add resize to fit window menu option

Author: Marc-André Moreau

dll/ApiHooks.cpp

@@ -506,7 +506,8 @@ BOOL Hook_StretchBlt(
 #define SYSMENU_RDP_RANGE_FIRST_ID               7100
 #define SYSMENU_RDP_SEND_CTRL_ALT_DEL_ID         7101
 #define SYSMENU_RDP_SEND_CTRL_ALT_END_ID         7102
-#define SYSMENU_RDP_RANGE_LAST_ID                7103
+#define SYSMENU_RDP_RESIZE_TO_FIT_WINDOW_ID      7103
+#define SYSMENU_RDP_RANGE_LAST_ID                7104
 
 static WNDPROC Real_TscShellContainerWndProc = NULL;
 
@@ -766,6 +767,8 @@ LRESULT CALLBACK Hook_IHWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPar
                         HMENU hExtraMenu = CreateMenu();
                         AppendMenu(hExtraMenu, MF_STRING, SYSMENU_RDP_SEND_CTRL_ALT_DEL_ID, L"Send Ctrl+Alt+Del");
                         AppendMenu(hExtraMenu, MF_STRING, SYSMENU_RDP_SEND_CTRL_ALT_END_ID, L"Send Ctrl+Alt+End");
+                        AppendMenu(hExtraMenu, MF_SEPARATOR, 0, NULL);
+                        AppendMenu(hExtraMenu, MF_STRING, SYSMENU_RDP_RESIZE_TO_FIT_WINDOW_ID, L"Resize to fit window");
 
                         AppendMenu(hSystemMenu, MF_SEPARATOR, 0, NULL);
                         AppendMenu(hSystemMenu, MF_POPUP, (::UINT_PTR)hExtraMenu, L"Extra");
@@ -805,6 +808,52 @@ LRESULT CALLBACK Hook_IHWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPar
                 SendMessage(hWnd, WM_KEYUP, (WPARAM)VK_MENU, (LPARAM)0x0);
                 SendMessage(hWnd, WM_KEYUP, (WPARAM)VK_CONTROL, (LPARAM)0x0);
                 break;
+
+            case SYSMENU_RDP_RESIZE_TO_FIT_WINDOW_ID:
+                MsRdpEx_LogPrint(DEBUG, "Resize to fit window");
+                {
+                    IUnknown* pUnknown = NULL;
+                    IMsRdpClient9* pMsRdpClient9 = NULL;
+
+                    if (instance)
+                        instance->GetRdpClient((LPVOID*)&pUnknown);
+
+                    if (pUnknown)
+                        pUnknown->QueryInterface(IID_IMsRdpClient9, (LPVOID*)&pMsRdpClient9);
+
+                    HWND hUIContainerWnd = GetParent(hWnd);
+                    HWND hUIMainWnd = GetParent(hUIContainerWnd);
+
+                    if (pMsRdpClient9 && hUIMainWnd)
+                    {
+                        RECT clientRect;
+                        GetClientRect(hUIMainWnd, &clientRect);
+
+                        ULONG ulDesktopWidth = clientRect.right - clientRect.left;
+                        ULONG ulDesktopHeight = clientRect.bottom - clientRect.top;
+                        ULONG ulPhysicalWidth = ulDesktopWidth;
+                        ULONG ulPhysicalHeight = ulDesktopHeight;
+                        ULONG ulOrientation = 0;
+                        ULONG ulDesktopScaleFactor = 100;
+                        ULONG ulDeviceScaleFactor = 100;
+
+                        MsRdpEx_LogPrint(DEBUG, "UpdateSessionDisplaySettings(%dx%d)",
+                            ulDesktopWidth, ulDesktopHeight);
+
+                        pMsRdpClient9->UpdateSessionDisplaySettings(
+                            ulDesktopWidth,
+                            ulDesktopHeight,
+                            ulPhysicalWidth,
+                            ulPhysicalHeight,
+                            ulOrientation,
+                            ulDesktopScaleFactor,
+                            ulDeviceScaleFactor);
+                    }
+
+                    if (pMsRdpClient9)
+                        pMsRdpClient9->Release();
+                }
+                break;
         }
     }
     else if (uMsg == WM_TIMER)