I use SendMessage() all the time in controlling an external video application and I'm on Windows 7 Enterprise 64Bit so I can't initially see what is going wrong for you.
it could be to do with permissions as VFP has the same problem with drag and drop. You can't run VFP as "administrator" and drag and drop onto your application from a non "administrator" loaded application. Have you checked out running the application in purely runtime mode, where both VFP and Notepad are run as a standard user? I'd love to know how to load an external application using the WinAPI but as an administrator as opposed to a standard user which it defaults to but that is another thread... Dave -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Man-wai Chang Sent: 07 March 2012 13:09 To: ProFox Email List Subject: win32api SendMessage() I would like to use SendMessage() to send keystrokes to another window #define WM_KEYDOWN 0x0100 #define WM_KEYUP 0x0101 DECLARE INTEGER SendMessage IN user32; INTEGER hWnd,; INTEGER Msg,; INTEGER wParam,; INTEGER lParam DECLARE SHORT VkKeyScan IN user32; INTEGER ch m.xx=VkKeyScan(asc("A")) SendMessage( ln_current_window, WM_KEYDOWN, m.xx, 0) SendMessage( ln_current_window, WM_KEYUP, m.xx, 0) It didn't work. Tried it on Notepad as well as Command Prompt. What's wrong with my codes? -- .~. Might, Courage, Vision. SINCERITY! / v \ 64-bit Ubuntu 9.10 (Linux kernel 2.6.39.3) /( _ )\ http://sites.google.com/site/changmw ^ ^ May the Force and farces be with you! [excessive quoting removed by server] _______________________________________________ Post Messages to: [email protected] Subscription Maintenance: http://leafe.com/mailman/listinfo/profox OT-free version of this list: http://leafe.com/mailman/listinfo/profoxtech Searchable Archive: http://leafe.com/archives/search/profox This message: http://leafe.com/archives/byMID/profox/[email protected] ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.
