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-rw-r--r--sound/win32_s.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/sound/win32_s.c b/sound/win32_s.c
index b32c2e746..22c1b9468 100644
--- a/sound/win32_s.c
+++ b/sound/win32_s.c
@@ -36,7 +36,7 @@ static void FillHeaders(void)
}
}
-static void CALLBACK waveOutProc(HWAVEOUT hwo, UINT uMsg, DWORD dwInstance,
+static void CALLBACK waveOutProc(HWAVEOUT hwo, UINT uMsg, DWORD_PTR dwInstance,
DWORD dwParam1, DWORD dwParam2)
{
switch (uMsg) {
@@ -62,7 +62,7 @@ static const char *Win32SoundStart(const char* const* parm)
wfex.nAvgBytesPerSec = hz * 2 * 2;
wfex.nBlockAlign = 4;
wfex.wBitsPerSample = 16;
- if (waveOutOpen(&_waveout, WAVE_MAPPER, &wfex, (DWORD)&waveOutProc, 0, CALLBACK_FUNCTION) != MMSYSERR_NOERROR)
+ if (waveOutOpen(&_waveout, WAVE_MAPPER, &wfex, (DWORD_PTR)&waveOutProc, 0, CALLBACK_FUNCTION) != MMSYSERR_NOERROR)
return "waveOutOpen failed";
PrepareHeader(&_wave_hdr[0]);
PrepareHeader(&_wave_hdr[1]);