STM32F747 Discovery STemWin Button function inverted

Hello,

I modified the STemWin(5.44) Font example from the Discovery H747 Cube Examples (version 1.7.0) and made a simple screen with one Button and one text element. The Button, if pressed displays a different text (not pressed = "Disc H747", pressed = "Hello").

case ID_BUTTON_0: // Notifications sent by 'btn_00'
      switch(NCode) {
      case WM_NOTIFICATION_CLICKED:
        // USER START (Optionally insert code for reacting on notification message)
				hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_0);
				TEXT_SetText(hItem, "Hello");			
        // USER END
        break;
      case WM_NOTIFICATION_RELEASED:
        // USER START (Optionally insert code for reacting on notification message)	
			  hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_0);
			  TEXT_SetText(hItem, "DiscH747");						
        // USER END
        break;

Problem: The button functions WM_NOTIFICATION_RELEASED and WM_NOTIFICATION_CLICKED are inverted. (not pressed = "Hello", pressed = "Disc H747"). If I put my text the other way round everything works.

I did the same modification with the Discovery F746 examples (from the Discovery F746Cube Examples) - there is no problem. Has anyone a solution for this problem? Thanks in advance,
Dave

Hi Sven,

thanks you very much for your answer. Sorry about the wrong thread title - it should be : STM32H747 Discovery STemWin Button ......

I checked the GUI_PID_STATE structure members. Everything is fine - Pressed is 1 ,when pressed, and 0 when not pressed. The problem seems to appear in the ID and NCode values which are delivered to my DLG.c File. With the Keil Debugger I checked the values directly here:

case WM_NOTIFY_PARENT:
    Id    = WM_GetId(pMsg->hWinSrc);
    NCode = pMsg->Data.v;
    id_value = Id;
    n_value = NCode;

But there is no info in the PDF about the meaning of this values in the manual.
If I start the app id_value = 801 and n_value = 8
If I click my button id_value = 801 and n_value = 1
If I release my button id_value = 801 and n_value = 2
I added a checkbox, the id = 803 and n_values click/release like the button
I added a slider the id = 805, n_values click/release like the button, n_value for value_changed = 5

After program start the button appears visually unpressed. After the first click the visual appearance of the Button is as well inverted.

My impression is - from the moment on, when I click any element on the screen something happens to the Ncode values and/or ID values. The STemWin Version is 5.44, the CubeMX is the newest (1.7).

Regards
Dave