user32: Fix LoadImage behavior with zero size and no LR_DEFAULTSIZE.

dlls/user32/cursoricon.c

@@ -422,7 +422,20 @@ static int CURSORICON_FindBestIcon( LPCVOID dir, fnGetCIEntry get_entry,
     /* Find Best Fit */
     iTotalDiff = 0xFFFFFFFF;
     iColorDiff = 0xFFFFFFFF;
-    for ( i = 0; get_entry( dir, i, &cx, &cy, &bits ); i++ )
+
+    if (loadflags & LR_DEFAULTSIZE)
+    {
+        if (!width) width = GetSystemMetrics( SM_CXICON );
+        if (!height) height = GetSystemMetrics( SM_CYICON );
+    }
+    else if (!width && !height)
+    {
+        /* use the size of the first entry */
+        if (!get_entry( dir, 0, &width, &height, &bits )) return -1;
+        iTotalDiff = 0;
+    }
+
+    for ( i = 0; iTotalDiff && get_entry( dir, i, &cx, &cy, &bits ); i++ )
     {
         iTempXDiff = abs(width - cx);
         iTempYDiff = abs(height - cy);
@@ -479,6 +492,18 @@ static int CURSORICON_FindBestCursor( LPCVOID dir, fnGetCIEntry get_entry,
 {
     int i, maxwidth, maxheight, cx, cy, bits, bestEntry = -1;
 
+    if (loadflags & LR_DEFAULTSIZE)
+    {
+        if (!width) width = GetSystemMetrics( SM_CXCURSOR );
+        if (!height) height = GetSystemMetrics( SM_CYCURSOR );
+    }
+    else if (!width && !height)
+    {
+        /* use the first entry */
+        if (!get_entry( dir, 0, &width, &height, &bits )) return -1;
+        return 0;
+    }
+
     /* Double height to account for AND and XOR masks */
 
     height *= 2;
@@ -782,8 +807,16 @@ static HICON CURSORICON_CreateIconFromBMI( BITMAPINFO *bmi, HMODULE module, LPCW
           return 0;
     }
 
-    if (!width) width = bmi->bmiHeader.biWidth;
-    if (!height) height = bmi->bmiHeader.biHeight/2;
+    if (cFlag & LR_DEFAULTSIZE)
+    {
+        if (!width) width = GetSystemMetrics( bIcon ? SM_CXICON : SM_CXCURSOR );
+        if (!height) height = GetSystemMetrics( bIcon ? SM_CYICON : SM_CYCURSOR );
+    }
+    else
+    {
+        if (!width) width = bmi->bmiHeader.biWidth;
+        if (!height) height = bmi->bmiHeader.biHeight/2;
+    }
     do_stretch = (bmi->bmiHeader.biHeight/2 != height) ||
                  (bmi->bmiHeader.biWidth != width);
 
@@ -2274,15 +2307,6 @@ HANDLE WINAPI LoadImageW( HINSTANCE hinst, LPCWSTR name, UINT type,
     TRACE_(resource)("(%p,%s,%d,%d,%d,0x%08x)\n",
                      hinst,debugstr_w(name),type,desiredx,desiredy,loadflags);
 
-    if (loadflags & LR_DEFAULTSIZE) {
-        if (type == IMAGE_ICON) {
-            if (!desiredx) desiredx = GetSystemMetrics(SM_CXICON);
-            if (!desiredy) desiredy = GetSystemMetrics(SM_CYICON);
-        } else if (type == IMAGE_CURSOR) {
-            if (!desiredx) desiredx = GetSystemMetrics(SM_CXCURSOR);
-            if (!desiredy) desiredy = GetSystemMetrics(SM_CYCURSOR);
-        }
-    }
     if (loadflags & LR_LOADFROMFILE) loadflags &= ~LR_SHARED;
     switch (type) {
     case IMAGE_BITMAP: