remove some warning

components/dwin/text_displayer.cpp

@@ -31,8 +31,12 @@ bool TextDisplayer::init(DwinScreen *dwin_screen, uint16_t descript_add, uint16_
   return true;
 }
 
-bool TextDisplayer::show() { setTextLengthDirect(m_descript.TextLength); }
-bool TextDisplayer::hide() { setTextLengthDirect(0); }
+bool TextDisplayer::show() { setTextLengthDirect(m_descript.TextLength);
+return true;
+}
+bool TextDisplayer::hide() { setTextLengthDirect(0);
+return true;
+}
 bool TextDisplayer::flushcfg() { return m_dwin_screen->write_varspace16_muti(m_descript_add, (uint16_t *)&m_descript, sizeof(m_descript) / 2, 100); }
 bool TextDisplayer::readcfg() { return m_dwin_screen->read_varspace16_muti(m_descript_add, (uint16_t *)&m_descript, sizeof(m_descript) / 2, 100); }
 void TextDisplayer::setFont(uint16_t EncodeMode, uint8_t font0id, uint8_t font1id, uint16_t frontxsize, uint16_t frontysize) {
@@ -76,4 +80,4 @@ bool TextDisplayer::setVal(const char *val) {
   return true;
 }
 void TextDisplayer::setColor(uint16_t color) { m_descript.Color = color; }
-void TextDisplayer::dumpinfo() {}
+void TextDisplayer::dumpinfo() {}