activating DrawRectangle optimization

[wxWidgets.git] / include / wx / msw / setup0.h

diff --git a/include/wx/msw/setup0.h b/include/wx/msw/setup0.h
index 22feb8ff63404d7882615c2a76c92c56b05a0f2d..453a5a0ed7b1981590e6f67815f0c9de21766221 100644 (file)
--- a/include/wx/msw/setup0.h
+++ b/include/wx/msw/setup0.h
@@ -267,6 +267,17 @@
 // Recommended setting: 1 if you want to support multiple languages
 #define wxUSE_PRINTF_POS_PARAMS      1
 
+// Enable the use of compiler-specific thread local storage keyword, if any.
+// This is used for wxTLS_XXX() macros implementation and normally should use
+// the compiler-provided support as it's simpler and more efficient, but must
+// not use it if wxWidgets is used in a dynamically loaded Win32 (i.e. using
+// LoadLibrary()/GetProcAddress()) as this triggers a bug in compiler TLS
+// support that results in crashes when any TLS variables are used. So if you
+// are building a Win32 DLL using wxWidgets that can be loaded dynamically, set
+// this to 0.
+//
+// Default is 1, but set to 0 if the scenario above is applicable.
+#define wxUSE_COMPILER_TLS 1
 
 // ----------------------------------------------------------------------------
 // Interoperability with the standard library.