHandle(hPipe);
        return 1;
    }
   
    // Read the result from the 32-bit process
    if (ReadFile(hPipe, buffer, BUFFER_SIZE, &bytesRead, NULL)) {
        buffer[bytesRead] = '\0';
        printf("Received from 32-bit process: %s\n", buffer);
    } else {
        printf("ReadFile failed, error %d\n", GetLastError());
    }
   
    // Clean up
    CloseHandle(hPipe);
    CloseHandle(pi.hProcess);
    CloseHandle(pi.hThread);
   
    return 0;
}

// 32-bit EXE (helper32.c)
#include <windows.h>
#include <stdio.h>

#define PIPE_NAME "\\\\.\\pipe\\MyPipe"
#define BUFFER_SIZE 1024

// Function prototype for the DLL function
typedef int (*MYLIBFUNC)(int);

int main() {
    HANDLE hPipe;
    HMODULE hDll;
    MYLIBFUNC MyLibFunc;
    char buffer[BUFFER_SIZE];
    DWORD bytesWritten;
   
    // Load the 32-bit DLL
    hDll = LoadLibrary("MyLib32.dll");
    if (hDll == NULL) {
        printf("LoadLibrary failed, error %d\n", GetLastError());
        return 1;
    }
   
    // Get the function address
    MyLibFunc = (MYLIBFUNC)GetProcAddress(hDll, "MyLibFunc");
    if (MyLibFunc == NULL) {
        printf("GetProcAddress failed, error %d\n", GetLastError());
        FreeLibrary(hDll);
        return 1;
    }
   
    // Call the function
    int result = MyLibFunc(42);
   
    // Connect to the named pipe
    hPipe = CreateFile(
        PIPE_NAME,
        GENERIC_WRITE,
        0,
        NULL,
        OPEN_EXISTING,
        0,
        NULL);
   
    if (hPipe == INVALID_HANDLE_VALUE) {
        printf("CreateFile failed, error %d\n", GetLastError());
        FreeLibrary(hDll);
        return 1;
    }
   
    // Send the result back to the 64-bit process
    sprintf(buffer, "Result from 32-bit DLL: %d", result);
    if (!WriteFile(hPipe, buffer, strlen(buffer), &bytesWritten, NULL)) {
        printf("WriteFile failed, error %d\n", GetLastError());
    }
   
    // Clean up
    CloseHandle(hPipe);
    FreeLibrary(hDll);
   
    return 0;
}

// 32-bit DLL (mylib32.c)
#include <windows.h>

__declspec(dllexport) int MyLibFunc(int x) {
    return x * 2;
}

Lately we are using Claude more and more than chatgpt and others. Claude is improving so much and it is outstanding in coding, knowing Harbour, xHarbour and FWH

[carlos vargas]

Interesante, la respuesta y claude...

[Carles]

Hola,

Te creas un servicio con 32 bits y te conectas desde tu App 64 bits via NETIO

C.