eGUI: main screen is not rewritten after return from activated screen

[robroz]

Hi,

I must be missing something obvious. I'm coding and trying to use simple window, that will display message and have OK button on it.

I call this child windows with :

D4D_ActivateScreen(&screen_msg, D4D_FALSE);

and then call this from child screen when OK button is pressed :

D4D_EscapeScreen();

Child window shows up - works ok, but when I click on OK button, main screen doesn't redraw properly so screen looks like freezed and doesn't change at all...

If I add title bar and click on close icon it works ok, and main screen show up...

I must be doing wrong something obvious and I can't see it. I'm attaching code of child window below.

Thanks  in advance,

regards,

Bul.

/*!
* \file    screen_text.c
*
* This file simply displays a message
*
*/

#include "lcd.h"
#include "d13_common.h"
#include "D13_GUI_Skin.h"

D4D_EXTERN_SCREEN(screen_main);

D4D_CLR_SCHEME ScreenColorSchemeMsg;

D4D_CHAR  str_message[50]=" ";

// Button object "Ok"
#define SCR_MSG_BTN_SIZEX       BTN_SIZEX
#define SCR_MSG_BTN_SIZEY       BTN_SIZEY

#define SCR_MSG_BTN_POSX        130
#define SCR_MSG_BTN_POSY        180

/*****************************************************************************
*
* Graphic objects callback/events functions declaration
*
*
*****************************************************************************/

//Button Ok OnClick CallBack
static void Screenmsg_OnClickBtnOk(D4D_OBJECT* pThis);

/*****************************************************************************
*
* Graphic object declarations
*
*
*****************************************************************************/
/* Declaration of label */
D4D_DECLARE_STD_LABEL(Screenmsg_lbl_Message_txt, str_message, 160, 110, 50, 50, FONT_ARIAL16_BOLD)

/* Declaration of button */
//D4D_DECLARE_TXT_RBUTTON(Screenmsg_btn_Ok, "Ok", SCR_MSG_BTN_POSX, SCR_MSG_BTN_POSY, SCR_MSG_BTN_SIZEX, SCR_MSG_BTN_SIZEY, BTN_RADIUS, FONT_BERLIN_SANS_FBDEMI12, Screenmsg_OnClickBtnOk)
D4D_DECLARE_RBUTTON(Screenmsg_btn_Ok, "Ok", SCR_MSG_BTN_POSX, SCR_MSG_BTN_POSY, SCR_MSG_BTN_SIZEX, SCR_MSG_BTN_SIZEY, BTN_RADIUS, (D4D_BTN_MSG), NULL, NULL, NULL, FONT_BERLIN_SANS_FBDEMI12, NULL, Screenmsg_OnClickBtnOk,NULL)
//D4D_DECLARE_RBUTTON(Screenset_number_btn_Back, "Nazaj", SCR_set_number_BTN_BACK_POSX, SCR_set_number_BTN_BACK_POSY, SCR_set_number_BTN_SIZEX, SCR_set_number_BTN_SIZEY, BTN_RADIUS, (D4D_BTN_SET_NUMBER), NULL, NULL, NULL, FONT_ARIAL16_BOLD, NULL, Screenset_number_OnClickBtnBack,NULL)


/*****************************************************************************
*
* eGUI/D4D screen declaration
*
*
*****************************************************************************/
/* Declare the screen and all its objects */
D4D_DECLARE_STD_SCREEN_BEGIN(screen_msg, Screenmsg_)
    D4D_DECLARE_SCREEN_OBJECT(Screenmsg_lbl_Message_txt)
    D4D_DECLARE_SCREEN_OBJECT(Screenmsg_btn_Ok)
D4D_DECLARE_SCREEN_END()

/*****************************************************************************
*
* Local variables
*
*
*****************************************************************************/


/*****************************************************************************
*
* Graphic objects callback/events functions declaration
*
*
*****************************************************************************/

//Button Ok OnClick CallBack
static void Screenmsg_OnClickBtnOk(D4D_OBJECT* pThis)
{
  D4D_UNUSED(pThis);

  //Go back to the main screen
  D4D_EscapeScreen();
}


/* called on screen initialization proces */
static void Screenmsg_OnInit()
{
//  D4D_TEXT_PROPERTIES def_txtProperties, right_txtProperties, left_txtProperties;
  D4D_TEXT_PROPERTIES def_txtProperties;
  // Labels text propeties initialization
  def_txtProperties.bits.bAlignHoriz = D4D_TXT_PRTY_ALIGN_H_CENTER;
  D4D_SetTextProperties(&Screenmsg_lbl_Message_txt, def_txtProperties);


    D4D_LabelSetText(&Screenmsg_lbl_Message_txt,str_screen_msg_lbl);

}

/***********************************************************************/
/* called with each screen activation */
static void Screenmsg_OnActivate()
{
  /* Customize the color scheme to make sure text is blue*/
  ScreenColorSchemeMsg = *D4D_GetDefaultScheme();
//  ScreenColorSchemeMsg.fore = D4D_COLOR_BLUE;
  D4D_SetDefaultScheme(&ScreenColorSchemeMsg);  
}

/***********************************************************************/
/* called periodically in each D4D_poll runs */
static void Screenmsg_OnMain()
{
}

/***********************************************************************/
/* called with each screen deactivation */
static void Screenmsg_OnDeactivate()
{

}

/***********************************************************************/
/* called with each internal message for this screen */
static Byte Screenmsg_OnObjectMsg(D4D_MESSAGE* pMsg)
{
    D4D_UNUSED(pMsg);
    return 0;
}

/***********************************************************************/

[Gargy]

Hi,

the problem could be with redrawing the background of the screen, If you don't have filled all screen by any object, then then background of the screen MUST be draw.

For this is used macro in config:

// Define a default flags

#define D4D_SCR_F_DEFAULT        (D4D_SCR_F_BCKG)

Check this

Petr

[robroz · Accepted solution]

Hi, thanks for response...

By debugging I found the problem. It was a part of the code that did something on a NULL pointer in On_Activate method of the main screen. Thread was stopped at that error and main_screen was not redrawn...

My bad,

thanks,

regards,

Bul.