introduce early props

include/Mw/StringDefs.h

@@ -51,6 +51,9 @@
 #define MwNforeground "Sforeground"
 #define MwNsubForeground "SsubForeground"
 
+#define MwNvulkanExtension "SEvulkanExtension"
+#define MwNvulkanLayer "SEvulkanLayer"
+
 #define MwNpixmap "Vpixmap"
 #define MwNiconPixmap "ViconPixmap"
 #define MwNsizeHints "VsizeHints"

include/Mw/Widget/Vulkan.h

@@ -33,18 +33,6 @@ extern "C" {
  */
 MWDECL MwClass MwVulkanClass;
 
-/*!
- * @brief Add an extension to the list of extensions to enable prior to initialization.
- * @warning This must be called before MwCreateWidget.
- */
-MWDECL void MwVulkanEnableExtension(const char* ext_name);
-
-/*!
- * @brief Add an layer to the list of layers to enable prior to initialization.
- * @warning This must be called before MwCreateWidget.
- */
-MWDECL void MwVulkanEnableLayer(const char* ext_name);
-
 /*!
  * @brief Configuration options that can be passed to setup Vulkan before a widget is created.
  */