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diff --git a/dep/include/g3dlite/G3D/prompt.h b/dep/include/g3dlite/G3D/prompt.h
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+/** 
+ @file prompt.h
+ 
+ @maintainer Morgan McGuire, http://graphics.cs.williams.edu
+ @cite   Windows GUI code by Max McGuire
+
+ @created 2001-08-26
+ @edited  2006-08-13
+ */
+
+#ifndef G3D_PROMPT_H
+#define G3D_PROMPT_H
+
+#include "platform.h"
+#include <string>
+
+namespace G3D {
+
+/**
+  Prints a prompt to stdout and waits for user input.  The return value is
+  the number of the user's choice (the first is 0, if there are no
+  choices, returns 0). 
+ 
+  @param useGui Under Win32, use a GUI, not stdout prompt.
+  @param windowTitle The title for the prompt window
+  @param promptx The text string to prompt the user with
+  @param choice  An array of strings that are the choices the user may make
+  @param numChoices The length of choice.
+
+  @cite Windows dialog interface by Max McGuire, mmcguire@ironlore.com
+  @cite Font setting code by Kurt Miller, kurt@flipcode.com
+ */
+int prompt(
+    const char*     windowTitle,
+    const char*     promptx,
+    const char**    choice,
+    int             numChoices,
+    bool            useGui);
+
+/**
+  Prints a prompt and waits for user input.  The return value is
+  the number of the user's choice (the first is 0, if there are no
+  choices, returns 0).
+  <P>Uses GUI under Win32, stdout prompt otherwise.
+ */
+inline int prompt(
+    const char*     windowTitle,
+    const char*     promptx,
+    const char**    choice,
+    int             numChoices) {
+
+    return prompt(windowTitle, promptx, choice, numChoices, true);
+}
+
+
+/**
+ Displays a GUI prompt with "Ok" as the only choice.
+ */
+void msgBox(
+    const std::string& message,
+    const std::string& title = "Message");
+
+
+}; // namespace
+
+#endif
+