the vulkan widget now has a generic function for all its getters. also expanded the error system to use strings, making it better for the vulkan side.

git-svn-id: http://svn2.nishi.boats/svn/milsko/trunk@113 b9cfdab3-6d41-4d17-bbe4-086880011989

src/error.c

@@ -0,0 +1,25 @@
+#include "Mw/Error.h"
+#include "error_internal.h"
+#include <stdio.h>
+#include <string.h>
+
+#define MAX_ERROR_LEN 512
+
+// buffer for holding the error. +1 to ensure there's always a null terminator.
+char error[MAX_ERROR_LEN + 1] = {0};
+
+const char* MwGetLastError() {
+	return error;
+};
+
+void setLastError(const char* fmt, ...) {
+	va_list va;
+	char	out[MAX_ERROR_LEN];
+	memset(out, 0, MAX_ERROR_LEN);
+
+	va_start(va, fmt);
+	vsnprintf(out, MAX_ERROR_LEN, fmt, va);
+	va_end(va);
+
+	memcpy(error, out, MAX_ERROR_LEN);
+}