Thread: Dialogbox from within a DLL

You have two problems. First, remove WS_CHILD from the dialog. WS_DISABLED probably isn't all that useful either.
Second, you're not declaring the DLL function correctly in the client. Two ways to fix this:

Code:

#include <windows.h>

extern "C" __declspec(dllimport) 
LRESULT DisplayMyMessage(HWND hwndOwner);

#pragma comment(lib, "Con2DLL.lib")

int main()
{ 
    DisplayMyMessage(0);
    return 0;
}//main

Or...

Code:

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

typedef LRESULT (*DisplayMyMessage_pfn)(HWND);

int main()
{ 
    HMODULE hmod = LoadLibraryA("Con2DLL.dll");
    if (!hmod)
    {
        cerr << "LoadLibrary failed, le = " << GetLastError() << endl;
        return 1;
    }//if

    DisplayMyMessage_pfn dm = 
        (DisplayMyMessage_pfn)GetProcAddress(hmod, "DisplayMyMessage");
    if (!dm)
    {
        FreeLibrary(hmod);
        cerr << "GerProcAddress failed, le = " << GetLastError() << endl;
        return 1;
    }//if

    dm(0);

    FreeLibrary(hmod);
    return 0;
}//main

gg