STM32f429+ FreeRTOS +EMWIN 创建窗体时，不能正常显示。

gingerjyz 提问时间：2021-5-27 21:03 / 未解决

问答
是否解决:	未解决

STM32f429+ FreeRTOS +EMWIN + 5寸屏
使用GUI_WIDGET_CREATE_INFO 资源表创建窗体，
1）主窗体使用： hWinMain = GUI_CreateDialogBox(_aDialogCreate, GUI_COUNTOF(_aDialogCreate), _cbDialog_main, WM_HBKWIN, 0, 0);
2）外部实体按键检测到对应的键值，发送自定义消息，WM_SendMessageNoPara(WM_GetClientWindow(hWinMain), MSG_DCV);
3）自定义消息处理--》_cbDialog_main 回调函数 -- case MSG_DCV:
hDCV = GUI_CreateDialogBox(_aDialogCreate_DCV, GUI_COUNTOF(_aDialogCreate_DCV), &_cbCallback_DCV_new, WM_HBKWIN, 0, 0);
4）创建窗体显示控件
但是下个几个情况：
① 在 case WM_INIT_DIALOG中对EDIT 进行WM_SetFocus操作时，窗体不能正确显示；单独在MainTask函数调用是正常的；
假若在MainTask.c 文件使用hWinMain = GUI_CreateDialogBox(_aDialogCreate_DCV, GUI_COUNTOF(_aDialogCreate_DCV), &_cbCallback_DCV_new, 0, 0, 0); 直接创建，窗体可以正常显示，也能聚焦到EDIT0,
② 在 case WM_INIT_DIALOG中对BUTTON 进行BUTTON_SetFocusable(hutem，0)操作时，窗体不能正确显示；
③ case MSG_Set_Limit: 外部实体按键发送自定义消息，收到后对EDIT0设置焦点，Focus_index的值仿真也变成01，下面的EDIT_SetSel(hItem,0,-1); 本意是对EDIT0 的内容全选，
实际的测试结果不正常单片机死机；

=============================================================================
① 的问题，仿真运行程序发现，程序运行卡死在
_cbCallback_DCV_new回调函数中的WM_INIT_DIALOG部分的 hItem = WM_GetDialogItem(pMsg->hWin, ID_EDIT_2);
这个位置；如若将这部分代码注释掉，则卡死在后面的代码语句；
=============================================================================

// 窗体资源表
static const GUI_WIDGET_CREATE_INFO _aDialogCreate_DCV[] =
{
{ WINDOW_CreateIndirect, "Window", ID_WINDOW_0, 0, 0, 800, 480, 0, 0x0, 0 },

{ BUTTON_CreateIndirect, "Button", ID_BUTTON_0, 660, 20, 120, 40, 0, 0x0, 0 },
{ BUTTON_CreateIndirect, "Button", ID_BUTTON_1, 660, 80, 120, 40, 0, 0x0, 0 },
{ BUTTON_CreateIndirect, "Button", ID_BUTTON_2, 660, 140, 120, 40, 0, 0x0, 0 },
{ BUTTON_CreateIndirect, "Button", ID_BUTTON_3, 660, 200, 120, 40, 0, 0x0, 0 },
{ BUTTON_CreateIndirect, "Button", ID_BUTTON_4, 660, 260, 120, 40, 0, 0x0, 0 },
{ BUTTON_CreateIndirect, "Button", ID_BUTTON_5, 660, 320, 120, 40, 0, 0x0, 0 },
{ BUTTON_CreateIndirect, "Button", ID_BUTTON_6, 660, 380, 120, 40, 0, 0x0, 0 },

{ TEXT_CreateIndirect, "Text", ID_TEXT_0, 260, 10, 90, 32, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_1, 450, 107, 55, 38, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_2, 530, 88, 80, 32, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_3, 530, 120, 80, 32, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_4, 90, 200, 40, 32, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_8, 40, 91, 420, 64, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_9, 280, 200, 80, 32, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_11, 20, 340, 80, 32, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_12, 90, 340, 120, 32, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_13, 190, 340, 80, 32, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_14, 20, 385, 140, 32, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_15, 130, 385, 120, 32, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_16, 250, 385, 120, 32, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_17, 360, 384, 120, 32, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_21, 470, 340, 121, 32, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_23, 470, 385, 90, 32, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_24, 571, 385, 80, 32, 0, 0x0, 0 },
{ EDIT_CreateIndirect, "Edit", ID_EDIT_0, 90, 335, 100, 37, 0, 0x0, 0 },
{ EDIT_CreateIndirect, "Edit", ID_EDIT_1, 580, 335, 60, 37, 0, 0x0, 0 },
{ EDIT_CreateIndirect, "Edit", ID_EDIT_2, 128, 200, 150, 37, 0, 0x0, 0 },

{ EDIT_CreateIndirect, "Edit", ID_EDIT_0, 90, 335, 100, 37, 0, 0x0, 0 },
{ EDIT_CreateIndirect, "Edit", ID_EDIT_1, 580, 335, 60, 37, 0, 0x0, 0 },
{ EDIT_CreateIndirect, "Edit", ID_EDIT_2, 128, 200, 150, 37, 0, 0x0, 0 },
};

// 回调函数

static void _cbCallback_DCV_new(WM_MESSAGE * pMsg)
{
int NCode, Id;
WM_HWIN hWin = pMsg->hWin;
WM_HWIN hItem;
unsigned char Focus_index;
switch (pMsg->MsgId)
{
case WM_PAINT :
//GUI_SetBkColor(0xff87CEEB);
GUI_SetBkColor(0xCCE8CF);
GUI_Clear();

GUI_SetPenSize(4);
         GUI_SetColor(0x993333);
         GUI_DrawLine(10,330,645,330);
         GUI_DrawLine(10,330,10,430);
         GUI_DrawLine(645,330,645,430);
         GUI_DrawLine(10,430,645,430);
         GUI_DrawLine(10,375,645,375);
         GUI_DrawLine(240,330,240,430);
         GUI_DrawLine(460,330,460,430);
break;
      case WM_INIT_DIALOG:

hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_0);
BUTTON_SetFont(hItem,GUI_FONT_32B_1);
BUTTON_SetText(hItem,"");
//WM_DisableWindow(hItem);
//BUTTON_SetFocusable(hItem,0);
//WIDGET_SetFocusable(hItem,0);
hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_1);
BUTTON_SetFont(hItem,GUI_FONT_32B_1);
BUTTON_SetText(hItem,"+ -");
//BUTTON_SetFocusable(hItem,0);
hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_2);
BUTTON_SetFont(hItem,GUI_FONT_32B_1);
BUTTON_SetText(hItem,"Limit");
//BUTTON_SetFocusable(hItem,0);

hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_3);
BUTTON_SetFont(hItem,GUI_FONT_32B_1);
BUTTON_SetText(hItem,"Voltage");
//BUTTON_SetFocusable(hItem,0);

hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_4);
BUTTON_SetFont(hItem,GUI_FONT_32B_1);
BUTTON_SetText(hItem,"Gear");
//BUTTON_SetFocusable(hItem,0);

hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_5);
BUTTON_SetFont(hItem,GUI_FONT_32B_1);
BUTTON_SetText(hItem,"");
//BUTTON_SetFocusable(hItem,0);
//WM_DisableWindow(hItem);
hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_6);
BUTTON_SetFont(hItem,GUI_FONT_32B_1);
BUTTON_SetText(hItem,"Reback");
//BUTTON_SetFocusable(hItem,0);
//WM_DisableWindow(hItem);
//WIDGET_SetFocusable(hItem,0);
#if 0
hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_0);
WM_DisableWindow(hItem);
hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_1);
WM_DisableWindow(hItem);
hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_2);
WM_DisableWindow(hItem);
hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_3);
WM_DisableWindow(hItem);
hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_4);
WM_DisableWindow(hItem);
hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_5);
WM_DisableWindow(hItem);
//hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_6);
//WM_DisableWindow(hItem);
#endif

hItem = WM_GetDialogItem(pMsg->hWin, ID_EDIT_0);
EDIT_SetFont(hItem, GUI_FONT_32B_1);
         EDIT_SetTextColor(hItem, EDIT_CI_ENABLED,GUI_RED);

EDIT_SetText(hItem,"100.00");
WIDGET_SetFocusable(hItem,1);
// 程序运行此条语句，窗体不能正常显示
//WM_SetFocus(hItem);

//EDIT_EnableBlink(hItem,1000,1);
//EDIT_SetSel(hItem,0,-1);

hItem = WM_GetDialogItem(pMsg->hWin, ID_EDIT_1);
EDIT_SetText(hItem,"5");
EDIT_SetTextColor(hItem, EDIT_CI_ENABLED,GUI_MAGENTA);
EDIT_SetFont(hItem, GUI_FONT_32_1);
WIDGET_SetFocusable(hItem,1);
EDIT_SetpfAddKeyEx(hItem, _cbEditAddKey);
//WM_DisableWindow(hItem);

hItem = WM_GetDialogItem(pMsg->hWin, ID_EDIT_2);

EDIT_SetText(hItem,"100.00");
EDIT_SetTextColor(hItem, EDIT_CI_ENABLED,GUI_BLUE);
EDIT_SetFont(hItem, GUI_FONT_32_1);
WIDGET_SetFocusable(hItem,1);

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_0);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetText(hItem,"DC-V");
WIDGET_SetFocusable(hItem,0);
WM_DisableWindow(hItem);

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_1);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
//TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetText(hItem,"V");
WIDGET_SetFocusable(hItem,0);

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_2);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x000000FF));
TEXT_SetText(hItem,"OFF");
WIDGET_SetFocusable(hItem,0);

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_3);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetText(hItem,"Hand");
WIDGET_SetFocusable(hItem,0);

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_4);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
//TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetText(hItem,"V_");
WIDGET_SetFocusable(hItem,0);

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_8);
TEXT_SetFont(hItem,GUI_FONT_D64);
TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetText(hItem,"0.000000");

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_9);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
//TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetText(hItem,"V");
WIDGET_SetFocusable(hItem,0);

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_11);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
//TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetText(hItem,"Limit");
WIDGET_SetFocusable(hItem,0);

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_13);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
//TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetText(hItem,"V");

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_14);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
//TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetText(hItem,"R_Error");
WIDGET_SetFocusable(hItem,0);

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_15);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
//TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetTextColor(hItem,GUI_BLUE);
TEXT_SetText(hItem,"0.000%");
WIDGET_SetFocusable(hItem,0);

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_16);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
//TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetText(hItem,"A_Error");

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_17);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
//TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetTextColor(hItem,GUI_BLUE);
TEXT_SetText(hItem,"0.000%");
WIDGET_SetFocusable(hItem,0);

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_21);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
//TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetText(hItem,"Division");
WIDGET_SetFocusable(hItem,0);

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_23);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
//TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetText(hItem,"Status");

hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_24);
TEXT_SetFont(hItem,GUI_FONT_32B_1);
//TEXT_SetTextColor(hItem,GUI_MAKE_COLOR(0x00800000));
TEXT_SetText(hItem,"OK");
WIDGET_SetFocusable(hItem,0);
         break;

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

         }
         break;
case WM_TIMER:

break;
case WM_KEY:
switch (((WM_KEY_INFO*)(pMsg->Data.p))->Key)
{
case GUI_KEY_TAB:
break;
case GUI_KEY_LEFT://GUI_KEY_LEFT

break;
case GUI_KEY_RIGHT://GUI_KEY_LEFT

break;
case GUI_KEY_ENTER:
break;

}
break;
case MSG_Set_Limit:
hItem = WM_GetDialogItem(pMsg->hWin,ID_EDIT_0);
WM_SetFocus(hItem);
Focus_index = WM_HasFocus(WM_GetDialogItem(pMsg->hWin,ID_EDIT_0));
EDIT_SetSel(hItem,0,-1);
break;

      default:
         WM_DefaultProc(pMsg);
break;
}
}