1 files changed, 69 insertions, 0 deletions
diff --git a/UefiLessonsPkg/DisplayHIIByGuid/DisplayHIIByGuid.c b/UefiLessonsPkg/DisplayHIIByGuid/DisplayHIIByGuid.c
new file mode 100644
index 0000000..87e7efe
--- /dev/null
+++ b/UefiLessonsPkg/DisplayHIIByGuid/DisplayHIIByGuid.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2021, Konstantin Aladyshev <aladyshev22@gmail.com>
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+
+#include <Library/MemoryAllocationLib.h>
+#include <Library/HiiLib.h>
+#include <Protocol/FormBrowser2.h>
+
+INTN
+EFIAPI
+ShellAppMain (
+  IN UINTN Argc,
+  IN CHAR16 **Argv
+  )
+{
+  if (Argc != 2) {
+    Print(L"Usage:\n");
+    Print(L"  DisplayHIIByGuid <GUID>\n");
+    return EFI_INVALID_PARAMETER;
+  }
+
+  GUID Guid;
+  EFI_STATUS Status = StrToGuid(Argv[1], &Guid);
+  if (Status != RETURN_SUCCESS) {
+    Print(L"Error! Can't convert input argument to GUID\n");
+    return EFI_INVALID_PARAMETER;
+  }
+
+
+  EFI_HII_HANDLE* HiiHandles = HiiGetHiiHandles(&Guid);
+
+  EFI_HII_HANDLE* HiiHandle = HiiHandles;
+  UINTN HandleCount=0;
+  while (*HiiHandle != NULL) {
+    HiiHandle++;
+    HandleCount++;
+  }
+
+  EFI_FORM_BROWSER2_PROTOCOL* FormBrowser2;
+  Status = gBS->LocateProtocol(&gEfiFormBrowser2ProtocolGuid, NULL, (VOID**)&FormBrowser2);
+  if (EFI_ERROR(Status)) {
+    Print(L"Error! Can't locate gEfiFormBrowser2Protocol\n");
+    FreePool(HiiHandles);
+    return Status;
+  }
+
+  Status = FormBrowser2->SendForm (
+                           FormBrowser2,
+                           HiiHandles,
+                           HandleCount,
+                           NULL,
+                           0,
+                           NULL,
+                           NULL
+                           );  
+
+  if (EFI_ERROR(Status)) {
+    Print(L"Error! SendForm returned %r\n", Status);
+  }
+
+  FreePool(HiiHandles);
+
+  return EFI_SUCCESS;
+}