Hi Jannis, The ESC is a scan code predefined in the DisplayEngineDxe driver, display engine use these keys to make itself workable. Details about scan code see below: SCAN_CODE_TO_SCREEN_OPERATION gScanCodeToOperation[] = { { SCAN_UP, // arrow up operation UiUp, }, { SCAN_DOWN, // arrow down operation UiDown, }, { SCAN_PAGE_UP, // page up operation UiPageUp, }, { SCAN_PAGE_DOWN, // page down operation UiPageDown, }, { SCAN_ESC, // exit operation. UiReset, }, { SCAN_LEFT, // arrow left operation. UiLeft, }, { SCAN_RIGHT, // arrow right operation. UiRight, } };
These keys are not supported customize by user. Thanks, Eric -----Original Message----- From: edk2-devel [mailto:edk2-devel-boun...@lists.01.org] On Behalf Of Jannis Ötjengerdes Sent: Friday, March 17, 2017 2:20 AM To: edk2-devel@lists.01.org Subject: [edk2] override hotkey esc in HII form Hello there, I'm trying to develop an HII form where which cannot be left by the user with the hotkey "esc" (escape). What I've tried: HotKey.ScanCode = SCAN_ESC; FormBrowserEx2->RegisterHotKey(&HotKey, 0, 0, NULL); I tried to override the HotKey with null, so that no action is applied, but still, the form is closed if I press the esc key. Although I tried to register an exit handler in the FormBrowserEx2, but this function is not even called (I put a endless while loop in it to test it) Lastly I tried to do something in the EFI_BROWSER_ACTION_FORM_CLOSE action, but all I can do there is to return a value, I tried all EFI_STATUS values, none of these aborts the cancel request of the form. I would appreciate it, if someone could give me a hint how do it. Thank you! Jannis _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel