From 6910f6539d74a59e6d773f4a5d311cb530c2db6e Mon Sep 17 00:00:00 2001
From: Ian C <ianc@noddybox.co.uk>
Date: Mon, 18 Apr 2005 00:52:51 +0000
Subject: Changed debug file location and added GetAppWindow to Common

---
 src/GNUmakefile      |  6 ++---
 src/common.cpp       | 66 +++++++++++++++++++++++++++++++++++++++++-----------
 src/debug.cpp        |  2 +-
 src/w32dlib/common.h | 27 ++++++++++++++++++++-
 4 files changed, 83 insertions(+), 18 deletions(-)

diff --git a/src/GNUmakefile b/src/GNUmakefile
index 88fc7a0..3d6115b 100644
--- a/src/GNUmakefile
+++ b/src/GNUmakefile
@@ -18,7 +18,7 @@
 #
 #  -------------------------------------------------------------------------
 #
-#  $Id: GNUmakefile,v 1.11 2005-04-17 00:34:01 ianc Exp $
+#  $Id: GNUmakefile,v 1.12 2005-04-18 00:52:51 ianc Exp $
 #
 
 
@@ -36,9 +36,9 @@ INSTALLDIR = /usr/local
 CREATECONF = 1
 
 # Uncomment this if you want a debug build.  Note that debug goes to a file
-# called debug.out in the pwd.
+# called c:\debug.out
 #
-#DEBUG = -g -DW32D_DEBUG
+# DEBUG = -g -DW32D_DEBUG
 
 #
 # **************************************** END OF CONFIGURATION 
diff --git a/src/common.cpp b/src/common.cpp
index 59c7695..3cd84a7 100644
--- a/src/common.cpp
+++ b/src/common.cpp
@@ -215,19 +215,6 @@ bool Common::SelectDir(HWND parent, const char *title, std::string& path)
 }
 
 
-// ------------------------------------------------------------
-//
-int CALLBACK Common::BrowseCallback(HWND w, UINT u, LPARAM p1, LPARAM p2)
-{
-    if (u==BFFM_INITIALIZED)
-    {
-	PostMessage(w,BFFM_SETSELECTION,TRUE,p2);
-    }
-
-    return 0;
-}
-
-
 // ------------------------------------------------------------
 //
 std::string Common::GetOSError()
@@ -262,6 +249,59 @@ HINSTANCE Common::GetInstance()
 }
 
 
+// ------------------------------------------------------------
+//
+HWND Common::GetAppWindow()
+{
+    EnumData data;
+
+    data.handle=0;
+    data.procid=GetCurrentProcessId();
+
+    W32DEBUGOUT("Looking for window for process " << data.procid);
+
+    EnumWindows(EnumCallback,reinterpret_cast<LPARAM>(&data));
+
+    W32DEBUGOUT("Got window handle " << data.handle <<
+    		" for process " << data.procid);
+
+    return data.handle;
+}
+
+
+// ------------------------------------------------------------
+//
+int CALLBACK Common::BrowseCallback(HWND w, UINT u, LPARAM p1, LPARAM p2)
+{
+    if (u==BFFM_INITIALIZED)
+    {
+	PostMessage(w,BFFM_SETSELECTION,TRUE,p2);
+    }
+
+    return 0;
+}
+
+
+// ------------------------------------------------------------
+//
+BOOL CALLBACK Common::EnumCallback(HWND w, LPARAM p)
+{
+    DWORD id;
+    EnumData *data=reinterpret_cast<EnumData*>(p);
+
+    GetWindowThreadProcessId(w,&id);
+
+    if (id==data->procid)
+    {
+    	data->handle=w;
+	return FALSE;
+    }
+
+    return TRUE;
+}
+
+
 };	// namespace W32DLib
 
+
 // END OF FILE
diff --git a/src/debug.cpp b/src/debug.cpp
index f234442..7885d77 100644
--- a/src/debug.cpp
+++ b/src/debug.cpp
@@ -232,7 +232,7 @@ void W32Debug(const char *func, const char *file, const char *msg)
 
     if (!fp)
     {
-    	fp=fopen("debug.out","w");
+    	fp=fopen("c:/debug.out","w");
 	setbuf(fp,0);
     }
 
diff --git a/src/w32dlib/common.h b/src/w32dlib/common.h
index de5364f..67b7b47 100644
--- a/src/w32dlib/common.h
+++ b/src/w32dlib/common.h
@@ -172,15 +172,40 @@ namespace W32DLib
 
 	/// \brief Get an HINSTANCE.
 	///
+	/// This should (though it hasn't been proved in all cases) get the
+	/// apropriate HINSTANCE for the application or DLL the library has
+	/// be linked into.
+	///
 	/// \return The HINSTANCE
 	///
 	static HINSTANCE	GetInstance();
 
 
+	/// \brief Get an application's top-level window.
+	///
+	/// This finds the top-level window for the application.  This is
+	/// mainly a helper for when you're in a DLL, cannot access the
+	/// applications window handle any other way and wish to display a
+	/// modal Dialog.
+	///
+	/// \return The window handle, or zero for error or the window couldn't
+	///  be found.
+	///
+	static HWND		GetAppWindow();
+
+
     private:
     	Common();
 
-	static CALLBACK int BrowseCallback(HWND w,UINT u,LPARAM p1,LPARAM p2);
+	struct EnumData
+	{
+	    HWND	handle;
+	    DWORD	procid;
+	};
+
+	static int CALLBACK BrowseCallback(HWND w,UINT u,LPARAM p1,LPARAM p2);
+
+	static BOOL CALLBACK EnumCallback(HWND w,LPARAM p);
 
     };	// class Common
 
-- 
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