create class name automatically

1 files changed, 24 insertions, 2 deletions

diff --git a/alf/alf.cpp b/alf/alf.cpp
index 78eed99..fbc7822 100644
--- a/alf/alf.cpp
+++ b/alf/alf.cpp
@@ -1,5 +1,7 @@
 #include "alfpriv.h"
 
+#include <rpc.h>
+
 /* ALF App and Window */
 
 static void
@@ -527,13 +529,33 @@ ALF_RegisterWindowClass(ALFAPP app, const ALFWindowClassParams *params)
     WNDCLASS cls;
     ZeroMemory(&cls, sizeof(cls));
 
-    // TODO: autogenerate class name
+    const TCHAR *classNamePtr = params->className;
+    TCHAR  classNameBuf[256];
+    if (!classNamePtr) {
+        ZeroMemory(classNameBuf, sizeof(classNameBuf));
+        classNamePtr = classNameBuf;
+
+        UUID uuid;
+        UuidCreate(&uuid);
+
+#ifdef UNICODE
+        unsigned short *uuidstr = NULL;
+#else
+        unsigned char *uuidstr = NULL;
+#endif
+        UuidToString(&uuid, &uuidstr);
+
+        lstrcpy(classNameBuf, TEXT("ALFWindow."));
+        lstrcat(classNameBuf, (LPCTSTR)uuidstr);
+
+        RpcStringFree(&uuidstr);
+    }
 
     cls.style = params->classStyle;
     cls.hInstance = app->hInstance;
     cls.hCursor = LoadCursor(NULL, (LPTSTR)IDC_ARROW);
     cls.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1);
-    cls.lpszClassName = params->className;
+    cls.lpszClassName = classNamePtr;
     cls.cbWndExtra = sizeof(void*);
     cls.cbClsExtra = sizeof(void*)*2;
     cls.lpfnWndProc = DefWindowProc;