doc: Removed usage of Qt 3 support member from example code

This code is used in the documentation for QRegion::isEmpty. It
shouldn't mention isNull, since isEmpty replaces it in the case of
QRegion (unlike QRect).

1 files changed, 1 insertions, 5 deletions

diff --git a/doc/src/snippets/code/src_gui_painting_qregion_unix.cpp b/doc/src/snippets/code/src_gui_painting_qregion_unix.cpp
index fb1f363..ea42e70 100644
--- a/doc/src/snippets/code/src_gui_painting_qregion_unix.cpp
+++ b/doc/src/snippets/code/src_gui_painting_qregion_unix.cpp
@@ -41,19 +41,15 @@
 
 //! [0]
 QRegion r1(10, 10, 20, 20);
-r1.isNull();                // false
 r1.isEmpty();               // false
 
-QRegion r2(40, 40, 20, 20);
 QRegion r3;
-r3.isNull();                // true
 r3.isEmpty();               // true
 
+QRegion r2(40, 40, 20, 20);
 r3 = r1.intersected(r2);    // r3: intersection of r1 and r2
-r3.isNull();                // false
 r3.isEmpty();               // true
 
 r3 = r1.united(r2);         // r3: union of r1 and r2
-r3.isNull();                // false
 r3.isEmpty();               // false
 //! [0]