1 files changed, 20 insertions, 0 deletions
diff --git a/windows/utils/getdlgitemtext_alloc.c b/windows/utils/getdlgitemtext_alloc.c
new file mode 100644
index 00000000..f0244d71
--- /dev/null
+++ b/windows/utils/getdlgitemtext_alloc.c
@@ -0,0 +1,20 @@
+/*
+ * Handy wrapper around GetDlgItemText which doesn't make you invent
+ * an arbitrary length limit on the output string. Returned string is
+ * dynamically allocated; caller must free.
+ */
+
+#include "putty.h"
+
+char *GetDlgItemText_alloc(HWND hwnd, int id)
+{
+    char *ret = NULL;
+    size_t size = 0;
+
+    do {
+        sgrowarray_nm(ret, size, size);
+        GetDlgItemText(hwnd, id, ret, size);
+    } while (!memchr(ret, '\0', size-1));
+
+    return ret;
+}