Merge commit '6e9eb898f5c6e241591d4953ae0b36668cd59f94' as 'external/nfd'

external/nfd/test/test_opendialog_cpp.cpp

@@ -0,0 +1,29 @@
+#include <iostream>
+#include "nfd.hpp"
+
+/* this test should compile on all supported platforms */
+/* this demonstrates the thin C++ wrapper */
+
+int main() {
+    // initialize NFD
+    NFD::Guard nfdGuard;
+
+    // auto-freeing memory
+    NFD::UniquePath outPath;
+
+    // prepare filters for the dialog
+    nfdfilteritem_t filterItem[2] = {{"Source code", "c,cpp,cc"}, {"Headers", "h,hpp"}};
+
+    // show the dialog
+    nfdresult_t result = NFD::OpenDialog(outPath, filterItem, 2);
+    if (result == NFD_OKAY) {
+        std::cout << "Success!" << std::endl << outPath.get() << std::endl;
+    } else if (result == NFD_CANCEL) {
+        std::cout << "User pressed cancel." << std::endl;
+    } else {
+        std::cout << "Error: " << NFD::GetError() << std::endl;
+    }
+
+    // NFD::Guard will automatically quit NFD.
+    return 0;
+}