恩，谢谢你的回复！
评估板上的屏幕是自带的，官网刚好也有对应的例程。出现这样的错误我想也是驱动文件没配置好。WM_SetCreateFlags(WM_CF_MEMDEV);这条指令加和不加效果是一样的，也就是可能是LCDConf_stm32373c_eval.c和GUIConf_stm32373c_eval.c这两个文件官方没有配置好。
/* 这是LCDConf_stm32373c_eval.c */
#include "GUI.h"
#include "GUIDRV_FlexColor.h"
#include "global_includes.h"

//
// Physical display size
//
#define XSIZE_PHYS  240
#define YSIZE_PHYS  320
/*********************************************************************
*
*       Configuration checking
*
**********************************************************************
*/
#ifndef   VXSIZE_PHYS
  #define VXSIZE_PHYS XSIZE_PHYS
#endif
#ifndef   VYSIZE_PHYS
  #define VYSIZE_PHYS YSIZE_PHYS
#endif
#ifndef   XSIZE_PHYS
  #error Physical X size of display is not defined!
#endif
#ifndef   YSIZE_PHYS
  #error Physical Y size of display is not defined!
#endif
#ifndef   GUICC_565
  #error Color conversion not defined!
#endif
#ifndef   GUIDRV_FLEXCOLOR
  #error No display driver defined!
#endif
/*********************************************************************
*
*       Defines, sfrs 这个也不清楚为什么这样配置
*
**********************************************************************
*/
#define START_BYTE         0x70
#define SET_INDEX          0x00
#define READ_STATUS        0x01
#define LCD_WRITE_REG      0x02
#define LCD_READ_REG       0x03
/*********************************************************************
*
*       Local functions
*
**********************************************************************
*/
/********************************************************************
*
*       LcdWriteReg
*
* Function description:
*   Sets display register
*/
static void LcdWriteReg(U16 Data) {
  LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
  LCD_WriteRegIndex (Data);
  LCD_nCS_StartByte(START_BYTE | LCD_WRITE_REG);
}
/********************************************************************
*
*       LcdWriteData
*
* Function description:
*   Writes a value to a display register
*/
static void LcdWriteData(U16 Data) {
  LCD_WriteRAM(Data);
  LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
}
/********************************************************************
*
*       LcdWriteDataMultiple
*
* Function description:
*   Writes multiple values to a display register.
*/
static void LcdWriteDataMultiple(U16 * pData, int NumItems) {
  
  while (NumItems--) {
    LCD_WriteRAM (*pData++);
  }
  
}
/********************************************************************
*
*       LcdReadDataMultiple
*
* Function description:
*   Reads multiple values from a display register.
*/
static void LcdReadDataMultiple(U16 * pData, int NumItems) {
  
  LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
  while (NumItems--) {
    *pData++ = LCD_ReadReg(R34);
  }
}
/*********************************************************************
*
*       Public functions
*
**********************************************************************
*/
/*********************************************************************
*
*       LCD_X_Config
*
* Function description:
*   Called during the initialization process in order to set up the
*   display driver configuration.
*
*/
void LCD_X_Config(void) {
  GUI_DEVICE * pDevice;
  CONFIG_FLEXCOLOR Config = {0};
  GUI_PORT_API PortAPI = {0};
  //
  // Set display driver and color conversion
  //
  pDevice = GUI_DEVICE_CreateAndLink(GUIDRV_FLEXCOLOR, GUICC_565, 0, 0);
  //
  // Display driver configuration, required for Lin-driver
  //
  LCD_SetSizeEx (0, XSIZE_PHYS , YSIZE_PHYS);
  LCD_SetVSizeEx(0, VXSIZE_PHYS, VYSIZE_PHYS);
  //
  // Orientation
  //
  Config.Orientation = GUI_SWAP_XY | GUI_MIRROR_Y;
  GUIDRV_FlexColor_Config(pDevice, &Config);
  //
  // Set controller and operation mode
  //
  PortAPI.pfWrite16_A0  = LcdWriteReg;
  PortAPI.pfWrite16_A1  = LcdWriteData;
  PortAPI.pfWriteM16_A1 = LcdWriteDataMultiple;
  PortAPI.pfReadM16_A1  = LcdReadDataMultiple;
  GUIDRV_FlexColor_SetFunc(pDevice, &amportAPI, GUIDRV_FLEXCOLOR_F66708, GUIDRV_FLEXCOLOR_M16C0B16);
}
/*********************************************************************
*
*       LCD_X_DisplayDriver
*
* Function description:
*   This function is called by the display driver for several purposes.
*   To support the according task the routine needs to be adapted to
*   the display controller. Please note that the commands marked with
*   'optional' are not cogently required and should only be adapted if
*   the display controller supports these features.
*
* Parameter:
*   LayerIndex - Index of layer to be configured
*   Cmd        - Please refer to the details in the switch statement below
*   pData      - Pointer to a LCD_X_DATA structure
*
* Return Value:
*   < -1 - Error
*     -1 - Command not handled
*      0 - Ok
*/
int LCD_X_DisplayDriver(unsigned LayerIndex, unsigned Cmd, void * pData) {
  int r;
  (void) LayerIndex;
  (void) pData;
  
  switch (Cmd) {
  case LCD_X_INITCONTROLLER: {
    STM32373C_LCD_Init();
    return 0;
  }
  default:
    r = -1;
  }
  return r;
}
这里是不是哪里还要改呢，“这原本是官网的”，运行GUI_init（）后屏幕左边有一条窄的雪花状的矩形，右边是宽的黑屏。