From f19f813537c7aea1c20749c914e756b54a9c3cf5 Mon Sep 17 00:00:00 2001
From: Igor Pavlov <87184205+ip7z@users.noreply.github.com>
Date: Mon, 27 Dec 2021 00:00:00 +0000
Subject: '21.07'

---
 CPP/Windows/DLL.h | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 CPP/Windows/DLL.h

(limited to 'CPP/Windows/DLL.h')

diff --git a/CPP/Windows/DLL.h b/CPP/Windows/DLL.h
new file mode 100644
index 0000000..0c093ee
--- /dev/null
+++ b/CPP/Windows/DLL.h
@@ -0,0 +1,84 @@
+// Windows/DLL.h
+
+#ifndef __WINDOWS_DLL_H
+#define __WINDOWS_DLL_H
+
+#include "../Common/MyString.h"
+
+namespace NWindows {
+namespace NDLL {
+
+#ifdef _WIN32
+
+#ifdef UNDER_CE
+#define My_GetProcAddress(module, procName) (void *)::GetProcAddressA(module, procName)
+#else
+#define My_GetProcAddress(module, procName) (void *)::GetProcAddress(module, procName)
+#endif
+
+/* Win32: Don't call CLibrary::Free() and FreeLibrary() from another
+    FreeLibrary() code: detaching code in DLL entry-point or in
+    destructors of global objects in DLL module. */
+
+class CLibrary
+{
+  HMODULE _module;
+
+  // CLASS_NO_COPY(CLibrary);
+public:
+  CLibrary(): _module(NULL) {};
+  ~CLibrary() { Free(); }
+
+  operator HMODULE() const { return _module; }
+  HMODULE* operator&() { return &_module; }
+  bool IsLoaded() const { return (_module != NULL); }
+
+  void Attach(HMODULE m)
+  {
+    Free();
+    _module = m;
+  }
+  HMODULE Detach()
+  {
+    HMODULE m = _module;
+    _module = NULL;
+    return m;
+  }
+
+  bool Free() throw();
+  bool LoadEx(CFSTR path, DWORD flags = LOAD_LIBRARY_AS_DATAFILE) throw();
+  bool Load(CFSTR path) throw();
+  // FARPROC
+  void *GetProc(LPCSTR procName) const { return My_GetProcAddress(_module, procName); }
+};
+
+#else
+
+typedef void * HMODULE;
+// typedef int (*FARPROC)();
+// typedef void *FARPROC;
+
+class CLibrary
+{
+  HMODULE _module;
+
+  // CLASS_NO_COPY(CLibrary);
+public:
+  CLibrary(): _module(NULL) {};
+  ~CLibrary() { Free(); }
+
+  bool Free() throw();
+  bool Load(CFSTR path) throw();
+  // FARPROC
+  void *GetProc(LPCSTR procName) const; // { return My_GetProcAddress(_module, procName); }
+};
+
+#endif
+
+bool MyGetModuleFileName(FString &path);
+
+FString GetModuleDirPrefix();
+
+}}
+
+#endif
-- 
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