Draw a line above a text

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    • Draw a line above a text

      Hello.

      I need to draw a line above a text.

      The text is created using a dialog box

      Whne I try to draw the line in WM_PAINT message, the line is drawn bellow the text.

      Note that the text has a background collor.




      Here is the example code:


      Source Code

      1. #define ID_WINDOW_0 (GUI_ID_USER + 0x00)
      2. #define ID_TEXT_0 (GUI_ID_USER + 0x02)
      5. // USER START (Optionally insert additional defines)
      6. // USER END
      8. /*********************************************************************
      9. *
      10. * Static data
      11. *
      12. **********************************************************************
      13. */
      15. // USER START (Optionally insert additional static data)
      16. // USER END
      18. /*********************************************************************
      19. *
      20. * _aDialogCreate
      21. */
      22. static const GUI_WIDGET_CREATE_INFO _aDialogCreate[] = {
      23. { WINDOW_CreateIndirect, "Window", ID_WINDOW_0, 0, 0, 320, 240, 0, 0x0, 0 },
      24. { TEXT_CreateIndirect, "Text", ID_TEXT_0, 50, 130, 320, 82, 0, 0x0, 0 },
      25. // USER START (Optionally insert additional widgets)
      26. // USER END
      27. };
      29. /*********************************************************************
      30. *
      31. * Static code
      32. *
      33. **********************************************************************
      34. */
      36. // USER START (Optionally insert additional static code)
      37. // USER END
      39. /*********************************************************************
      40. *
      41. * _cbDialog
      42. */
      43. static void _cbDialog(WM_MESSAGE * pMsg) {
      44. // USER START (Optionally insert additional variables)
      45. // USER END
      46. WM_HWIN hItem;
      48. switch (pMsg->MsgId) {
      49. // USER START (Optionally insert additional message handling)
      50. // USER END
      51. case WM_INIT_DIALOG:
      52. hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_0);
      53. TEXT_SetText(hItem, "Text");
      54. TEXT_SetBkColor(hItem, GUI_YELLOW);
      55. case WM_PAINT :
      56. GUI_SetColor(GUI_BLACK);
      57. GUI_SetPenSize(1);
      58. GUI_DrawLine(0, 0, 320, 240);
      59. break;
      61. default:
      62. WM_DefaultProc(pMsg);
      63. break;
      64. }
      65. }
      71. WM_HWIN CreateWindow22(void)
      72. {
      73. WM_HWIN hWin;
      75. hWin = GUI_CreateDialogBox(_aDialogCreate, GUI_COUNTOF(_aDialogCreate), _cbDialog, WM_HBKWIN, 0, 0);
      76. return hWin;
      77. }
      79. void MainTask(void) {
      80. GUI_Init();
      81. CreateWindow22();
      82. while (1)
      83. {
      84. GUI_Exec();
      86. }
      89. }
      Display All

      The result is :
      Images

      • image.png

        16.17 kB, 428×708, viewed 294 times

    • Hi,

      you can simply create another window over the existing one to draw over the rest.

      Try this:

      C Source Code

      1. #include "DIALOG.h"
      4. #define ID_WINDOW_0 (GUI_ID_USER + 0x00)
      5. #define ID_TEXT_0 (GUI_ID_USER + 0x02)
      6. // USER START (Optionally insert additional defines)
      7. // USER END
      8. /*********************************************************************
      9. *
      10. * Static data
      11. *
      12. **********************************************************************
      13. */
      14. // USER START (Optionally insert additional static data)
      15. // USER END
      16. /*********************************************************************
      17. *
      18. * _aDialogCreate
      19. */
      20. static const GUI_WIDGET_CREATE_INFO _aDialogCreate[] = {
      21. { WINDOW_CreateIndirect, "Window", ID_WINDOW_0, 0, 0, 320, 240, 0, 0x0, 0 },
      22. { TEXT_CreateIndirect, "Text", ID_TEXT_0, 50, 130, 320, 82, 0, 0x0, 0 },
      23. // USER START (Optionally insert additional widgets)
      24. // USER END
      25. };
      26. /*********************************************************************
      27. *
      28. * Static code
      29. *
      30. **********************************************************************
      31. */
      32. // USER START (Optionally insert additional static code)
      33. // USER END
      35. static void _cbDrawingWindow(WM_MESSAGE * pMsg) {
      36. switch (pMsg->MsgId) {
      37. case WM_PAINT:
      38. GUI_SetColor(GUI_BLACK);
      39. GUI_SetPenSize(1);
      40. GUI_DrawLine(0, 0, 320, 240);
      41. break;
      42. default:
      43. WM_DefaultProc(pMsg);
      44. break;
      45. }
      46. }
      48. /*********************************************************************
      49. *
      50. * _cbDialog
      51. */
      52. static void _cbDialog(WM_MESSAGE * pMsg) {
      53. // USER START (Optionally insert additional variables)
      54. int xSize;
      55. int ySize;
      56. // USER END
      57. WM_HWIN hItem;
      58. switch (pMsg->MsgId) {
      59. // USER START (Optionally insert additional message handling)
      60. // USER END
      61. case WM_INIT_DIALOG:
      62. hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_0);
      63. TEXT_SetText(hItem, "Text");
      64. TEXT_SetBkColor(hItem, GUI_YELLOW);
      65. xSize = WM_GetWindowSizeX(pMsg->hWin);
      66. ySize = WM_GetWindowSizeY(pMsg->hWin);
      67. WM_CreateWindowAsChild(0, 0, xSize, ySize, pMsg->hWin, WM_CF_SHOW | WM_CF_HASTRANS, _cbDrawingWindow, 0);
      68. //case WM_PAINT :
      69. // GUI_SetColor(GUI_BLACK);
      70. // GUI_SetPenSize(1);
      71. // GUI_DrawLine(0, 0, 320, 240);
      72. // break;
      73. default:
      74. WM_DefaultProc(pMsg);
      75. break;
      76. }
      77. }
      78. WM_HWIN CreateWindow22(void)
      79. {
      80. WM_HWIN hWin;
      81. hWin = GUI_CreateDialogBox(_aDialogCreate, GUI_COUNTOF(_aDialogCreate), _cbDialog, WM_HBKWIN, 0, 0);
      82. return hWin;
      83. }
      84. void MainTask(void) {
      85. GUI_Init();
      86. CreateWindow22();
      87. while (1)
      88. {
      89. GUI_Exec();
      90. }
      91. }
      93. /*************************** End of file ****************************/
      Display All
      Please note that any underlaying windows/widget will no longer receive touch input with the window in the foreground.

      Regards,
      Sven
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