Added function WTSErrorToString to get a string from an error code.

winpr/include/winpr/wtsapi.h

@@ -1357,6 +1357,7 @@ extern "C" {
 #endif
 
 WINPR_API BOOL WTSRegisterWtsApiFunctionTable(PWtsApiFunctionTable table);
+WINPR_API const CHAR* WTSErrorToString(UINT error);
 
 #ifdef __cplusplus
 }

winpr/libwinpr/wtsapi/wtsapi.c

@@ -555,6 +555,78 @@ DWORD WINAPI WTSGetActiveConsoleSessionId(void)
 
 #endif
 
+const CHAR* WTSErrorToString(UINT error)
+{
+	switch(error)
+	{
+	case CHANNEL_RC_OK:
+		return "CHANNEL_RC_OK";
+
+	case CHANNEL_RC_ALREADY_INITIALIZED:
+		return "CHANNEL_RC_ALREADY_INITIALIZED";
+
+	case CHANNEL_RC_NOT_INITIALIZED:
+		return "CHANNEL_RC_NOT_INITIALIZED";
+
+	case CHANNEL_RC_ALREADY_CONNECTED:
+		return "CHANNEL_RC_ALREADY_CONNECTED";
+
+	case CHANNEL_RC_NOT_CONNECTED:
+		return "CHANNEL_RC_NOT_CONNECTED";
+
+	case CHANNEL_RC_TOO_MANY_CHANNELS:
+		return "CHANNEL_RC_TOO_MANY_CHANNELS";
+
+	case CHANNEL_RC_BAD_CHANNEL:
+		return "CHANNEL_RC_BAD_CHANNEL";
+
+	case CHANNEL_RC_BAD_CHANNEL_HANDLE:
+		return "CHANNEL_RC_BAD_CHANNEL_HANDLE";
+
+	case CHANNEL_RC_NO_BUFFER:
+		return "CHANNEL_RC_NO_BUFFER";
+
+	case CHANNEL_RC_BAD_INIT_HANDLE:
+		return "CHANNEL_RC_BAD_INIT_HANDLE";
+
+	case CHANNEL_RC_NOT_OPEN:
+		return "CHANNEL_RC_NOT_OPEN";
+
+	case CHANNEL_RC_BAD_PROC:
+		return "CHANNEL_RC_BAD_PROC";
+
+	case CHANNEL_RC_NO_MEMORY:
+		return "CHANNEL_RC_NO_MEMORY";
+
+	case CHANNEL_RC_UNKNOWN_CHANNEL_NAME:
+		return "CHANNEL_RC_UNKNOWN_CHANNEL_NAME";
+
+	case CHANNEL_RC_ALREADY_OPEN:
+		return "CHANNEL_RC_ALREADY_OPEN";
+
+	case CHANNEL_RC_NOT_IN_VIRTUALCHANNELENTRY:
+		return "CHANNEL_RC_NOT_IN_VIRTUALCHANNELENTRY";
+
+	case CHANNEL_RC_NULL_DATA:
+		return "CHANNEL_RC_NULL_DATA";
+
+	case CHANNEL_RC_ZERO_LENGTH:
+		return "CHANNEL_RC_ZERO_LENGTH";
+
+	case CHANNEL_RC_INVALID_INSTANCE:
+		return "CHANNEL_RC_INVALID_INSTANCE";
+
+	case CHANNEL_RC_UNSUPPORTED_VERSION:
+		return "CHANNEL_RC_UNSUPPORTED_VERSION";
+
+	case CHANNEL_RC_INITIALIZATION_ERROR:
+		return "CHANNEL_RC_INITIALIZATION_ERROR";
+
+	default:
+		return "UNKNOWN";
+	}
+}
+
 BOOL WTSRegisterWtsApiFunctionTable(PWtsApiFunctionTable table)
 {
 	g_WtsApi = table;