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我想用快速层显示刚刚输入的字符，vre 3.0 实例代码input如下：

void handle_sysevt(VMINT message, VMINT param)
{ 
 switch(message)
 {
 case VM_MSG_CREATE:
  screen_width = vm_graphic_get_screen_width();  
  screen_height = vm_graphic_get_screen_height();
  character_height = vm_graphic_get_character_height();
  layer_hdl[0] = vm_graphic_create_layer(0, 0, screen_width, screen_height, -1);
  
  break;
 case VM_MSG_PAINT:
  draw_screen();
  break;
 /* this message will be triggered when call input function */
 case VM_MSG_INACTIVE:      
  vm_graphic_delete_layer(layer_hdl[0]);
  break;
 /* this message will be triggered when come back from input window */
 case VM_MSG_ACTIVE:       
  layer_hdl[0] = vm_graphic_create_layer(0, 0, screen_width, screen_height, -1);
 /* layer_buf[0] = vm_graphic_get_layer_buffer(layer_hdl[0]);*/
  break;
 case VM_MSG_QUIT:
  vm_graphic_delete_layer(layer_hdl[0]);
  vm_exit_app();
  break;
 }
}

input函数和回调就不用说了。

void draw_screen(void)
{
 VMWCHAR w_softkey_text[8];
 VMINT string_width;
 layer_buf[0] = vm_graphic_get_layer_buffer(layer_hdl[0]);
 vm_graphic_fill_rect(layer_buf[0], 0, 0, screen_width, screen_height, VM_COLOR_BLACK, VM_COLOR_BLACK);
 vm_graphic_fill_rect(layer_buf[0], 0, 0, screen_width, screen_height / 2, VM_COLOR_RED, VM_COLOR_WHITE); 
 /*draw input text*/
 draw_text_in_rect(layer_buf[0], w_text, 2, 2, screen_width, screen_height / 2, VM_COLOR_BLACK);
 /*draw soft key*/
 vm_gb2312_to_ucs2(w_softkey_text, 8, softkey_text[0]);
 vm_graphic_textout(layer_buf[0], 2, screen_height - character_height - 2, w_softkey_text, wstrlen(w_softkey_text), VM_COLOR_WHITE);
 vm_gb2312_to_ucs2(w_softkey_text, 8, softkey_text[1]);
 string_width = vm_graphic_get_string_width(w_softkey_text);
 vm_graphic_textout(layer_buf[0], screen_width - string_width - 2, screen_height - character_height - 2, w_softkey_text, wstrlen(w_softkey_text), VM_COLOR_WHITE);
 vm_graphic_flush_layer(layer_hdl, 1);
}

以上是正常的！！！！

但是，问题来了：
我想在快速层上显示该输入的字符串；将handle_sysevt()修改如下：

void handle_sysevt(VMINT message, VMINT param)
{ 
 switch(message)
 {
 case VM_MSG_CREATE:
  screen_width = vm_graphic_get_screen_width();  
  screen_height = vm_graphic_get_screen_height();
  character_height = vm_graphic_get_character_height();
  layer_hdl[0] = vm_graphic_create_layer(0, 0, screen_width, screen_height, -1);
  layer_hdl[1] = vm_graphic_create_layer(0, 0, screen_width, screen_height, 0xFFFD);
  break;
 case VM_MSG_PAINT:
  draw_screen();
  break;
 /* this message will be triggered when call input function */
 case VM_MSG_INACTIVE: 
  vm_graphic_delete_layer(layer_hdl[1]);
  vm_graphic_delete_layer(layer_hdl[0]);
  break;
 /* this message will be triggered when come back from input window */
 case VM_MSG_ACTIVE:       
  layer_hdl[0] = vm_graphic_create_layer(0, 0, screen_width, screen_height, -1);
  layer_hdl[1] = vm_graphic_create_layer(0, 0, screen_width, screen_height, 0xFFFD);
  break;
 case VM_MSG_QUIT:
  vm_graphic_delete_layer(layer_hdl[1]);
  vm_graphic_delete_layer(layer_hdl[0]);

  vm_exit_app();
  break;
 }
}


void draw_screen(void)
{
 VMWCHAR w_softkey_text[8];
 VMINT string_width;
 layer_buf[1] = vm_graphic_get_layer_buffer(layer_hdl[1]);//快速层声明
 vm_graphic_fill_rect(layer_buf[1], 0, 0, screen_width, screen_height, VM_COLOR_BLACK, VM_COLOR_BLACK);
 vm_graphic_fill_rect(layer_buf[1], 0, 0, screen_width, screen_height / 2, VM_COLOR_RED, VM_COLOR_WHITE); 
 /*draw input text*/
 draw_text_in_rect(layer_buf[1], w_text, 2, 2, screen_width, screen_height / 2, VM_COLOR_BLACK);//输出到快速层上
 /*draw soft key*/
 vm_gb2312_to_ucs2(w_softkey_text, 8, softkey_text[0]);
 vm_graphic_textout(layer_buf[1], 2, screen_height - character_height - 2, w_softkey_text, wstrlen(w_softkey_text), VM_COLOR_WHITE);
 vm_gb2312_to_ucs2(w_softkey_text, 8, softkey_text[1]);
 string_width = vm_graphic_get_string_width(w_softkey_text);
 vm_graphic_textout(layer_buf[1], screen_width - string_width - 2, screen_height - character_height - 2, w_softkey_text, wstrlen(w_softkey_text), VM_COLOR_WHITE);
 vm_graphic_flush_layer(layer_hdl, 2);//将两层合并在一起刷屏，注意，如果刷一层的话，估计将只刷掉了基层；
}

结果：输进去了，单步运行可以看到输入的东西。但是显示不出来！！！！！！！！
到drawscreen()函数体内，w_text的内容还正常，却显示不出来...........


还有一个问题是：有时候，input输入框，并不能触发inactive这个系统事件。
什么原因？太诡异了............