diff --git a/Docs/src/attributes.but b/Docs/src/attributes.but
index 1c445f69..b100e9b1 100644
--- a/Docs/src/attributes.but
+++ b/Docs/src/attributes.but
@@ -10,13 +10,13 @@ The commands below all adjust attributes of the installer. These attributes cont
 
 \c (left|right|top|bottom) (width|height) [padding]
 
-Adds a branding image on the top, bottom, left, or right of the installer. Its size will be set according to the width/height specified, the installer width/height and the installers font. The final size will not always be what you requested; have a look at the output of the command for the actual size. Because this depends on the installers font, you should use \R{asetfont}{SetFont} before \R{aaddbrandingimage}{AddBrandingImage}. The default padding value is 2.
+Adds a branding image on the top, bottom, left, or right of the installer. Its size will be set according to the width/height specified, the installer width/height and the installers font. The final size will not always be what you requested; have a look at the output of the command for the actual size. Because this depends on the installers font, you should use \R{asetfont}{SetFont} before AddBrandingImage. The default padding value is 2. The numbers can be suffixed with \c{u} to specify dialog units instead of pixels.
 
-\R{aaddbrandingimage}{AddBrandingImage} only adds a placeholder for an image. To set the image itself at runtime, use \R{setbrandingimage}{SetBrandingImage}.
+AddBrandingImage only adds a placeholder for an image. To set the image itself at runtime, use \R{setbrandingimage}{SetBrandingImage}.
 
 \c AddBrandingImage left 100
 \c AddBrandingImage right 50
-\c AddBrandingImage top 20
+\c AddBrandingImage top 20u 3u
 \c AddBrandingImage bottom 35
 \c AddBrandingImage left 100 5
 
diff --git a/Docs/src/history.but b/Docs/src/history.but
index ce7152d0..535b6726 100644
--- a/Docs/src/history.but
+++ b/Docs/src/history.but
@@ -20,10 +20,12 @@ Released on ??? ??th, 20??
 
 \b Added NTMARTA to preload list to fix rare Windows 7 security issue (\W{http://sf.net/p/nsis/bugs/1204}{bug #1204})
 
-\b MakeNSIS prints -CMDHELP to stdout (\W{http://sf.net/p/nsis/bugs/1203}{bug #1203})
+\b AddBrandingImage now supports dialog units
 
 \b Fixed !macroundef of last defined macro bug
 
+\b MakeNSIS prints -CMDHELP to stdout (\W{http://sf.net/p/nsis/bugs/1203}{bug #1203})
+
 \S2{} Translations
 
 \b Added Hind\u012b{i} (\W{http://sf.net/p/nsis/patches/289}{patch #289})
diff --git a/Examples/gfx.nsi b/Examples/gfx.nsi
index 9514ed21..05af8529 100644
--- a/Examples/gfx.nsi
+++ b/Examples/gfx.nsi
@@ -29,7 +29,7 @@ XPStyle on
 ; It is not enough to just add the placeholder, we must set the image too...
 ; We will later set the image in every pre-page function.
 ; We can also set just one persistent image in .onGUIInit
-AddBrandingImage left 100
+AddBrandingImage left 100u
 
 ; Sets the font of the installer
 SetFont "Comic Sans MS" 8
diff --git a/SConstruct b/SConstruct
index c885d091..15402c38 100644
--- a/SConstruct
+++ b/SConstruct
@@ -147,8 +147,7 @@ if 'msvc' in defenv['TOOLS'] or 'mstoolkit' in defenv['TOOLS']:
 	ignore_tests = 'none'
 else:
 	ignore_tests = ','.join(Split("""
-Examples/makensis.nsi
-Examples/gfx.nsi"""))
+Examples/makensis.nsi"""))
 
 # version
 opts.Add(('VERSION', 'Version of NSIS', cvs_version))
diff --git a/Source/DialogTemplate.h b/Source/DialogTemplate.h
index 8471ae16..17dc0bea 100644
--- a/Source/DialogTemplate.h
+++ b/Source/DialogTemplate.h
@@ -124,6 +124,7 @@ public:
   void  MoveAll(short x, short y);
   void  Resize(short x, short y);
 #ifdef _WIN32
+  static inline bool SupportsDialogUnitComputation() { return true; }
   void  PixelsToDlgUnits(short& x, short& y);
   void  PixelsToDlgUnits(SIZE& siz);
   void  DlgUnitsToPixels(short& x, short& y);
@@ -131,6 +132,10 @@ public:
   void  RTrimToString(WORD id, TCHAR *str, int margins);
   void  LTrimToString(WORD id, TCHAR *str, int margins);
   void  CTrimToString(WORD id, TCHAR *str, int margins);
+#else
+  static inline bool SupportsDialogUnitComputation() { return false; }
+  inline void PixelsToDlgUnits(short& x, short& y) { assert(0); }
+  inline void DlgUnitsToPixels(short& x, short& y) { assert(0); }
 #endif
   void  ConvertToRTL();
   BYTE* Save(DWORD& dwSize);
diff --git a/Source/script.cpp b/Source/script.cpp
index bb7fe37c..c7628db5 100644
--- a/Source/script.cpp
+++ b/Source/script.cpp
@@ -50,6 +50,24 @@ using namespace std;
 #define REGROOTKEYTOINT(hk) ( (INT) (((INT_PTR)(hk)) & 0xffffffff) ) // Masking off non-existing top bits to make GCC happy
 #define REGROOTKEYTOINTEX(hk, removeviewbits) ( REGROOTKEYTOINT(hk) & ~(removeviewbits ? (REGROOTVIEW32|REGROOTVIEW64) : 0) )
 
+#ifdef NSIS_CONFIG_VISIBLE_SUPPORT
+typedef enum { LU_INVALID = -1, LU_PIXEL = 0, LU_DIALOG } LAYOUTUNIT;
+static int ParseLayoutUnit(const TCHAR*Str, LAYOUTUNIT&LU)
+{
+  TCHAR buf[200];
+  int succ, val = LineParser::parse_int(Str, &succ);
+  if (succ) return (LU = LU_PIXEL, val);
+  size_t cch = my_strncpy(buf, Str, COUNTOF(buf));
+  if (cch > 1 && S7IsChEqualI('u', buf[cch-1])) // Something with a 'u' suffix?
+  {
+    buf[cch-1] = _T('\0');
+    val = LineParser::parse_int(buf, &succ);
+    if (succ) return (LU = LU_DIALOG, val);
+  }
+  return (LU = LU_INVALID, -1);
+}
+#endif
+
 #ifdef NSIS_CONFIG_ENHANCEDUI_SUPPORT
 static bool LookupWinSysColorId(const TCHAR*Str, UINT&Clr)
 {
@@ -2121,19 +2139,20 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
       }
     return PS_OK;
     case TOK_ADDBRANDINGIMAGE:
-#ifdef _WIN32
       try {
-        int k=line.gettoken_enum(1,_T("top\0left\0bottom\0right\0"));
-        int wh=line.gettoken_int(2);
+        LAYOUTUNIT whtype, padtype;
+        int k = line.gettoken_enum(1,_T("top\0left\0bottom\0right\0")), defpadding = 2;
+        int wh = ParseLayoutUnit(line.gettoken_str(2), whtype);
         if (k == -1) PRINTHELP();
-        int padding = 2;
-        if (line.getnumtokens() == 4)
-          padding = line.gettoken_int(3);
-
+        int padding = (line.getnumtokens() >= 4) ? ParseLayoutUnit(line.gettoken_str(3), padtype) : (padtype = whtype, defpadding);
+        if (whtype == LU_INVALID || whtype != padtype)
+          throw runtime_error("Invalid number!");
         init_res_editor();
         BYTE* dlg = res_editor->GetResource(RT_DIALOG, IDD_INST, NSIS_DEFAULT_LANG);
         CDialogTemplate dt(dlg, build_unicode, uDefCodePage);
         res_editor->FreeResource(dlg);
+        if (whtype != LU_DIALOG && !CDialogTemplate::SupportsDialogUnitComputation())
+          throw runtime_error("Must use dialog units on non-Win32 platforms!");
 
         DialogItemTemplate brandingCtl = {0,};
         brandingCtl.dwStyle = SS_BITMAP | WS_CHILD | WS_VISIBLE;
@@ -2142,32 +2161,25 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
         brandingCtl.szTitle = NULL;
         brandingCtl.wId = IDC_BRANDIMAGE;
         brandingCtl.sHeight = brandingCtl.sWidth = wh;
-        dt.PixelsToDlgUnits(brandingCtl.sWidth, brandingCtl.sHeight);
-        if (k%2) {
-          // left (1) / right (3)
-
+        if (whtype == LU_PIXEL) dt.PixelsToDlgUnits(brandingCtl.sWidth, brandingCtl.sHeight);
+        if (k%2) { // left (1) / right (3)
           if (k & 2) // right
             brandingCtl.sX += dt.GetWidth();
           else // left
             dt.MoveAll(brandingCtl.sWidth + (padding * 2), 0);
 
           dt.Resize(brandingCtl.sWidth + (padding * 2), 0);
-
           brandingCtl.sHeight = dt.GetHeight() - (padding * 2);
         }
-        else {
-          // top (0) / bottom (2)
-
+        else { // top (0) / bottom (2)
           if (k & 2) // bottom
             brandingCtl.sY += dt.GetHeight();
           else // top
             dt.MoveAll(0, brandingCtl.sHeight + (padding * 2));
 
           dt.Resize(0, brandingCtl.sHeight + (padding * 2));
-
           brandingCtl.sWidth = dt.GetWidth() - (padding * 2);
         }
-
         dt.AddItem(brandingCtl);
 
         DWORD dwDlgSize;
@@ -2175,8 +2187,9 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
         res_editor->UpdateResource(RT_DIALOG, IDD_INST, NSIS_DEFAULT_LANG, dlg, dwDlgSize);
         dt.FreeSavedTemplate(dlg);
 
-        dt.DlgUnitsToPixels(brandingCtl.sWidth, brandingCtl.sHeight);
-        SCRIPT_MSG(_T("AddBrandingImage: %") NPRIs _T(" %ux%u\n"), line.gettoken_str(1), brandingCtl.sWidth, brandingCtl.sHeight);
+        if (whtype == LU_PIXEL) dt.DlgUnitsToPixels(brandingCtl.sWidth, brandingCtl.sHeight);
+        const char* unitstr = whtype == LU_PIXEL ? "pixels" : "dialog units";
+        SCRIPT_MSG(_T("AddBrandingImage: %") NPRIs _T(" %ux%u %") NPRIns _T("\n"), line.gettoken_str(1), brandingCtl.sWidth, brandingCtl.sHeight, unitstr);
 
         branding_image_found = true;
         branding_image_id = IDC_BRANDIMAGE;
@@ -2186,10 +2199,6 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
         return PS_ERROR;
       }
     return PS_OK;
-#else
-      ERROR_MSG(_T("Error: AddBrandingImage is disabled for non Win32 platforms.\n"));
-    return PS_ERROR;
-#endif //~ _WIN32
     case TOK_SETFONT:
     {
       unsigned char failed = 0;