自定义的小型调试器，类似于printf(基于emwin),通过屏幕显示

可供外部使用的函数有Hide_Debug(),Show_Debug(),GUI_Printf(const char*,…)

#include 
#include 
#include 
#include 
#include 
#include "GUI.h"
#include "WM.h"
//需要中文字库的支持才可以打印中文信息
//仅需要在需要调试信息的部分调用GUI_Printf(const char* fmt,...)进行显示
//与printf的用法一致
//通过调用Show_debug()创建调试窗口
//通过调用Hide_debug()删除窗口
#define MAX_BUF			1024*4
#define ID_FRAMEWIN_0 (GUI_ID_USER+0)
#define ID_MULTIEDIT_0 (GUI_ID_USER+1)
static WM_HWIN error_hwin;
static WM_HTIMER hTimer;
static char debug_infomation[MAX_BUF];
struct __Debug_Ctrl
{
	const uint32_t DEBUG_MAX_BUF;
	char* const Debug_Buffer;
	bool fresh_flag;
}Debug_Ctrl;
struct __Debug_Ctrl Debug_Ctrl=
{
	.DEBUG_MAX_BUF=MAX_BUF,
	.Debug_Buffer=debug_infomation,
	.fresh_flag=false
};
static const GUI_WIDGET_CREATE_INFO _aDialogCreate[] = {
  { FRAMEWIN_CreateIndirect, "Framewin", ID_FRAMEWIN_0, 0, 300, 300, 300, 0, 0x0, 0 },
  { MULTIEDIT_CreateIndirect, "Multipage", ID_MULTIEDIT_0, 0, 0, 290, 280, 0, 0x0, 0 },
  // USER START (Optionally insert additional widgets)
  // USER END
};
static void _cbDialog(WM_MESSAGE * pMsg) 
{
	WM_HWIN hItem;
	switch (pMsg->MsgId) 
	{
		case WM_PRE_PAINT:
			GUI_MULTIBUF_Begin();
		    break;
		case WM_POST_PAINT:
			GUI_MULTIBUF_End();
		    break;
		case WM_INIT_DIALOG:
			//
			// Initialization of 'Framewin'
			//
			hItem = pMsg->hWin;
			FRAMEWIN_SetFont(hItem, &GUI_FontHZ16);
			FRAMEWIN_SetText(hItem,"调试信息");
			//
			// Initialization of 'Multipage'
			//
			hItem = WM_GetDialogItem(pMsg->hWin, ID_MULTIEDIT_0);
			MULTIEDIT_SetFont(hItem, &GUI_FontHZ16);
			MULTIEDIT_SetAutoScrollV(hItem,1);
			MULTIEDIT_SetAutoScrollH(hItem,1);
			MULTIEDIT_SetMaxNumChars(hItem,Debug_Ctrl.DEBUG_MAX_BUF);
			MULTIEDIT_SetBufferSize(hItem,Debug_Ctrl.DEBUG_MAX_BUF);
			MULTIEDIT_SetText(hItem,Debug_Ctrl.Debug_Buffer);
			MULTIEDIT_SetFocussable(hItem,0);
			break;
		case WM_NOTIFY_PARENT:
			break;
		case WM_TIMER:
			if(Debug_Ctrl.fresh_flag==true)
			{
				hItem = WM_GetDialogItem(pMsg->hWin, ID_MULTIEDIT_0);
				MULTIEDIT_SetText(hItem,Debug_Ctrl.Debug_Buffer);
				Debug_Ctrl.fresh_flag=false;
			}
			WM_RestartTimer(hTimer,200);
			break;
		default:
			WM_DefaultProc(pMsg);
			break;
	}
}
void Hide_debug(void)
{
	WM_DeleteWindow(error_hwin);
}
void Show_debug(void)
{
	WM_HWIN hwin;
	error_hwin=GUI_CreateDialogBox(_aDialogCreate, GUI_COUNTOF(_aDialogCreate), _cbDialog, WM_HBKWIN, 0, 0);
	
	WM_SetStayOnTop(error_hwin,1);
	hwin=WM_GetClientWindow(error_hwin);
	hTimer=WM_CreateTimer(hwin,0,200,0);
}
void GUI_Printf(const char* fmt,...)
{
	static uint16_t Debug_num=0;
	va_list args;
	if(Debug_Ctrl.DEBUG_MAX_BUF-Debug_num<64)//预留出64字节的缓冲区，因此单次使用GUI_Printf不能超过64个字节
	{
		memset(Debug_Ctrl.Debug_Buffer,'\0',Debug_Ctrl.DEBUG_MAX_BUF);
		Debug_num=0;
	}
	va_start(args,fmt);									//取出可变参数
	Debug_num+=vsprintf(&Debug_Ctrl.Debug_Buffer[Debug_num],fmt,args);
	va_end(args);										//恢复堆栈的数据
	Debug_Ctrl.Debug_Buffer[Debug_num]='\n';			//向末尾添加换行符
	Debug_num++;
	Debug_Ctrl.fresh_flag=true;
}