.

Author: dtschump

CImg.h

@@ -54,7 +54,7 @@
 
 // Set version number of the library.
 #ifndef cimg_version
-#define cimg_version 401
+#define cimg_version 402
 
 /*-----------------------------------------------------------
  #
@@ -8076,6 +8076,7 @@ namespace cimg_library {
 
       // Destroy previous display window if existing.
       if (!is_empty()) assign(false);
+      if (!dimw || !dimh) return;
 
       // Open X11 display and retrieve graphical properties.
       cimg::X11_attr &X11_attr = cimg::X11_attr::ref();
@@ -9440,6 +9441,7 @@ namespace cimg_library {
 
       // Destroy previous window if existing.
       if (!is_empty()) assign();
+      if (!dimw || !dimh) return;
 
       // Set display variables.
       _width = std::min(dimw,(unsigned int)screen_width());
@@ -10138,27 +10140,17 @@ namespace cimg_library {
                  const unsigned int normalization_type=3,
                  const bool is_fullscreen=false, const bool closed_flag=false) {
 
-      // Destroy previous display window if existing.
-      if (!is_empty()) assign();
-      _data = new unsigned int[_width*_height];
-
-      cimg::SDL3_attr &SDL3_attr = cimg::SDL3_attr::ref();
-      SDL3_attr.lock();
-
-      if (SDL3_attr.nb_cimg_displays>=512) {
-        SDL3_attr.unlock();
-        throw CImgDisplayException("CImgDisplay::assign(): Max number of displays (512) already opened.");
-      }
-
       // Allocate space for window title.
       const char *const np_title = p_title?p_title:"";
       const unsigned int s = (unsigned int)std::strlen(np_title) + 1;
       char *const tmp_title = s?new char[s]:0;
       if (s) std::memcpy(tmp_title,np_title,s*sizeof(char));
 
+      // Destroy previous display window if existing.
+      if (!is_empty()) assign();
+      if (!dimw || !dimh) return;
+
       // Set display variables.
-      _width = std::min(dimw,(unsigned int)screen_width());
-      _height = std::min(dimh,(unsigned int)screen_height());
       _normalization = normalization_type<4?normalization_type:3;
       _is_fullscreen = is_fullscreen;
       _window_x = _window_y = cimg::type<int>::min();
@@ -10167,6 +10159,16 @@ namespace cimg_library {
       _paint_request = false;
       _title = tmp_title;
       _thread_id = SDL_GetCurrentThreadID();
+      _width = std::min(dimw,(unsigned int)screen_width());
+      _height = std::min(dimh,(unsigned int)screen_height());
+      _data = new unsigned int[_width*_height];
+
+      cimg::SDL3_attr &SDL3_attr = cimg::SDL3_attr::ref();
+      SDL3_attr.lock();
+      if (SDL3_attr.nb_cimg_displays>=512) {
+        SDL3_attr.unlock();
+        throw CImgDisplayException("CImgDisplay::assign(): Max number of displays (512) already opened.");
+      }
       flush();
 
       // Create window and renderer.

html/header.html

@@ -16,7 +16,7 @@
     <div class="header">
 <a href="index.html"><img alt="Logo" src="img/logo_header.jpg" class="center_image" style="margin-top:1em;"/></a>
       <h2  style="padding-bottom: 1em">
-        Latest stable version: <b><a href="http://cimg.eu/files/CImg_4.0.0.zip">4.0.0</a></b> (2026/07/01)
+        Latest stable version: <b><a href="http://cimg.eu/files/CImg_4.0.1.zip">4.0.1</a></b> (2026/07/02)
       </h2>
 
       <hr/>

html/header_doxygen.html

@@ -26,7 +26,7 @@
     <div class="header">
 <a href="../index.html"><img alt="Logo" src="../img/logo_header.jpg" class="center_image" style="margin-top:1em;"/></a>
       <h2  style="padding-bottom: 1em">
-        Latest stable version: <b><a href="http://cimg.eu/files/CImg_4.0.0.zip">4.0.0</a></b> (2026/07/01)
+        Latest stable version: <b><a href="http://cimg.eu/files/CImg_4.0.1.zip">4.0.1</a></b> (2026/07/02)
       </h2>
 
       <hr/>