More Windows window class logic simplification. This will be needed for read-only TextFields, next.

1 files changed, 2 insertions, 7 deletions

diff --git a/winapi_windows.h b/winapi_windows.h
index db3b49e..f228d2e 100644
--- a/winapi_windows.h
+++ b/winapi_windows.h
@@ -23,6 +23,7 @@
 #include <windowsx.h>
 #include <vsstyle.h>
 #include <vssym32.h>
+#include <stdarg.h>
 
 // global messages unique to everything
 enum {
@@ -41,13 +42,6 @@ enum {
 	msgOpenFileDone,
 };
 
-// there are a number of places where we need to know what window class an arbitrary handle has
-// theoretically we could use the class atom to avoid a _wcsicmp()
-// however, raymond chen advises against this - http://blogs.msdn.com/b/oldnewthing/archive/2004/10/11/240744.aspx (and we're not in control of the Tab class, before you say anything)
-// MSDN says 256 is the maximum length of a class name; add a few characters just to be safe (because it doesn't say whether this includes the terminating null character)
-// TODO localize this to a helper function
-#define maxClassName 260
-
 // uitask_windows.c
 extern void uimsgloop(void);
 extern void issue(void *);
@@ -112,6 +106,7 @@ extern void getWindowText(HWND, WPARAM, LPWSTR);
 extern void setWindowText(HWND, LPWSTR);
 extern void updateWindow(HWND);
 extern void *getWindowData(HWND, UINT, WPARAM, LPARAM, LRESULT *);
+extern int windowClassOf(HWND, ...);
 extern BOOL sharedWndProc(HWND, UINT, WPARAM, LPARAM, LRESULT *);
 extern void paintControlBackground(HWND, HDC);