added Drag into List feature

src/DropTarget.cpp

@@ -0,0 +1,82 @@
+#include "DropTarget.h"
+#include "MultiReplacePanel.h"
+
+DropTarget::DropTarget(HWND hwnd, MultiReplace* parent)
+    : _refCount(1), _hwnd(hwnd), _parent(parent) {}
+
+HRESULT DropTarget::DragEnter(IDataObject* pDataObj, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect) {
+    UNREFERENCED_PARAMETER(pDataObj);
+    UNREFERENCED_PARAMETER(grfKeyState);
+    UNREFERENCED_PARAMETER(pt);
+
+    *pdwEffect = DROPEFFECT_COPY;  // Indicate that only copy operations are allowed
+    return S_OK;
+}
+
+HRESULT DropTarget::DragOver(DWORD grfKeyState, POINTL pt, DWORD* pdwEffect) {
+    UNREFERENCED_PARAMETER(grfKeyState);
+    UNREFERENCED_PARAMETER(pt);
+
+    *pdwEffect = DROPEFFECT_COPY;  // Continue to allow only copy operations
+    return S_OK;
+}
+
+HRESULT DropTarget::DragLeave() {
+    // Handle the drag leave event with minimal overhead
+    return S_OK;
+}
+
+HRESULT DropTarget::Drop(IDataObject* pDataObj, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect) {
+    UNREFERENCED_PARAMETER(grfKeyState);
+    UNREFERENCED_PARAMETER(pt);
+
+    try {
+        STGMEDIUM stgMedium;
+        FORMATETC formatEtc = { CF_HDROP, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
+
+        // Check if the data is in file format
+        if (pDataObj->GetData(&formatEtc, &stgMedium) == S_OK) {
+            HDROP hDrop = static_cast<HDROP>(GlobalLock(stgMedium.hGlobal));
+            if (hDrop) {
+                UINT numFiles = DragQueryFile(hDrop, 0xFFFFFFFF, NULL, 0);
+                if (numFiles > 0) {
+                    wchar_t filePath[MAX_PATH];
+                    DragQueryFile(hDrop, 0, filePath, MAX_PATH);
+                    _parent->loadListFromCsv(filePath);  // Load CSV file
+                }
+                GlobalUnlock(stgMedium.hGlobal); // Unlock the global memory object
+            }
+            ReleaseStgMedium(&stgMedium); // Release the storage medium
+        }
+
+        *pdwEffect = DROPEFFECT_COPY; // Indicate that the operation was a copy
+        return S_OK;
+    }
+    catch (...) {
+        // Handle errors silently
+        *pdwEffect = DROPEFFECT_NONE;
+        return E_FAIL;
+    }
+}
+
+HRESULT DropTarget::QueryInterface(REFIID riid, void** ppvObject) {
+    if (riid == IID_IUnknown || riid == IID_IDropTarget) {
+        *ppvObject = this;
+        AddRef();
+        return S_OK;
+    }
+    *ppvObject = nullptr;
+    return E_NOINTERFACE;
+}
+
+ULONG DropTarget::AddRef() {
+    return InterlockedIncrement(&_refCount);
+}
+
+ULONG DropTarget::Release() {
+    ULONG count = InterlockedDecrement(&_refCount);
+    if (count == 0) {
+        delete this;
+    }
+    return count;
+}

src/DropTarget.h

@@ -0,0 +1,31 @@
+#ifndef DROP_TARGET_H
+#define DROP_TARGET_H
+
+#include <Windows.h>
+#include <shlobj.h>  // Include for IDropTarget and other shell functions
+
+class MultiReplace;  // Forward declaration to avoid circular dependency
+
+class DropTarget : public IDropTarget {
+public:
+    DropTarget(HWND hwnd, MultiReplace* parent);
+    virtual ~DropTarget() {}
+
+    // Implement all IDropTarget methods
+    HRESULT STDMETHODCALLTYPE DragEnter(IDataObject* pDataObj, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect) override;
+    HRESULT STDMETHODCALLTYPE DragOver(DWORD grfKeyState, POINTL pt, DWORD* pdwEffect) override;
+    HRESULT STDMETHODCALLTYPE DragLeave() override;
+    HRESULT STDMETHODCALLTYPE Drop(IDataObject* pDataObj, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect) override;
+
+    // IUnknown methods
+    HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void** ppvObject) override;
+    ULONG STDMETHODCALLTYPE AddRef() override;
+    ULONG STDMETHODCALLTYPE Release() override;
+
+private:
+    LONG _refCount;
+    HWND _hwnd;
+    MultiReplace* _parent;
+};
+
+#endif // DROP_TARGET_H

src/MultiReplacePanel.cpp

@@ -307,6 +307,18 @@ void MultiReplace::initializeListView() {
     ListView_SetExtendedListViewStyle(_replaceListView, LVS_EX_FULLROWSELECT | LVS_EX_SUBITEMIMAGES);
 }
 
+void MultiReplace::initializeDragAndDrop() {
+    dropTarget = new DropTarget(_replaceListView, this);  // Create an instance of DropTarget
+    HRESULT hr = ::RegisterDragDrop(_replaceListView, dropTarget);  // Register the ListView as a drop target
+
+    if (FAILED(hr)) {
+        // Safely release the DropTarget instance to avoid memory leaks
+        delete dropTarget;
+        dropTarget = nullptr;  // Set to nullptr to prevent any unintended usage
+    }
+}
+
+
 void MultiReplace::moveAndResizeControls() {
     // IDs of controls to be moved or resized
     const int controlIds[] = {
@@ -1658,6 +1670,7 @@ INT_PTR CALLBACK MultiReplace::run_dlgProc(UINT message, WPARAM wParam, LPARAM l
         initializePluginStyle();
         initializeCtrlMap();
         initializeListView();
+        initializeDragAndDrop();
         loadSettings();
         updateButtonVisibilityBasedOnMode();
 		updateStatisticsColumnButtonIcon();
@@ -1709,15 +1722,45 @@ INT_PTR CALLBACK MultiReplace::run_dlgProc(UINT message, WPARAM wParam, LPARAM l
         if (_replaceListView && originalListViewProc) {
             SetWindowLongPtr(_replaceListView, GWLP_WNDPROC, (LONG_PTR)originalListViewProc);
         }
-        saveSettings();
+
+        saveSettings(); // Save any settings before destroying
+
+        // Unregister Drag-and-Drop
+        if (dropTarget) {
+            RevokeDragDrop(_replaceListView);
+            delete dropTarget;
+            dropTarget = nullptr;
+        }
+
         if (hwndEdit) {
             DestroyWindow(hwndEdit);
         }
+
         DeleteObject(_hFont);
-        DestroyWindow(_hSelf);
+
+        // Close the debug window if open
+        if (hDebugWnd != NULL) {
+            RECT rect;
+            if (GetWindowRect(hDebugWnd, &rect)) {
+                debugWindowPosition.x = rect.left;
+                debugWindowPosition.y = rect.top;
+                debugWindowPositionSet = true;
+                debugWindowSize.cx = rect.right - rect.left;
+                debugWindowSize.cy = rect.bottom - rect.top;
+                debugWindowSizeSet = true;
+            }
+            PostMessage(hDebugWnd, WM_CLOSE, 0, 0);
+            hDebugWnd = NULL; // Reset the handle after closing
+        }
+
+        DestroyWindow(_hSelf); // Destroy the main window
+
+        // Post a quit message to ensure the application terminates cleanly
+        PostQuitMessage(0);
     }
     break;
 
+
     case WM_SIZE:
     {
         if (isWindowOpen) {           

src/MultiReplacePanel.h

@@ -19,6 +19,7 @@
 #include "StaticDialog/StaticDialog.h"
 #include "StaticDialog/resource.h"
 #include "PluginInterface.h"
+#include "DropTarget.h"
 
 #include <string>
 #include <vector>
@@ -299,6 +300,10 @@ class MultiReplace : public StaticDialog
 
     static std::vector<LogEntry> logChanges;
 
+    // Drag-and-Drop functionality
+    DropTarget* dropTarget;  // Pointer to DropTarget instance
+    void loadListFromCsv(const std::wstring& filePath); // used in DropTarget.cpp
+    void initializeDragAndDrop();
 
 protected:
     virtual INT_PTR CALLBACK run_dlgProc(UINT message, WPARAM wParam, LPARAM lParam) override;
@@ -551,7 +556,6 @@ class MultiReplace : public StaticDialog
     bool saveListToCsvSilent(const std::wstring& filePath, const std::vector<ReplaceItemData>& list);
     void saveListToCsv(const std::wstring& filePath, const std::vector<ReplaceItemData>& list);
     void loadListFromCsvSilent(const std::wstring& filePath, std::vector<ReplaceItemData>& list);
-    void loadListFromCsv(const std::wstring& filePath);
     std::wstring escapeCsvValue(const std::wstring& value);
     std::wstring unescapeCsvValue(const std::wstring& value);
 

vs.proj/MultiReplace.vcxproj

@@ -28,6 +28,7 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\src\AboutDialog.h" />
+    <ClInclude Include="..\src\DropTarget.h" />
     <ClInclude Include="..\src\lua\lapi.h" />
     <ClInclude Include="..\src\lua\lauxlib.h" />
     <ClInclude Include="..\src\lua\lcode.h" />
@@ -63,6 +64,7 @@
     <ClInclude Include="..\src\StaticDialog\StaticDialog.h" />
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="..\src\DropTarget.cpp" />
     <ClCompile Include="..\src\language_mapping.cpp" />
     <ClCompile Include="..\src\lua\lapi.c">
       <AdditionalOptions>/w %(AdditionalOptions)</AdditionalOptions>

vs.proj/MultiReplace.vcxproj.filters

@@ -109,6 +109,7 @@
     </ClCompile>
     <ClCompile Include="..\src\StaticDialog\StaticDialog.cpp" />
     <ClCompile Include="..\src\language_mapping.cpp" />
+    <ClCompile Include="..\src\DropTarget.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\src\AboutDialog.h" />
@@ -201,6 +202,7 @@
     </ClInclude>
     <ClInclude Include="..\src\StaticDialog\resource.h" />
     <ClInclude Include="..\src\StaticDialog\StaticDialog.h" />
+    <ClInclude Include="..\src\DropTarget.h" />
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="..\src\MultiReplace.rc" />