diff --git a/wintable/includethis.h b/wintable/includethis.h
new file mode 100644
index 0000000..5f1bf93
--- /dev/null
+++ b/wintable/includethis.h
@@ -0,0 +1,53 @@
+// 17 february 2015
+
+#define tableWindowClass L"gouitable"
+
+// start at WM_USER + 20 just in case for whatever reason we ever get the various dialog manager messages (see also http://blogs.msdn.com/b/oldnewthing/archive/2003/10/21/55384.aspx)
+// each of these returns nothing unless otherwise indicated
+enum {
+	// wParam - one of the type constants
+	// lParam - column name as a Unicode string
+	tableAddColumn = WM_USER + 20,
+	// wParam - 0
+	// lParam - pointer to intptr_t containing new count
+	tableSetRowCount,
+};
+
+enum {
+	tableColumnText,
+	tableColumnImage,
+	tableColumnCheckbox,
+	nTableColumnTypes,
+};
+
+// notification codes
+// note that these are positive; see http://blogs.msdn.com/b/oldnewthing/archive/2009/08/21/9877791.aspx
+// each of these is of type tableNM
+// all fields except data will always be set
+enum {
+	// data parameter is always 0
+	// for tableColumnText return should be WCHAR *
+	// for tableColumnImage return should be HBITMAP
+	// for tableColumnCheckbox return is nonzero for checked, zero for unchecked
+	tableNotificationGetCellData,
+	// data parameter is pointer, same as tableNotificationGetCellData
+	// not sent for checkboxes
+	// no return
+	tableNotificationFinishedWithCellData,
+	// data is zero
+	// no return
+	tableNotificationCellCheckboxToggled,
+};
+
+typedef struct tableNM tableNM;
+
+struct tableNM {
+	NMHDR nmhdr;
+	intptr_t row;
+	intptr_t column;
+	int columnType;
+	uintptr_t data;
+};
+
+// TODO have hInstance passed in
+extern void initTable(void (*panicfunc)(const char *msg, DWORD lastError), BOOL (*WINAPI tme)(LPTRACKMOUSEEVENT));
diff --git a/wintable/main.h b/wintable/main.h
index 02134d7..f5fc4c4 100644
--- a/wintable/main.h
+++ b/wintable/main.h
@@ -17,54 +17,7 @@
 // - send standard notification codes
 // - seriously figure out how we're going to update everything about the table in one place
 
-#define tableWindowClass L"gouitable"
-
-// start at WM_USER + 20 just in case for whatever reason we ever get the various dialog manager messages (see also http://blogs.msdn.com/b/oldnewthing/archive/2003/10/21/55384.aspx)
-// each of these returns nothing unless otherwise indicated
-enum {
-	// wParam - one of the type constants
-	// lParam - column name as a Unicode string
-	tableAddColumn = WM_USER + 20,
-	// wParam - 0
-	// lParam - pointer to intptr_t containing new count
-	tableSetRowCount,
-};
-
-enum {
-	tableColumnText,
-	tableColumnImage,
-	tableColumnCheckbox,
-	nTableColumnTypes,
-};
-
-// notification codes
-// note that these are positive; see http://blogs.msdn.com/b/oldnewthing/archive/2009/08/21/9877791.aspx
-// each of these is of type tableNM
-// all fields except data will always be set
-enum {
-	// data parameter is always 0
-	// for tableColumnText return should be WCHAR *
-	// for tableColumnImage return should be HBITMAP
-	// for tableColumnCheckbox return is nonzero for checked, zero for unchecked
-	tableNotificationGetCellData,
-	// data parameter is pointer, same as tableNotificationGetCellData
-	// not sent for checkboxes
-	// no return
-	tableNotificationFinishedWithCellData,
-	// data is zero
-	// no return
-	tableNotificationCellCheckboxToggled,
-};
-
-typedef struct tableNM tableNM;
-
-struct tableNM {
-	NMHDR nmhdr;
-	intptr_t row;
-	intptr_t column;
-	int columnType;
-	uintptr_t data;
-};
+#include "includethis.h"
 
 static void (*tablePanic)(const char *, DWORD) = NULL;
 #define panic(...) (*tablePanic)(__VA_ARGS__, GetLastError())