Difference between revisions of "WM Focusable Window (Sample)"
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Normally, emWin windows do not receive input focus. This sample demonstrates how a window can be realized, that is able to receive input focus. |
Normally, emWin windows do not receive input focus. This sample demonstrates how a window can be realized, that is able to receive input focus. |
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+ | |||
+ | == Demo == |
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+ | |||
+ | <html><iframe src="https://wiki.segger.com/demo/emwin/WM_FocusableWindow/WM_FocusableWindow.html" width="480" height="272" style="border: 1px #c0c0c0 solid;" marginwidth="0" marginheight="0" hspace="0" vspace="0" scrolling="no"> </iframe></html> |
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== Code == |
== Code == |
Latest revision as of 16:38, 7 March 2022
WM_FocusableWindow.c | |
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File(s) required |
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Runs in simulation | Yes |
Runs on target | Yes |
Download | WM_FocusableWindow.c |
Normally, emWin windows do not receive input focus. This sample demonstrates how a window can be realized, that is able to receive input focus.
Demo
Code
/*********************************************************************
* SEGGER Microcontroller GmbH *
* Solutions for real time microcontroller applications *
**********************************************************************
* *
* (c) 1996 - 2020 SEGGER Microcontroller GmbH *
* *
* Internet: www.segger.com Support: support@segger.com *
* *
**********************************************************************
** emWin V6.10 - Graphical user interface for embedded applications **
emWin is protected by international copyright laws. Knowledge of the
source code may not be used to write a similar product. This file may
only be used in accordance with a license and should not be re-
distributed in any way. We appreciate your understanding and fairness.
----------------------------------------------------------------------
File : WM_FocusableWindow.c
Purpose : Sample that demonstrates how a window can accept focus.
Requirements: WindowManager - (x)
MemoryDevices - ( )
AntiAliasing - ( )
VNC-Server - ( )
PNG-Library - ( )
TrueTypeFonts - ( )
----------------------------------------------------------------------
*/
#include "DIALOG.h"
/*********************************************************************
*
* Externals
*
**********************************************************************
*/
/*********************************************************************
*
* Types
*
**********************************************************************
*/
/*********************************************************************
*
* Defines
*
**********************************************************************
*/
#define ID_WIN0 (GUI_ID_USER + 0x00)
/*********************************************************************
*
* Static data
*
**********************************************************************
*/
/*********************************************************************
*
* Static code
*
**********************************************************************
*/
/*********************************************************************
*
* _cbWin
*/
static void _cbWin(WM_MESSAGE * pMsg) {
WM_PID_STATE_CHANGED_INFO * pInfo;
WM_MESSAGE Message;
static int Id;
switch (pMsg->MsgId) {
case WM_PAINT:
GUI_SetBkColor(GUI_RED);
GUI_Clear();
break;
case WM_SET_ID:
Id = pMsg->Data.v; // Remember Id
break;
case WM_GET_ID:
pMsg->Data.v = Id; // Return Id
break;
case WM_SET_FOCUS:
//
// If pMsg->Data.v is 1 the window manager tries to set the focus
//
if (pMsg->Data.v == 1) {
pMsg->Data.v = 0;
Message.Data.v = WM_NOTIFICATION_GOT_FOCUS; // Prepare get-focus message
} else if (pMsg->Data.v == 0) {
Message.Data.v = WM_NOTIFICATION_LOST_FOCUS; // Prepare lost-focus message
}
Message.MsgId = WM_NOTIFY_PARENT;
Message.hWin = WM_GetParent(pMsg->hWin);
Message.hWinSrc = pMsg->hWin;
WM_SendMessage(Message.hWin, &Message); // Send message to parent
break;
case WM_PID_STATE_CHANGED:
//
// Check how pid state has changed
//
pInfo = (WM_PID_STATE_CHANGED_INFO *)pMsg->Data.p;
if (pInfo) {
//
// If previous state is 0 and current is 1 we have a click
//
if ((pInfo->State == 1) && (pInfo->StatePrev == 0)) {
//
// On click set focus to this window
//
WM_SetFocus(pMsg->hWin);
}
}
break;
default:
WM_DefaultProc(pMsg);
break;
}
}
/*********************************************************************
*
* _cbBk
*/
static void _cbBk(WM_MESSAGE * pMsg) {
int Id;
int NCode;
WM_HWIN hItem;
switch (pMsg->MsgId) {
case WM_PAINT:
GUI_SetBkColor(GUI_BLACK);
GUI_Clear();
break;
case WM_NOTIFY_PARENT:
Id = WM_GetId(pMsg->hWinSrc);
NCode = pMsg->Data.v;
switch (Id) {
case GUI_ID_EDIT0:
switch (NCode) {
case WM_NOTIFICATION_GOT_FOCUS:
hItem = WM_GetDialogItem(pMsg->hWin, GUI_ID_TEXT0);
TEXT_SetText(hItem, "Enter: EDIT0");
break;
case WM_NOTIFICATION_LOST_FOCUS:
hItem = WM_GetDialogItem(pMsg->hWin, GUI_ID_TEXT1);
TEXT_SetText(hItem, "Leave: EDIT0");
break;
}
break;
case GUI_ID_EDIT1:
switch (NCode) {
case WM_NOTIFICATION_GOT_FOCUS:
hItem = WM_GetDialogItem(pMsg->hWin, GUI_ID_TEXT0);
TEXT_SetText(hItem, "Enter: EDIT1");
break;
case WM_NOTIFICATION_LOST_FOCUS:
hItem = WM_GetDialogItem(pMsg->hWin, GUI_ID_TEXT1);
TEXT_SetText(hItem, "Leave: EDIT1");
break;
}
break;
case GUI_ID_TEXT2:
switch (NCode) {
case WM_NOTIFICATION_GOT_FOCUS:
hItem = WM_GetDialogItem(pMsg->hWin, GUI_ID_TEXT0);
TEXT_SetText(hItem, "Enter: TEXT2");
break;
case WM_NOTIFICATION_LOST_FOCUS:
hItem = WM_GetDialogItem(pMsg->hWin, GUI_ID_TEXT1);
TEXT_SetText(hItem, "Leave: TEXT2");
break;
}
break;
case ID_WIN0:
switch (NCode) {
case WM_NOTIFICATION_GOT_FOCUS:
hItem = WM_GetDialogItem(pMsg->hWin, GUI_ID_TEXT0);
TEXT_SetText(hItem, "Enter: WIN0");
break;
case WM_NOTIFICATION_LOST_FOCUS:
hItem = WM_GetDialogItem(pMsg->hWin, GUI_ID_TEXT1);
TEXT_SetText(hItem, "Leave: WIN0");
break;
}
break;
}
break;
default:
WM_DefaultProc(pMsg);
break;
}
}
/*********************************************************************
*
* Public code
*
**********************************************************************
*/
/*********************************************************************
*
* MainTask
*/
void MainTask(void) {
WM_HWIN hItem;
GUI_Init();
WM_MULTIBUF_Enable(1);
WM_SetCallback(WM_HBKWIN, _cbBk);
//
// Create widgets
//
EDIT_CreateEx(10, 10, 80, 20, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_EDIT0, 20);
EDIT_CreateEx(10, 40, 80, 20, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_EDIT1, 20);
hItem = TEXT_CreateEx(10, 70, 80, 20, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_TEXT2, "Text");
TEXT_SetTextColor(hItem, GUI_WHITE);
//
// Create window and teach it to manage focus
//
hItem = WM_CreateWindowAsChild(10, 100, 80, 20, WM_HBKWIN, WM_CF_SHOW, _cbWin, 0);
WM_SetId(hItem, ID_WIN0);
//
// Show leave and enter messages
//
hItem = TEXT_CreateEx(160, 10, 120, 20, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_TEXT0, "Enter: ");
TEXT_SetTextColor(hItem, GUI_WHITE);
hItem = TEXT_CreateEx(160, 40, 120, 20, WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_TEXT1, "Leave: ");
TEXT_SetTextColor(hItem, GUI_WHITE);
while (1) {
GUI_Delay(100);
}
}
/*************************** End of file ****************************/