Jump to content
  • Advertisement
Sign in to follow this  
cutovoi

Multiple definition problems

This topic is 4735 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Hi fellows. I'm using directX with Dev-C++ 4.9.9.2. I want to play mp3 files but I have these problems:
  multiple definition of `IID_IMediaEvent' 
  first defined here 
  multiple definition of `IID_IMediaControl' 
  first defined here 
  multiple definition of `CLSID_FilterGraph' 
  first defined here 
  multiple definition of `CLSID_FilgraphManager' 
  first defined here 

The definitions of the IID_IMediaEvent and IID_IMediaControl are in the control.h of DirectX. The CLSID_FilterGraph and CLSID_FilterGraphManager are in the uuids.h If I comment the lines that cause this problem I obtain these problems:
59 C:\Documents and Settings\Alex\Desktop\DirectSound\DirectMain.cpp `IID_IMediaControl' undeclared (first use this function) 
60 C:\Documents and Settings\Alex\Desktop\DirectSound\DirectMain.cpp `IID_IMediaEvent' undeclared (first use this function) 
50 C:\Documents and Settings\Alex\Desktop\DirectSound\DirectMain.cpp `CLSID_FilterGraph' undeclared (first use this function) 

What I want to know is: Is there another place when this definitions are defined beyond these headers? I'm searching in another DirectX headers and I not found anything. Can anyone helps? Below the beginning of my code. Thanks a lot for the support:
#define INITGUID
#include <dmusici.h>
#include <dsound.h>
#include <dshow.h>
#include <iostream>

IGraphBuilder*             g_pMediaGraph    = NULL;
IMediaControl*             g_pMediaControl  = NULL;
IMediaEvent*               g_pMediaEvent    = NULL;

LRESULT CALLBACK WindowProcedure(HWND, UINT, WPARAM, LPARAM);

int WINAPI WinMain(HINSTANCE h1, HINSTANCE h2, LPSTR lp, int iShow)
{
   HWND       hwnd;
   HDC        hdc;
   MSG        msg;
   bool bQuit = false;
   WNDCLASSEX wnd;
   wnd.cbSize        = sizeof(WNDCLASSEX);
   wnd.style         = CS_OWNDC;
   wnd.cbClsExtra    = 0;
   wnd.cbWndExtra    = 0;
   wnd.hInstance     = h1;
   wnd.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
   wnd.hIconSm       = LoadIcon(NULL, IDI_APPLICATION);
   wnd.hCursor       = LoadCursor(NULL, IDC_ARROW);
   wnd.lpszMenuName  = NULL;
   wnd.lpszClassName = "hwnd";
   wnd.lpfnWndProc   = WindowProcedure;
   wnd.hbrBackground = CreateSolidBrush(RGB(128,128,128));
   if(!RegisterClassEx(&wnd))
   {
      MessageBox(0,"não registrou","",0);
   }
   hwnd = CreateWindowEx(0, "hwnd", "lalala", WS_POPUP, 0, 0, GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN), HWND_DESKTOP, NULL, h1, NULL);
   ShowWindow(hwnd, 1);
   CoInitialize(NULL);
   HRESULT hr = CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC, IID_IGraphBuilder, (void**)&g_pMediaGraph);
   //if(hr != S_OK)
   //{
   //   MessageBox(0,"","caralho",MB_OKCANCEL);
   //}
   WCHAR wstrFileName[MAX_PATH+1] = L"C:/Documents and Settings/Alex/My Documents/2_Shaaman-Shaman-Angra-Reason-More.mp3";
   g_pMediaGraph->QueryInterface(IID_IMediaControl, (void**)&g_pMediaControl); 
   g_pMediaGraph->QueryInterface(IID_IMediaEvent, (void**)&g_pMediaEvent);
   g_pMediaGraph->RenderFile(wstrFileName, NULL);
   while(!bQuit)
   {
      if(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
      {
         if(msg.message == WM_QUIT)
         {
            bQuit = true;
         }
         else
         {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
         }
      }
   }
}

LRESULT CALLBACK WindowProcedure(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
   switch(msg)
   {
      case WM_KEYDOWN:
      {
         switch(wParam)
         {
            case VK_ESCAPE:
            {
               g_pMediaControl->Release();
               g_pMediaGraph->Release();
               CoUninitialize();
               PostQuitMessage(0);
               break;
            }
         }
         break;
      }
      case WM_CHAR:
      {
         switch(wParam)
         {
            case 'x':
            {
               g_pMediaControl->Stop();
               break;
            }
            case 'z':
            {
               g_pMediaControl->Run();
            }
         }
         break;
      }
      default:
      return DefWindowProc(hwnd, msg, wParam, lParam);
   }
}

Share this post


Link to post
Share on other sites
Advertisement
If you use INITGUID to define the GUIDs for a DirectX program you should only #define it in one source file. Alternately you can leave off the INITGUID define and just link against the dxguid.lib file.

Share this post


Link to post
Share on other sites
Sign in to follow this  

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

GameDev.net is your game development community. Create an account for your GameDev Portfolio and participate in the largest developer community in the games industry.

Sign me up!