diff --git a/dlls/odbccp32/odbccp32.c b/dlls/odbccp32/odbccp32.c
index e765a46aaf0..218aabad1c2 100644
--- a/dlls/odbccp32/odbccp32.c
+++ b/dlls/odbccp32/odbccp32.c
@@ -106,14 +106,14 @@ BOOL WINAPI SQLConfigDriver(HWND hwndParent, WORD fRequest, LPCSTR lpszDriver,
     return FALSE;
 }
 
-BOOL WINAPI SQLCreateDataSourceW(HWND hwnd, LPWSTR lpszDS)
+BOOL WINAPI SQLCreateDataSourceW(HWND hwnd, LPCWSTR lpszDS)
 {
     FIXME("\n");
     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
     return FALSE;
 }
 
-BOOL WINAPI SQLCreateDataSource(HWND hwnd, LPSTR lpszDS)
+BOOL WINAPI SQLCreateDataSource(HWND hwnd, LPCSTR lpszDS)
 {
     FIXME("\n");
     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
@@ -160,7 +160,7 @@ BOOL WINAPI SQLGetInstalledDrivers(LPSTR lpszBuf, WORD cbBufMax,
 }
 
 int WINAPI SQLGetPrivateProfileStringW(LPCWSTR lpszSection, LPCWSTR lpszEntry,
-               LPCWSTR lpszDefault, LPCWSTR RetBuffer, INT cbRetBuffer,
+               LPCWSTR lpszDefault, LPCWSTR RetBuffer, int cbRetBuffer,
                LPCWSTR lpszFilename)
 {
     FIXME("\n");
@@ -169,7 +169,7 @@ int WINAPI SQLGetPrivateProfileStringW(LPCWSTR lpszSection, LPCWSTR lpszEntry,
 }
 
 int WINAPI SQLGetPrivateProfileString(LPCSTR lpszSection, LPCSTR lpszEntry,
-               LPCSTR lpszDefault, LPCSTR RetBuffer, INT cbRetBuffer,
+               LPCSTR lpszDefault, LPCSTR RetBuffer, int cbRetBuffer,
                LPCSTR lpszFilename)
 {
     FIXME("\n");
@@ -287,7 +287,7 @@ BOOL WINAPI SQLInstallODBC(HWND hwndParent, LPCSTR lpszInfFile,
     return FALSE;
 }
 
-RETCODE WINAPI SQLInstallerErrorW(WORD iError, DWORD *pfErrorCode,
+SQLRETURN WINAPI SQLInstallerErrorW(WORD iError, DWORD *pfErrorCode,
                LPWSTR lpszErrorMsg, WORD cbErrorMsgMax, WORD *pcbErrorMsg)
 {
     FIXME("\n");
@@ -295,7 +295,7 @@ RETCODE WINAPI SQLInstallerErrorW(WORD iError, DWORD *pfErrorCode,
     return FALSE;
 }
 
-RETCODE WINAPI SQLInstallerError(WORD iError, DWORD *pfErrorCode,
+SQLRETURN WINAPI SQLInstallerError(WORD iError, DWORD *pfErrorCode,
                LPSTR lpszErrorMsg, WORD cbErrorMsgMax, WORD *pcbErrorMsg)
 {
     FIXME("\n");
@@ -346,14 +346,14 @@ BOOL WINAPI SQLManageDataSources(HWND hwnd)
     return FALSE;
 }
 
-RETCODE WINAPI SQLPostInstallerErrorW(DWORD fErrorCode, LPWSTR szErrorMsg)
+SQLRETURN WINAPI SQLPostInstallerErrorW(DWORD fErrorCode, LPCWSTR szErrorMsg)
 {
     FIXME("\n");
     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
     return FALSE;
 }
 
-RETCODE WINAPI SQLPostInstallerError(DWORD fErrorCode, LPSTR szErrorMsg)
+SQLRETURN WINAPI SQLPostInstallerError(DWORD fErrorCode, LPCSTR szErrorMsg)
 {
     FIXME("\n");
     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
diff --git a/dlls/odbccp32/odbccp32.spec b/dlls/odbccp32/odbccp32.spec
index 36599a2924d..e01da6ae661 100644
--- a/dlls/odbccp32/odbccp32.spec
+++ b/dlls/odbccp32/odbccp32.spec
@@ -16,8 +16,8 @@
 @ stdcall SQLGetPrivateProfileStringW(wstr wstr wstr wstr long wstr)
 @ stdcall SQLGetTranslator(ptr str long ptr ptr long ptr ptr)
 @ stdcall SQLGetTranslatorW(ptr wstr long ptr ptr long ptr ptr)
-@ stdcall SQLInstallDriver(str str str long ptr long ptr)
-@ stdcall SQLInstallDriverEx(str str str long ptr)
+@ stdcall SQLInstallDriver(str str str long ptr)
+@ stdcall SQLInstallDriverEx(str str str long ptr long ptr)
 @ stdcall SQLInstallDriverExW(wstr wstr wstr long ptr long ptr)
 @ stdcall SQLInstallDriverManager(ptr long ptr)
 @ stdcall SQLInstallDriverManagerW(ptr long ptr)
diff --git a/include/odbcinst.h b/include/odbcinst.h
index 142c8c53da0..f29617202db 100644
--- a/include/odbcinst.h
+++ b/include/odbcinst.h
@@ -30,28 +30,28 @@ BOOL WINAPI SQLConfigDataSource(HWND,WORD,LPCSTR,LPCSTR);
 BOOL WINAPI SQLConfigDataSourceW(HWND,WORD,LPCWSTR,LPCWSTR);
 BOOL WINAPI SQLConfigDriver(HWND,WORD,LPCSTR,LPCSTR,LPSTR,WORD,WORD*);
 BOOL WINAPI SQLConfigDriverW(HWND,WORD,LPCWSTR,LPCWSTR,LPWSTR,WORD,WORD*);
-BOOL WINAPI SQLCreateDataSource(HWND,LPSTR);
-BOOL WINAPI SQLCreateDataSourceW(HWND,LPWSTR);
+BOOL WINAPI SQLCreateDataSource(HWND,LPCSTR);
+BOOL WINAPI SQLCreateDataSourceW(HWND,LPCWSTR);
 BOOL WINAPI SQLGetConfigMode(UWORD*);
 BOOL WINAPI SQLGetInstalledDrivers(LPSTR,WORD,WORD*);
 BOOL WINAPI SQLGetInstalledDriversW(LPWSTR,WORD,WORD*);
-int WINAPI SQLGetPrivateProfileString(LPCSTR,LPCSTR,LPCSTR,LPCSTR,INT,LPCSTR);
-int WINAPI SQLGetPrivateProfileStringW(LPCWSTR,LPCWSTR,LPCWSTR,LPCWSTR,INT,LPCWSTR);
+int WINAPI SQLGetPrivateProfileString(LPCSTR,LPCSTR,LPCSTR,LPCSTR,int,LPCSTR);
+int WINAPI SQLGetPrivateProfileStringW(LPCWSTR,LPCWSTR,LPCWSTR,LPCWSTR,int,LPCWSTR);
 BOOL WINAPI SQLGetTranslator(HWND,LPSTR,WORD,WORD*,LPSTR,WORD,WORD*,DWORD*);
 BOOL WINAPI SQLGetTranslatorW(HWND,LPWSTR,WORD,WORD*,LPWSTR,WORD,WORD*,DWORD*);
 BOOL WINAPI SQLInstallDriverEx(LPCSTR,LPCSTR,LPSTR,WORD,WORD*,WORD,LPDWORD);
 BOOL WINAPI SQLInstallDriverExW(LPCWSTR,LPCWSTR,LPWSTR,WORD,WORD*,WORD,LPDWORD);
 BOOL WINAPI SQLInstallDriverManager(LPSTR,WORD,WORD*);
 BOOL WINAPI SQLInstallDriverManagerW(LPWSTR,WORD,WORD*);
-RETCODE WINAPI SQLInstallerError(WORD,DWORD*,LPSTR,WORD,WORD*);
-RETCODE WINAPI SQLInstallerErrorW(WORD,DWORD*,LPWSTR,WORD,WORD*);
+SQLRETURN WINAPI SQLInstallerError(WORD,DWORD*,LPSTR,WORD,WORD*);
+SQLRETURN WINAPI SQLInstallerErrorW(WORD,DWORD*,LPWSTR,WORD,WORD*);
 BOOL WINAPI SQLInstallTranslatorEx(LPCSTR,LPCSTR,LPSTR,WORD,WORD*,WORD,LPDWORD);
 BOOL WINAPI SQLInstallTranslatorExW(LPCWSTR,LPCWSTR,LPWSTR,WORD,WORD*,WORD,LPDWORD);
 BOOL WINAPI SQLInstallTranslator(LPCSTR,LPCSTR,LPCSTR,LPSTR,WORD,WORD*,WORD,LPDWORD);
 BOOL WINAPI SQLInstallTranslatorW(LPCWSTR,LPCWSTR,LPCWSTR,LPWSTR,WORD,WORD*,WORD,LPDWORD);
 BOOL WINAPI SQLManageDataSources(HWND hwnd);
-RETCODE WINAPI SQLPostInstallerError(DWORD,LPSTR);
-RETCODE WINAPI SQLPostInstallerErrorW(DWORD,LPWSTR);
+SQLRETURN WINAPI SQLPostInstallerError(DWORD,LPCSTR);
+SQLRETURN WINAPI SQLPostInstallerErrorW(DWORD,LPCWSTR);
 BOOL WINAPI SQLReadFileDSN(LPCSTR,LPCSTR,LPCSTR,LPSTR,WORD,WORD*);
 BOOL WINAPI SQLReadFileDSNW(LPCWSTR,LPCWSTR,LPCWSTR,LPWSTR,WORD,WORD*);
 BOOL WINAPI SQLRemoveDefaultDataSource(void);
diff --git a/tools/winapi/win32.api b/tools/winapi/win32.api
index 83ef83d52c0..67f05e7d839 100644
--- a/tools/winapi/win32.api
+++ b/tools/winapi/win32.api
@@ -2708,6 +2708,37 @@ SQLUINTEGER *
 SQLUSMALLINT *
 WCHAR *
 
+%%odbccp32.dll
+
+%long
+
+BOOL
+DWORD
+HWND
+LONG
+SQLRETURN
+UWORD
+WORD
+int
+
+%str
+
+LPCSTR
+LPSTR
+
+%wstr
+
+LPCWSTR
+LPWSTR
+
+%ptr
+
+DWORD *
+LONG *
+LPDWORD
+UWORD *
+WORD *
+
 %%ole32.dll
 
 %long