Message Box

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  • Message Box

    Hi

    I want to create a message box that closes automatically after a preset time.

    I have used MESSAGEBOX_Create to create a message box and return a handle which I use to assign it a callback.
    I then created a timer to send the message box a timer msg.

    In the callback, on a WM_TIMER msg I call GUI_EndDialog(pMsg->hWin, 0);

    While this closes the message box, the GUI hangs after this.

    I have tried making the message box non modal, closing it by sending it a button msg, but the GUI still hangs after this.

    Suggestions welcome?
    Thanks
    Lawrence

  • Hi,

    try the following:

    C Source Code

    1. #include "GUI.h"
    2. #include "MESSAGEBOX.h"
    4. static void _cbWin(WM_MESSAGE * pMsg) {
    5. WM_HWIN hWin, hBox;
    6. WM_HTIMER hTimer;
    7. switch (pMsg->MsgId) {
    8. case WM_TIMER:
    9. /*
    10. * Delete timer, dummy window and message box
    11. */
    12. hTimer = (WM_HTIMER)pMsg->Data.v;
    13. hWin = pMsg->hWin;
    14. WM_GetUserData(hWin, &hBox, sizeof(hBox));
    15. WM_DeleteTimer(hTimer);
    16. WM_DeleteWindow(hBox);
    17. WM_DeleteWindow(hWin);
    18. break;
    19. }
    20. }
    22. void MainTask(void) {
    23. WM_HWIN hWin, hBox;
    24. GUI_Init();
    25. /*
    26. * Make sure desktop will be redrawn
    27. */
    28. WM_SetDesktopColor(GUI_BLACK);
    29. /*
    30. * Create destination window (dummy) for timer message
    31. * with additional user data for message box handle
    32. */
    33. hWin = WM_CreateWindow(0, 0, 0, 0, 0, _cbWin, sizeof(hBox));
    34. /*
    35. * Create modal message box
    36. */
    37. hBox = MESSAGEBOX_Create("Closes in a\n"
    38. "few seconds...",
    39. "Message", GUI_MESSAGEBOX_CF_MODAL);
    40. /*
    41. * Store message box handle in user data
    42. */
    43. WM_SetUserData(hWin, &hBox, sizeof(hBox));
    44. /*
    45. * Create timer
    46. */
    47. WM_CreateTimer(hWin, 0, 2000, 0);
    48. while (1) {
    49. GUI_Delay(100);
    50. }
    51. }
    Display All


    Regards
    DJJ