Make string elements of MCI_OPEN_PARMS const to match the SDK headers.

dlls/mciseq/mcimidi.c

@@ -738,7 +738,7 @@ static DWORD MIDI_mciOpen(UINT wDevID, DWORD dwFlags, LPMCI_OPEN_PARMSW lpParms)
     if (dwFlags & MCI_OPEN_ELEMENT) {
 	TRACE("MCI_OPEN_ELEMENT %s!\n", debugstr_w(lpParms->lpstrElementName));
 	if (lpParms->lpstrElementName && strlenW(lpParms->lpstrElementName) > 0) {
-	    wmm->hFile = mmioOpenW(lpParms->lpstrElementName, NULL,
+	    wmm->hFile = mmioOpenW((LPWSTR)lpParms->lpstrElementName, NULL,
 				   MMIO_ALLOCBUF | MMIO_READ | MMIO_DENYWRITE);
 	    if (wmm->hFile == 0) {
 		WARN("Can't find file %s!\n", debugstr_w(lpParms->lpstrElementName));

dlls/winmm/mci.c

@@ -456,15 +456,15 @@ static DWORD MCI_UnmapMsgAtoW(UINT msg, DWORD_PTR dwParam1, DWORD_PTR dwParam2,
             if (dwParam1 & MCI_OPEN_TYPE)
             {
                 if (!(dwParam1 & MCI_OPEN_TYPE_ID))
-                    HeapFree(GetProcessHeap(), 0, mci_openW->lpstrDeviceType);
+                    HeapFree(GetProcessHeap(), 0, (LPWSTR)mci_openW->lpstrDeviceType);
             }
             if (dwParam1 & MCI_OPEN_ELEMENT)
             {
                 if (!(dwParam1 & MCI_OPEN_ELEMENT_ID))
-                    HeapFree(GetProcessHeap(), 0, mci_openW->lpstrElementName);
+                    HeapFree(GetProcessHeap(), 0, (LPWSTR)mci_openW->lpstrElementName);
             }
             if (dwParam1 & MCI_OPEN_ALIAS)
-                HeapFree(GetProcessHeap(), 0, mci_openW->lpstrAlias);
+                HeapFree(GetProcessHeap(), 0, (LPWSTR)mci_openW->lpstrAlias);
             HeapFree(GetProcessHeap(), 0, ptr);
         }
         break;

dlls/winmm/message16.c

@@ -2808,11 +2808,11 @@ static  WINMM_MapType	MCI_UnMapMsg16To32W(WORD uDevType, WORD wMsg, DWORD dwFlag
 
 	    mop16->wDeviceID = mop32w->wDeviceID;
             if( ( dwFlags & ( MCI_OPEN_TYPE | MCI_OPEN_TYPE_ID)) == MCI_OPEN_TYPE)
-                HeapFree(GetProcessHeap(), 0, mop32w->lpstrDeviceType);
+                HeapFree(GetProcessHeap(), 0, (LPWSTR)mop32w->lpstrDeviceType);
             if( ( dwFlags & ( MCI_OPEN_ELEMENT | MCI_OPEN_ELEMENT_ID)) == MCI_OPEN_ELEMENT)
-                HeapFree(GetProcessHeap(), 0, mop32w->lpstrElementName);
+                HeapFree(GetProcessHeap(), 0, (LPWSTR)mop32w->lpstrElementName);
             if( ( dwFlags &  MCI_OPEN_ALIAS))
-                HeapFree(GetProcessHeap(), 0, mop32w->lpstrAlias);
+                HeapFree(GetProcessHeap(), 0, (LPWSTR)mop32w->lpstrAlias);
 	    if (!HeapFree(GetProcessHeap(), 0, (LPVOID)(lParam - sizeof(LPMCI_OPEN_PARMS16))))
 		FIXME("bad free line=%d\n", __LINE__);
 	}

include/mmsystem.h

@@ -1942,17 +1942,17 @@ typedef struct tagMCI_GENERIC_PARMS {
 typedef struct tagMCI_OPEN_PARMSA {
        DWORD_PTR       dwCallback;
 	MCIDEVICEID	wDeviceID;
-	LPSTR		lpstrDeviceType;
-	LPSTR		lpstrElementName;
-	LPSTR		lpstrAlias;
+	LPCSTR		lpstrDeviceType;
+	LPCSTR		lpstrElementName;
+	LPCSTR		lpstrAlias;
 } MCI_OPEN_PARMSA, *LPMCI_OPEN_PARMSA;
 
 typedef struct tagMCI_OPEN_PARMSW {
        DWORD_PTR       dwCallback;
 	MCIDEVICEID	wDeviceID;
-	LPWSTR		lpstrDeviceType;
-	LPWSTR		lpstrElementName;
-	LPWSTR		lpstrAlias;
+	LPCWSTR		lpstrDeviceType;
+	LPCWSTR		lpstrElementName;
+	LPCWSTR		lpstrAlias;
 } MCI_OPEN_PARMSW, *LPMCI_OPEN_PARMSW;
 
 DECL_WINELIB_TYPE_AW(MCI_OPEN_PARMS)