diff --git a/hw/xwin/glx/indirect.c b/hw/xwin/glx/indirect.c
index 93cdb29d6..e4be64228 100644
--- a/hw/xwin/glx/indirect.c
+++ b/hw/xwin/glx/indirect.c
@@ -253,7 +253,7 @@ pfdOut(const PIXELFORMATDESCRIPTOR * pfd)
     ErrorF("PIXELFORMATDESCRIPTOR:\n");
     ErrorF("nSize = %u\n", pfd->nSize);
     ErrorF("nVersion = %u\n", pfd->nVersion);
-    ErrorF("dwFlags = %lu = {", pfd->dwFlags);
+    ErrorF("dwFlags = %u = {", (unsigned int)pfd->dwFlags);
     DUMP_PFD_FLAG(PFD_DOUBLEBUFFER);
     DUMP_PFD_FLAG(PFD_STEREO);
     DUMP_PFD_FLAG(PFD_DRAW_TO_WINDOW);
@@ -297,9 +297,9 @@ pfdOut(const PIXELFORMATDESCRIPTOR * pfd)
     ErrorF("cAuxBuffers = %hhu\n", pfd->cAuxBuffers);
     ErrorF("iLayerType = %hhu\n", pfd->iLayerType);
     ErrorF("bReserved = %hhu\n", pfd->bReserved);
-    ErrorF("dwLayerMask = %lu\n", pfd->dwLayerMask);
-    ErrorF("dwVisibleMask = %lu\n", pfd->dwVisibleMask);
-    ErrorF("dwDamageMask = %lu\n", pfd->dwDamageMask);
+    ErrorF("dwLayerMask = %u\n", (unsigned int)pfd->dwLayerMask);
+    ErrorF("dwVisibleMask = %u\n", (unsigned int)pfd->dwVisibleMask);
+    ErrorF("dwDamageMask = %u\n", (unsigned int)pfd->dwDamageMask);
     ErrorF("\n");
 }
 
@@ -1862,8 +1862,8 @@ glxWinCreateConfigs(HDC hdc, glxWinScreen * screen)
         if (!(pfd.dwFlags & (PFD_DRAW_TO_WINDOW | PFD_DRAW_TO_BITMAP)) ||
             !(pfd.dwFlags & PFD_SUPPORT_OPENGL)) {
             GLWIN_DEBUG_MSG
-                ("pixelFormat %d has unsuitable flags 0x%08lx, skipping", i + 1,
-                 pfd.dwFlags);
+                ("pixelFormat %d has unsuitable flags 0x%08x, skipping", i + 1,
+                 (unsigned int)pfd.dwFlags);
             continue;
         }
 
diff --git a/hw/xwin/winclipboard/xevents.c b/hw/xwin/winclipboard/xevents.c
index bf44ac959..aee6c86a2 100644
--- a/hw/xwin/winclipboard/xevents.c
+++ b/hw/xwin/winclipboard/xevents.c
@@ -309,7 +309,7 @@ winClipboardFlushXEvents(HWND hwnd,
             /* Access the clipboard */
             if (!OpenClipboard(hwnd)) {
                 ErrorF("winClipboardFlushXEvents - SelectionRequest - "
-                       "OpenClipboard () failed: %08lx\n", GetLastError());
+                       "OpenClipboard () failed: %08x\n", (unsigned int)GetLastError());
 
                 /* Abort */
                 fAbort = TRUE;
@@ -369,7 +369,7 @@ winClipboardFlushXEvents(HWND hwnd,
             }
             if (!hGlobal) {
                 ErrorF("winClipboardFlushXEvents - SelectionRequest - "
-                       "GetClipboardData () failed: %08lx\n", GetLastError());
+                       "GetClipboardData () failed: %08x\n", (unsigned int)GetLastError());
 
                 /* Abort */
                 fAbort = TRUE;
@@ -706,7 +706,7 @@ winClipboardFlushXEvents(HWND hwnd,
             /* Check that global memory was allocated */
             if (!hGlobal) {
                 ErrorF("winClipboardFlushXEvents - SelectionNotify "
-                       "GlobalAlloc failed, aborting: %ld\n", GetLastError());
+                       "GlobalAlloc failed, aborting: %08x\n", (unsigned int)GetLastError());
 
                 /* Abort */
                 fAbort = TRUE;
diff --git a/hw/xwin/windialogs.c b/hw/xwin/windialogs.c
index 6fe3fc442..c83b49bab 100644
--- a/hw/xwin/windialogs.c
+++ b/hw/xwin/windialogs.c
@@ -443,9 +443,9 @@ winChangeDepthDlgProc(HWND hwndDialog, UINT message,
 #endif
 
 #if CYGDEBUG
-        winDebug("winChangeDepthDlgProc - WM_INITDIALOG - orig bpp: %d, "
+        winDebug("winChangeDepthDlgProc - WM_INITDIALOG - orig bpp: %u, "
                  "current bpp: %d\n",
-                 s_pScreenInfo->dwBPP,
+                 (unsigned int)s_pScreenInfo->dwBPP,
                  GetDeviceCaps(s_pScreenPriv->hdcScreen, BITSPIXEL));
 #endif
 
@@ -455,9 +455,9 @@ winChangeDepthDlgProc(HWND hwndDialog, UINT message,
 
     case WM_DISPLAYCHANGE:
 #if CYGDEBUG
-        winDebug("winChangeDepthDlgProc - WM_DISPLAYCHANGE - orig bpp: %d, "
+        winDebug("winChangeDepthDlgProc - WM_DISPLAYCHANGE - orig bpp: %u, "
                  "new bpp: %d\n",
-                 s_pScreenInfo->dwBPP,
+                 (unsigned int)s_pScreenInfo->dwBPP,
                  GetDeviceCaps(s_pScreenPriv->hdcScreen, BITSPIXEL));
 #endif
 
diff --git a/hw/xwin/winkeybd.c b/hw/xwin/winkeybd.c
index e7202a6cb..f0342259b 100644
--- a/hw/xwin/winkeybd.c
+++ b/hw/xwin/winkeybd.c
@@ -504,7 +504,7 @@ winSendKeyEvent(DWORD dwKey, Bool fDown)
     QueueKeyboardEvents(g_pwinKeyboard, fDown ? KeyPress : KeyRelease,
                         dwKey + MIN_KEYCODE);
 
-    winDebug("winSendKeyEvent: dwKey: %d, fDown: %d\n", dwKey, fDown);
+    winDebug("winSendKeyEvent: dwKey: %u, fDown: %u\n", (unsigned int)dwKey, fDown);
 }
 
 BOOL
diff --git a/hw/xwin/winkeyhook.c b/hw/xwin/winkeyhook.c
index fe77b2190..66d68f63d 100644
--- a/hw/xwin/winkeyhook.c
+++ b/hw/xwin/winkeyhook.c
@@ -84,7 +84,7 @@ winKeyboardMessageHookLL(int iCode, WPARAM wParam, LPARAM lParam)
     /* Pass keystrokes on to our main message loop */
     if (iCode == HC_ACTION) {
         winDebug("winKeyboardMessageHook: vkCode: %08x scanCode: %08x\n",
-                 p->vkCode, p->scanCode);
+                 (unsigned int)p->vkCode, (unsigned int)p->scanCode);
 
         switch (wParam) {
         case WM_KEYDOWN:
diff --git a/hw/xwin/winmultiwindowwindow.c b/hw/xwin/winmultiwindowwindow.c
index 4a208dd6c..91bd956f6 100644
--- a/hw/xwin/winmultiwindowwindow.c
+++ b/hw/xwin/winmultiwindowwindow.c
@@ -954,7 +954,7 @@ winAdjustXWindow(WindowPtr pWin, HWND hwnd)
     dwExStyle = GetWindowLongPtr(hwnd, GWL_EXSTYLE);
     dwStyle = GetWindowLongPtr(hwnd, GWL_STYLE);
 #ifdef CYGMULTIWINDOW_DEBUG
-    winDebug("\tWindowStyle: %08x %08x\n", dwStyle, dwExStyle);
+    winDebug("\tWindowStyle: %08x %08x\n", (unsigned int)dwStyle, (unsigned int)dwExStyle);
 #endif
     AdjustWindowRectEx(&rcDraw, dwStyle, FALSE, dwExStyle);
 
diff --git a/hw/xwin/winmultiwindowwndproc.c b/hw/xwin/winmultiwindowwndproc.c
index ab892f291..eb7b55e4d 100644
--- a/hw/xwin/winmultiwindowwndproc.c
+++ b/hw/xwin/winmultiwindowwndproc.c
@@ -1064,7 +1064,7 @@ winTopLevelWindowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
         dwStyle = GetWindowLongPtr(hwnd, GWL_STYLE);
 
         winDebug("winTopLevelWindowProc - WM_STYLECHANGING from %08x %08x\n",
-                 dwStyle, dwExStyle);
+                 (unsigned int)dwStyle, (unsigned int)dwExStyle);
 
         if (wParam == GWL_EXSTYLE)
             dwExStyle = newStyle;
@@ -1073,7 +1073,7 @@ winTopLevelWindowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
             dwStyle = newStyle;
 
         winDebug("winTopLevelWindowProc - WM_STYLECHANGING to %08x %08x\n",
-                 dwStyle, dwExStyle);
+                 (unsigned int)dwStyle, (unsigned int)dwExStyle);
 
         /* Get client rect in screen coordinates */
         wi.cbSize = sizeof(WINDOWINFO);
diff --git a/hw/xwin/winscrinit.c b/hw/xwin/winscrinit.c
index e68ee1227..735ce9325 100644
--- a/hw/xwin/winscrinit.c
+++ b/hw/xwin/winscrinit.c
@@ -89,8 +89,8 @@ winScreenInit(ScreenPtr pScreen, int argc, char **argv)
     DWORD dwInitialBPP;
 
 #if CYGDEBUG || YES
-    winDebug("winScreenInit - dwWidth: %ld dwHeight: %ld\n",
-             pScreenInfo->dwWidth, pScreenInfo->dwHeight);
+    winDebug("winScreenInit - dwWidth: %u dwHeight: %u\n",
+             (unsigned int)pScreenInfo->dwWidth, (unsigned int)pScreenInfo->dwHeight);
 #endif
 
     /* Allocate privates for this screen */
diff --git a/hw/xwin/winshadddnl.c b/hw/xwin/winshadddnl.c
index 48599b266..d4f940ec1 100644
--- a/hw/xwin/winshadddnl.c
+++ b/hw/xwin/winshadddnl.c
@@ -200,8 +200,10 @@ winAllocateFBShadowDDNL(ScreenPtr pScreen)
     DDPIXELFORMAT ddpfPrimary;
 
 #if CYGDEBUG
-    winDebug("winAllocateFBShadowDDNL - w %d h %d d %d\n",
-             pScreenInfo->dwWidth, pScreenInfo->dwHeight, pScreenInfo->dwDepth);
+    winDebug("winAllocateFBShadowDDNL - w %u h %u d %u\n",
+             (unsigned int)pScreenInfo->dwWidth,
+             (unsigned int)pScreenInfo->dwHeight,
+             (unsigned int)pScreenInfo->dwDepth);
 #endif
 
     /* Set the padded screen width */
@@ -400,10 +402,11 @@ winAllocateFBShadowDDNL(ScreenPtr pScreen)
 
 #if CYGDEBUG
     winDebug("winAllocateFBShadowDDNL - Primary masks: %08x %08x %08x "
-             "dwRGBBitCount: %d\n",
-             ddpfPrimary.u2.dwRBitMask,
-             ddpfPrimary.u3.dwGBitMask,
-             ddpfPrimary.u4.dwBBitMask, ddpfPrimary.u1.dwRGBBitCount);
+             "dwRGBBitCount: %u\n",
+             (unsigned int)ddpfPrimary.u2.dwRBitMask,
+             (unsigned int)ddpfPrimary.u3.dwGBitMask,
+             (unsigned int)ddpfPrimary.u4.dwBBitMask,
+             (unsigned int)ddpfPrimary.u1.dwRGBBitCount);
 #endif
 
     /* Describe the shadow surface to be created */
diff --git a/hw/xwin/winshadgdi.c b/hw/xwin/winshadgdi.c
index 3d222ad4b..7c31175f4 100644
--- a/hw/xwin/winshadgdi.c
+++ b/hw/xwin/winshadgdi.c
@@ -121,7 +121,7 @@ winQueryScreenDIBFormat(ScreenPtr pScreen, BITMAPINFOHEADER * pbmih)
     pdw = (DWORD *) ((CARD8 *) pbmih + sizeof(BITMAPINFOHEADER));
 
     winDebug("winQueryScreenDIBFormat - First call masks: %08x %08x %08x\n",
-             pdw[0], pdw[1], pdw[2]);
+             (unsigned int)pdw[0], (unsigned int)pdw[1], (unsigned int)pdw[2]);
 #endif
 
     /* Get optimal color table, or the optimal bitfields */
@@ -197,12 +197,12 @@ winQueryRGBBitsAndMasks(ScreenPtr pScreen)
 
 #if CYGDEBUG
         winDebug("%s - Masks: %08x %08x %08x\n", __FUNCTION__,
-                 pdw[0], pdw[1], pdw[2]);
+                 (unsigned int)pdw[0], (unsigned int)pdw[1], (unsigned int)pdw[2]);
         winDebug("%s - Bitmap: %dx%d %d bpp %d planes\n", __FUNCTION__,
                  pbmih->biWidth, pbmih->biHeight, pbmih->biBitCount,
                  pbmih->biPlanes);
-        winDebug("%s - Compression: %d %s\n", __FUNCTION__,
-                 pbmih->biCompression,
+        winDebug("%s - Compression: %u %s\n", __FUNCTION__,
+                 (unsigned int)pbmih->biCompression,
                  (pbmih->biCompression ==
                   BI_RGB ? "(BI_RGB)" : (pbmih->biCompression ==
                                          BI_RLE8 ? "(BI_RLE8)" : (pbmih->