diff --git a/dlls/winex11.drv/bitblt.c b/dlls/winex11.drv/bitblt.c
index ad861bb65fa..771a52bb8b3 100644
--- a/dlls/winex11.drv/bitblt.c
+++ b/dlls/winex11.drv/bitblt.c
@@ -681,8 +681,8 @@ static void BITBLT_StretchImage( XImage *srcImage, XImage *dstImage,
     register INT x, y;
     BOOL hstretch, vstretch, hswap, vswap;
 
-    hswap = ((int)widthSrc * widthDst) < 0;
-    vswap = ((int)heightSrc * heightDst) < 0;
+    hswap = widthSrc * widthDst < 0;
+    vswap = heightSrc * heightDst < 0;
     widthSrc  = abs(widthSrc);
     heightSrc = abs(heightSrc);
     widthDst  = abs(widthDst);
@@ -708,7 +708,7 @@ static void BITBLT_StretchImage( XImage *srcImage, XImage *dstImage,
 
     if (hstretch)
     {
-        xinc = ((int)widthSrc << 16) / widthDst;
+        xinc = (widthSrc << 16) / widthDst;
         xoff = ((widthSrc << 16) - (xinc * widthDst)) / 2;
     }
     else
@@ -720,7 +720,7 @@ static void BITBLT_StretchImage( XImage *srcImage, XImage *dstImage,
     wine_tsx11_lock();
     if (vstretch)
     {
-        yinc = ((int)heightSrc << 16) / heightDst;
+        yinc = (heightSrc << 16) / heightDst;
         ydst = visRectDst->top;
         if (vswap)
         {
@@ -778,7 +778,7 @@ static void BITBLT_StretchImage( XImage *srcImage, XImage *dstImage,
     }
     else  /* Shrinking */
     {
-        yinc = ((int)heightDst << 16) / heightSrc;
+        yinc = (heightDst << 16) / heightSrc;
         ysrc = visRectSrc->top;
         ydst = ((heightDst << 16) - (yinc * heightSrc)) / 2;
         if (vswap)
diff --git a/dlls/winex11.drv/clipboard.c b/dlls/winex11.drv/clipboard.c
index 453746f3a25..5e8599816af 100644
--- a/dlls/winex11.drv/clipboard.c
+++ b/dlls/winex11.drv/clipboard.c
@@ -1648,7 +1648,7 @@ HANDLE X11DRV_CLIPBOARD_ExportXAPIXMAP(Window requestor, Atom aTarget, Atom rpro
     memcpy(lpData, &lpdata->drvData, *lpBytes);
     GlobalUnlock(hData);
 
-    return (HANDLE) hData;
+    return hData;
 }
 
 
@@ -1666,8 +1666,7 @@ HANDLE X11DRV_CLIPBOARD_ExportMetaFilePict(Window requestor, Atom aTarget, Atom
         return 0;
     }
 
-    return X11DRV_CLIPBOARD_SerializeMetafile(CF_METAFILEPICT, (HANDLE)lpdata->hData32, 
-        lpBytes, TRUE);
+    return X11DRV_CLIPBOARD_SerializeMetafile(CF_METAFILEPICT, lpdata->hData32, lpBytes, TRUE);
 }
 
 
@@ -1685,8 +1684,7 @@ HANDLE X11DRV_CLIPBOARD_ExportEnhMetaFile(Window requestor, Atom aTarget, Atom r
         return 0;
     }
 
-    return X11DRV_CLIPBOARD_SerializeMetafile(CF_ENHMETAFILE, (HANDLE)lpdata->hData32, 
-        lpBytes, TRUE);
+    return X11DRV_CLIPBOARD_SerializeMetafile(CF_ENHMETAFILE, lpdata->hData32, lpBytes, TRUE);
 }
 
 
@@ -2136,7 +2134,7 @@ static HANDLE X11DRV_CLIPBOARD_SerializeMetafile(INT wformat, HANDLE hdata, LPDW
                 unsigned int wiresize, size;
                 LPMETAFILEPICT lpmfp = (LPMETAFILEPICT) GlobalLock(h);
 
-                memcpy(lpmfp, (LPVOID)hdata, sizeof(METAFILEPICT));
+                memcpy(lpmfp, hdata, sizeof(METAFILEPICT));
                 wiresize = *lpcbytes - sizeof(METAFILEPICT);
                 lpmfp->hMF = SetMetaFileBitsEx(wiresize,
                     ((const BYTE *)hdata) + sizeof(METAFILEPICT));
@@ -2146,7 +2144,7 @@ static HANDLE X11DRV_CLIPBOARD_SerializeMetafile(INT wformat, HANDLE hdata, LPDW
         }
         else if (wformat == CF_ENHMETAFILE)
         {
-            h = SetEnhMetaFileBits(*lpcbytes, (LPVOID)hdata);
+            h = SetEnhMetaFileBits(*lpcbytes, hdata);
         }
     }
 
@@ -2990,7 +2988,7 @@ static void X11DRV_HandleSelectionRequest( HWND hWnd, XSelectionRequestEvent *ev
 
                     wine_tsx11_lock();
                     XChangeProperty(display, request, rprop, event->target,
-                                    8, PropModeReplace, (unsigned char *)lpClipData, cBytes);
+                                    8, PropModeReplace, lpClipData, cBytes);
                     wine_tsx11_unlock();
 
                     GlobalUnlock(hClipData);
diff --git a/dlls/winex11.drv/dib.c b/dlls/winex11.drv/dib.c
index a95783e5128..2f0bbc94feb 100644
--- a/dlls/winex11.drv/dib.c
+++ b/dlls/winex11.drv/dib.c
@@ -2643,7 +2643,7 @@ static void X11DRV_DIB_SetImageBits_24( int lines, const BYTE *srcbits,
             /* Windows only supports one 24bpp DIB format: RGB888 */
             srcbits+=left*3;
             for (h = lines - 1; h >= 0; h--) {
-                srcbyte=(const BYTE*)srcbits;
+                srcbyte = srcbits;
                 for (x = left; x < width+left; x++) {
                     XPutPixel(bmpImage, x, h,
                               X11DRV_PALETTE_ToPhysical
diff --git a/dlls/winex11.drv/event.c b/dlls/winex11.drv/event.c
index 8e7eba45b84..ad42ef22f04 100644
--- a/dlls/winex11.drv/event.c
+++ b/dlls/winex11.drv/event.c
@@ -834,8 +834,8 @@ static void EVENT_DropURLs( HWND hWnd, XClientMessageEvent *event )
       if( lpDrop ) {
           WND *pDropWnd = WIN_GetPtr( hWnd );
 	  lpDrop->pFiles = sizeof(DROPFILES);
-	  lpDrop->pt.x = (INT)x;
-	  lpDrop->pt.y = (INT)y;
+	  lpDrop->pt.x = x;
+	  lpDrop->pt.y = y;
 	  lpDrop->fNC =
 	    ( x < (pDropWnd->rectClient.left - pDropWnd->rectWindow.left)  ||
 	      y < (pDropWnd->rectClient.top - pDropWnd->rectWindow.top)    ||
diff --git a/dlls/winex11.drv/opengl.c b/dlls/winex11.drv/opengl.c
index 6df2713b582..d297002bcce 100644
--- a/dlls/winex11.drv/opengl.c
+++ b/dlls/winex11.drv/opengl.c
@@ -476,14 +476,14 @@ LOAD_FUNCPTR(glXFreeMemoryNV)
      */
 
     if(glxRequireVersion(3)) {
-        pglXChooseFBConfig = (void*)pglXGetProcAddressARB((const GLubyte *) "glXChooseFBConfig");
-        pglXGetFBConfigAttrib = (void*)pglXGetProcAddressARB((const GLubyte *) "glXGetFBConfigAttrib");
-        pglXGetVisualFromFBConfig = (void*)pglXGetProcAddressARB((const GLubyte *) "glXGetVisualFromFBConfig");
-        pglXQueryDrawable = (void*)pglXGetProcAddressARB((const GLubyte *) "glXQueryDrawable");
+        pglXChooseFBConfig = pglXGetProcAddressARB((const GLubyte *) "glXChooseFBConfig");
+        pglXGetFBConfigAttrib = pglXGetProcAddressARB((const GLubyte *) "glXGetFBConfigAttrib");
+        pglXGetVisualFromFBConfig = pglXGetProcAddressARB((const GLubyte *) "glXGetVisualFromFBConfig");
+        pglXQueryDrawable = pglXGetProcAddressARB((const GLubyte *) "glXQueryDrawable");
     } else if(glxRequireExtension("GLX_SGIX_fbconfig")) {
-        pglXChooseFBConfig = (void*)pglXGetProcAddressARB((const GLubyte *) "glXChooseFBConfigSGIX");
-        pglXGetFBConfigAttrib = (void*)pglXGetProcAddressARB((const GLubyte *) "glXGetFBConfigAttribSGIX");
-        pglXGetVisualFromFBConfig = (void*)pglXGetProcAddressARB((const GLubyte *) "glXGetVisualFromFBConfigSGIX");
+        pglXChooseFBConfig = pglXGetProcAddressARB((const GLubyte *) "glXChooseFBConfigSGIX");
+        pglXGetFBConfigAttrib = pglXGetProcAddressARB((const GLubyte *) "glXGetFBConfigAttribSGIX");
+        pglXGetVisualFromFBConfig = pglXGetProcAddressARB((const GLubyte *) "glXGetVisualFromFBConfigSGIX");
 
         /* The mesa libGL client library seems to forward glXQueryDrawable to the Xserver, so only
          * enable this function when the Xserver understand GLX 1.3 or newer
@@ -491,10 +491,10 @@ LOAD_FUNCPTR(glXFreeMemoryNV)
         pglXQueryDrawable = NULL;
      } else if(strcmp("ATI", WineGLInfo.glxClientVendor) == 0) {
         TRACE("Overriding ATI GLX capabilities!\n");
-        pglXChooseFBConfig = (void*)pglXGetProcAddressARB((const GLubyte *) "glXChooseFBConfig");
-        pglXGetFBConfigAttrib = (void*)pglXGetProcAddressARB((const GLubyte *) "glXGetFBConfigAttrib");
-        pglXGetVisualFromFBConfig = (void*)pglXGetProcAddressARB((const GLubyte *) "glXGetVisualFromFBConfig");
-        pglXQueryDrawable = (void*)pglXGetProcAddressARB((const GLubyte *) "glXQueryDrawable");
+        pglXChooseFBConfig = pglXGetProcAddressARB((const GLubyte *) "glXChooseFBConfig");
+        pglXGetFBConfigAttrib = pglXGetProcAddressARB((const GLubyte *) "glXGetFBConfigAttrib");
+        pglXGetVisualFromFBConfig = pglXGetProcAddressARB((const GLubyte *) "glXGetVisualFromFBConfig");
+        pglXQueryDrawable = pglXGetProcAddressARB((const GLubyte *) "glXQueryDrawable");
 
         /* Use client GLX information in case of the ATI drivers. We override the
          * capabilities over here and not somewhere else as ATI might better their
@@ -507,13 +507,13 @@ LOAD_FUNCPTR(glXFreeMemoryNV)
 
     if(glxRequireExtension("GLX_ATI_render_texture")) {
         use_render_texture_ati = 1;
-        pglXBindTexImageATI = (void*)pglXGetProcAddressARB((const GLubyte *) "glXBindTexImageATI");
-        pglXReleaseTexImageATI = (void*)pglXGetProcAddressARB((const GLubyte *) "glXReleaseTexImageATI");
-        pglXDrawableAttribATI = (void*)pglXGetProcAddressARB((const GLubyte *) "glXDrawableAttribATI");
+        pglXBindTexImageATI = pglXGetProcAddressARB((const GLubyte *) "glXBindTexImageATI");
+        pglXReleaseTexImageATI = pglXGetProcAddressARB((const GLubyte *) "glXReleaseTexImageATI");
+        pglXDrawableAttribATI = pglXGetProcAddressARB((const GLubyte *) "glXDrawableAttribATI");
     }
 
     if(glxRequireExtension("GLX_MESA_copy_sub_buffer")) {
-        pglXCopySubBufferMESA = (void*)pglXGetProcAddressARB((const GLubyte *) "glXCopySubBufferMESA");
+        pglXCopySubBufferMESA = pglXGetProcAddressARB((const GLubyte *) "glXCopySubBufferMESA");
     }
 
     X11DRV_WineGL_LoadExtensions();
@@ -1047,7 +1047,7 @@ int X11DRV_ChoosePixelFormat(X11DRV_PDEVICE *physDev,
     if (TRACE_ON(opengl)) {
         TRACE("(%p,%p)\n", physDev, ppfd);
 
-        dump_PIXELFORMATDESCRIPTOR((const PIXELFORMATDESCRIPTOR *) ppfd);
+        dump_PIXELFORMATDESCRIPTOR(ppfd);
     }
 
     wine_tsx11_lock();
@@ -1919,7 +1919,7 @@ static BOOL internal_wglUseFontBitmaps(HDC hdc, DWORD first, DWORD count, DWORD
          pglNewList(listBase++, GL_COMPILE);
          if (needed_size != 0) {
              pglBitmap(gm.gmBlackBoxX, gm.gmBlackBoxY,
-                     0 - (int) gm.gmptGlyphOrigin.x, (int) gm.gmBlackBoxY - (int) gm.gmptGlyphOrigin.y,
+                     0 - gm.gmptGlyphOrigin.x, (int) gm.gmBlackBoxY - gm.gmptGlyphOrigin.y,
                      gm.gmCellIncX, gm.gmCellIncY,
                      gl_bitmap);
          } else {
@@ -2320,7 +2320,7 @@ static HPBUFFERARB WINAPI X11DRV_wglCreatePbufferARB(HDC hdc, int iPixelFormat,
 create_failed:
     HeapFree(GetProcessHeap(), 0, object);
     TRACE("->(FAILED)\n");
-    return (HPBUFFERARB) NULL;
+    return NULL;
 }
 
 /**
diff --git a/dlls/winex11.drv/wintab.c b/dlls/winex11.drv/wintab.c
index d7bdb6aef5f..0987129f339 100644
--- a/dlls/winex11.drv/wintab.c
+++ b/dlls/winex11.drv/wintab.c
@@ -602,7 +602,7 @@ void X11DRV_LoadTabletInfo(HWND hwnddefault)
                 cursor->TYPE = CSR_TYPE_ERASER;
 
 
-            any = (XAnyClassPtr) (target->inputclassinfo);
+            any = target->inputclassinfo;
 
             for (class_loop = 0; class_loop < target->num_classes; class_loop++)
             {