Squashed 'deps/nfde/' content from commit 28ade5a5c

git-subtree-dir: deps/nfde
git-subtree-split: 28ade5a5cc5d17cea8fe4034572cac8fd54eb53f

test/test_pickfolder_cpp.cpp

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+#include "nfd.hpp"
+
+#include <iostream>
+
+/* 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;
+
+    // show the dialog
+    nfdresult_t result = NFD::PickFolder(outPath);
+    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;
+}