Windows clipboard implementation.

Author: kovacsv

Sources/WindowsAppSupport/WAS_ClipboardHandler.cpp

@@ -0,0 +1,94 @@
+#include "WAS_ClipboardHandler.hpp"
+#include "NE_Debug.hpp"
+#include "NUIE_VersionInfo.hpp"
+
+namespace WAS
+{
+
+ClipboardHandler::ClipboardHandler () :
+	NUIE::ClipboardHandler (),
+	formatId (0)
+{
+	formatId = RegisterClipboardFormat (VSE_APP_NAME);
+}
+
+ClipboardHandler::~ClipboardHandler ()
+{
+
+}
+
+NUIE::Version ClipboardHandler::GetCurrentVersion () const
+{
+	return NUIE::GetCurrentVersion ();
+}
+
+bool ClipboardHandler::IsCompatibleVersion (const NUIE::Version& version) const
+{
+	return NUIE::IsCompatibleVersion (version);
+}
+
+bool ClipboardHandler::HasClipboardContent () const
+{
+	if (DBGERROR (!OpenClipboard (NULL))) {
+		return false;
+	}
+
+	HGLOBAL clipboardHandle = GetClipboardData (formatId);
+	bool hasClipboardContent = (clipboardHandle != NULL);
+	CloseClipboard ();
+
+	return hasClipboardContent;
+}
+
+bool ClipboardHandler::GetClipboardContent (std::vector<char>& content) const
+{
+	if (DBGERROR (!OpenClipboard (NULL))) {
+		return false;
+	}
+	HGLOBAL clipboardHandle = GetClipboardData (formatId);
+	if (clipboardHandle == NULL) {
+		CloseClipboard ();
+		return false;
+	}
+
+	SIZE_T handleSize = GlobalSize (clipboardHandle);
+	if (handleSize == 0) {
+		return false;
+	}
+
+	char* pointer = (char*) GlobalLock (clipboardHandle);
+	content.assign (pointer, pointer + handleSize);
+	GlobalUnlock (clipboardHandle);
+	CloseClipboard ();
+
+	return true;
+}
+
+bool ClipboardHandler::SetClipboardContent (const std::vector<char>& content)
+{
+	if (DBGERROR (content.empty ())) {
+		return false;
+	}
+
+	if (DBGERROR (!OpenClipboard (NULL))) {
+		return false;
+	}
+
+	EmptyClipboard ();
+
+	HGLOBAL clipboardHandle = GlobalAlloc (GMEM_MOVEABLE, content.size ());
+	LPVOID pointer = GlobalLock (clipboardHandle);
+	memcpy (pointer, &content[0], content.size ());
+	GlobalUnlock (clipboardHandle);
+
+	HANDLE resultData = SetClipboardData (formatId, clipboardHandle);
+	if (DBGERROR (resultData == NULL)) {
+		CloseClipboard ();
+		return false;
+	}
+
+	CloseClipboard ();
+	return true;
+}
+
+}

Sources/WindowsAppSupport/WAS_ClipboardHandler.hpp

@@ -0,0 +1,29 @@
+#ifndef WAS_CLIPBOARDHANDLER_HPP
+#define WAS_CLIPBOARDHANDLER_HPP
+
+#include "WAS_IncludeWindowsHeaders.hpp"
+#include "NUIE_ClipboardHandler.hpp"
+
+namespace WAS
+{
+
+class ClipboardHandler : public NUIE::ClipboardHandler
+{
+public:
+	ClipboardHandler ();
+	virtual ~ClipboardHandler ();
+
+	virtual NUIE::Version	GetCurrentVersion () const override;
+	virtual bool			IsCompatibleVersion (const NUIE::Version& version) const override;
+
+	virtual bool			HasClipboardContent () const override;
+	virtual bool			GetClipboardContent (std::vector<char>& content) const override;
+	virtual bool			SetClipboardContent (const std::vector<char>& content) override;
+
+private:
+	UINT	formatId;
+};
+
+}
+
+#endif

Sources/WindowsEmbeddingDemo/main.cpp

@@ -2,6 +2,7 @@
 #include "WAS_BitmapContextGdi.hpp"
 #include "WAS_WindowsAppUtils.hpp"
 #include "WAS_HwndEventHandler.hpp"
+#include "WAS_ClipboardHandler.hpp"
 #include "WAS_NodeEditorHwndControl.hpp"
 #include "WAS_ParameterDialog.hpp"
 
@@ -211,7 +212,7 @@ class MyNodeUIEnvironment : public NUIE::NodeUIEnvironment
 	NE::BasicStringConverter			stringConverter;
 	NUIE::BasicSkinParams				skinParams;
 	WAS::HwndEventHandler				eventHandler;
-	NUIE::MemoryClipboardHandler		clipboardHandler;
+	WAS::ClipboardHandler				clipboardHandler;
 	NE::EvaluationEnv					evaluationEnv;
 	WAS::NodeEditorNodeTreeHwndControl	nodeEditorControl;
 };