Added support for the TEXT command to the C client.

C/src/xplaneConnect.c

@@ -419,6 +419,20 @@ short sendpCTRL(struct xpcSocket recfd, short numArgs, float valueArray[], char
     return 0;
 }
 
+short sendTEXT(struct xpcSocket sendfd, char* msg, int x, int y)
+{
+	char buf[269] = { 0 };
+	size_t msgLen = strnlen(msg, 255);
+	size_t len = 14 + msgLen;
+	strcpy(buf, "TEXT");
+	memcpy(buf + 5, &x, sizeof(int));
+	memcpy(buf + 9, &y, sizeof(int));
+	buf[13] = msgLen;
+	strncpy(buf + 14, msg, msgLen);
+
+	sendUDP(sendfd, buf, len);
+}
+
 //READ
 //----------------------------------------
 short readUDP(struct xpcSocket recfd, char *dataRef, struct sockaddr *recvaddr)

C/src/xplaneConnect.h

@@ -83,6 +83,10 @@
         short parseRequest(const char my_message[], float *resultArray[], short arraySizes[]);
 		short readRequest(struct xpcSocket recfd, float *dataRef[], short arraySizes[], struct sockaddr *recvaddr);
 
+	// Screen Text
+		short sendTEXT(struct xpcSocket sendfd, int x, int y, char* msg);
+
+        
     #endif //ifdef _h
         
 #ifdef __cplusplus

TestScripts/C Tests/main.c

@@ -84,6 +84,25 @@ short sendReadTest() // send/read Test
     return 0;
 }
 
+short sendTEXTTest()
+{
+	printf("sendTEXT - ");
+
+	// Setup
+	struct xpcSocket sendPort = openUDP(49064, "127.0.0.1", 49009);
+	int x = 100;
+	int y = 700;
+	char* msg = "XPlaneConnect test message. Now with 100% fewer new lines!";
+
+	// Test
+	sendTEXT(sendPort, msg, x, y);
+	// NOTE: Manually verify that msg appears on the screen in X-Plane!
+
+	// Cleanup
+	closeUDP(sendPort);
+	return 0;
+}
+
 short requestDREFTest() // Request DREF Test (Required for next tests)
 {
     printf("requestDREF - ");
@@ -543,6 +562,7 @@ int main(int argc, const char * argv[])
     runTest(openTest);
     runTest(closeTest);
 	runTest(sendReadTest);
+	runTest(sendTEXTTest);
     runTest(requestDREFTest);
     runTest(sendDREFTest);
 	runTest(sendDATATest);