Add new “Modal form” opcode.

Signed-off-by: ydong10
Reviewed-by: lgao4


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11766 6f19259b-4bc3-4df7-8a09-765794883524

BaseTools/Source/C/VfrCompile/VfrFormPkg.h

@@ -809,6 +809,16 @@ public:
   }
 };
 
+class CIfrModal : public CIfrObj, public CIfrOpHeader {
+private:
+  EFI_IFR_MODAL *mModal;
+
+public:
+  CIfrModal () : CIfrObj (EFI_IFR_MODAL_TAG_OP, (CHAR8 **)&mModal),
+                 CIfrOpHeader (EFI_IFR_MODAL_TAG_OP, &mModal->Header) {
+  }
+};
+
 class CIfrLocked : public CIfrObj, public CIfrOpHeader {
 private:
   EFI_IFR_LOCKED *mLocked;