Eric6與pyqt5學習筆記 10【彈出視窗大全】
阿新 • • 發佈:2018-12-21
from PyQt5.QtWidgets import *from PyQt5.QtCore import Qt, pyqtSignal, QTimer, QThread # 後三個都是用於第二個視窗class MyWindow(QWidget): def __init__(self): super().__init__() self.setWindowTitle("PyQt5 彈出視窗(框)大全") self.resize(400, 300) # 全域性佈局(注意引數 self) wl = QVBoxLayout(self) # 區域性佈局 h1 = QHBoxLayout() # 輸入框 h2 = QHBoxLayout() # 訊息視窗 h3 = QHBoxLayout() # 檔案(夾)開啟,儲存 h4 = QHBoxLayout() # 顏色、字型、自定義 btn1_1 = QPushButton('輸入:整數') btn1_2 = QPushButton('輸入:小數') btn1_3 = QPushButton('輸入:文字') btn1_4 = QPushButton('輸入:多文') btn1_5 = QPushButton('輸入:選項' ) btn2_1 = QPushButton('訊息:資訊') btn2_2 = QPushButton('訊息:問答') btn2_3 = QPushButton('訊息:警告') btn2_4 = QPushButton('訊息:危險') btn2_5 = QPushButton('訊息:關於') btn3_1 = QPushButton('檔案:資料夾') btn3_2 = QPushButton('檔案:單檔案') btn3_3 = QPushButton('檔案:多檔案') btn3_4 = QPushButton('檔案:儲存' ) btn3_5 = QPushButton('檔案:另存為') btn4_1 = QPushButton('顏色') btn4_2 = QPushButton('字型') btn4_3 = QPushButton('自定義') for btn in (btn1_1, btn1_2, btn1_3, btn1_4, btn1_5): h1.addWidget(btn) for btn in (btn2_1, btn2_2, btn2_3, btn2_4, btn2_5): h2.addWidget(btn) for btn in (btn3_1, btn3_2, btn3_3, btn3_4, btn3_5): h3.addWidget(btn) for btn in (btn4_1, btn4_2, btn4_3): h4.addWidget(btn) btn1_1.clicked.connect(self.do_btn1_1) #('輸入:整數') btn1_2.clicked.connect(self.do_btn1_2) #('輸入:小數') btn1_3.clicked.connect(self.do_btn1_3) #('輸入:文字') btn1_4.clicked.connect(self.do_btn1_4) #('輸入:多文') btn1_5.clicked.connect(self.do_btn1_5) #('輸入:選項') btn2_1.clicked.connect(self.do_btn2_1) #('訊息:資訊') btn2_2.clicked.connect(self.do_btn2_2) #('訊息:問答') btn2_3.clicked.connect(self.do_btn2_3) #('訊息:警告') btn2_4.clicked.connect(self.do_btn2_4) #('訊息:危險') btn2_5.clicked.connect(self.do_btn2_5) #('訊息:關於') btn3_1.clicked.connect(self.do_btn3_1) #('檔案:資料夾') btn3_2.clicked.connect(self.do_btn3_2) #('檔案:單檔案') btn3_3.clicked.connect(self.do_btn3_3) #('檔案:多檔案') btn3_4.clicked.connect(self.do_btn3_4) #('檔案:儲存') btn3_5.clicked.connect(self.do_btn3_5) #('檔案:另存為') btn4_1.clicked.connect(self.do_btn4_1) #('顏色') btn4_2.clicked.connect(self.do_btn4_2) #('字型') btn4_3.clicked.connect(self.do_btn4_3) #('自定義') # 加到全域性佈局 wl.addLayout(h1) wl.addLayout(h2) wl.addLayout(h3) wl.addLayout(h4) self.window2 = MyWindow2() # 自定義視窗 self.window2.have_closed_signal.connect(self.echo) # 接收自定義視窗關閉時傳送過來的訊號,交給 echo 函式顯示 def echo(self, value): '''顯示對話方塊返回值''' QMessageBox.information(self, "返回值", "得到:{}\n\ntype: {}".format(value, type(value)), QMessageBox.Yes | QMessageBox.No) #pass # ===================================================================== def do_btn1_1(self, event): #('輸入:整數') #後面四個數字的作用依次是 初始值 最小值 最大值 步幅 value, ok = QInputDialog.getInt(self, "輸入框標題", "這是提示資訊\n\n請輸入整數:", 37, -10000, 10000, 2) #self.echo(value) def do_btn1_2(self, event): #('輸入:小數') #後面四個數字的作用依次是 初始值 最小值 最大值 小數點後位數 value, ok = QInputDialog.getDouble(self, "輸入框標題", "這是提示資訊\n\n請輸入整數:", 37.56, -10000, 10000, 2) self.echo(value) def do_btn1_3(self, event): #('輸入:文字') #第三個引數表示顯示型別,可選,有正常(QLineEdit.Normal)、密碼( QLineEdit. Password)、不顯示( QLineEdit. NoEcho)三種情況 value, ok = QInputDialog.getText(self, "輸入框標題", "這是提示資訊\n\n請輸入文字:", QLineEdit.Normal, "這是預設值") self.echo(value) def do_btn1_4(self, event): #('輸入:多文') value, ok = QInputDialog.getMultiLineText(self, "輸入框標題", "這是提示資訊\n\n請輸入地址:", "預設的\n我的地址是\n中國廣東廣州番禺") self.echo(value) def do_btn1_5(self, event): #('輸入:選項') #1為預設選中選專案,True/False 列表框是否可編輯。 items = ["Spring", "Summer", "Fall", "Winter"] value, ok = QInputDialog.getItem(self, "輸入框標題", "這是提示資訊\n\n請選擇季節:", items, 1, True) self.echo(value) # ===================================================================== def do_btn2_1(self, event): #('訊息:資訊') reply = QMessageBox.information(self, "訊息框標題", "這是一條訊息。", QMessageBox.Yes | QMessageBox.No) self.echo(reply) def do_btn2_2(self, event): #('訊息:問答') reply = QMessageBox.question(self, "訊息框標題", "這是一條問答嗎?", QMessageBox.Yes | QMessageBox.No) self.echo(reply) def do_btn2_3(self, event): #('訊息:警告') reply = QMessageBox.warning(self, "訊息框標題", "這是一條警告!", QMessageBox.Yes | QMessageBox.No) self.echo(reply) def do_btn2_4(self, event): #('訊息:危險') reply = QMessageBox.ctitical(self, "訊息框標題", "危險!程式即將強制退出!!!\n\n這個按鈕再也點不開。", QMessageBox.Yes | QMessageBox.No) self.echo(reply) def do_btn2_5(self, event): #('訊息:關於') reply = QMessageBox.about(self, "訊息框標題", "這是關於軟體的說明。。。", QMessageBox.Yes | QMessageBox.No) self.echo(reply) # ===================================================================== def do_btn3_1(self, event): #('檔案:資料夾') dir = QFileDialog.getExistingDirectory(self, "選取資料夾", "C:/") # 起始路徑 self.echo(dir) def do_btn3_2(self, event): #('檔案:單檔案') file_, filetype = QFileDialog.getOpenFileName(self, "選取檔案", "C:/", "All Files (*);;Text Files (*.txt)") #設定副檔名過濾,注意用雙分號間隔 self.echo(file_) def do_btn3_3(self, event): #('檔案:多檔案') files, ok = QFileDialog.getOpenFileNames(self, "多檔案選擇", "C:/", "All Files (*);;Text Files (*.txt)") self.echo(files) def do_btn3_4(self, event): #('檔案:儲存') file_, ok = QFileDialog.getSaveFileName(self, "檔案儲存", "C:/", "All Files (*);;Text Files (*.txt)") self.echo(file_) def do_btn3_5(self, event): #('檔案:另存為') file_, ok = QFileDialog.getSaveFileName(self, "檔案另存為", "C:/", "All Files (*);;Text Files (*.txt)") self.echo(file_) # ===================================================================== def do_btn4_1(self, event): #('顏色') color = QColorDialog.getColor(Qt.blue, self, "Select Color") self.echo(color) def do_btn4_2(self, event): #('字型') font, ok = QFontDialog.getFont() self.echo(font) def do_btn4_3(self, event): #('自定義') self.window2.show()class MyWindow2(QWidget): '''自定義視窗''' # 知識點: # 1.為了得到返回值用到了自定義的訊號/槽 # 2.為了顯示動態數字,使用了計時器 # 3.為了不讓介面不失去響應,使用了執行緒 have_closed_signal = pyqtSignal(int) # 〇自定義訊號(int型別) def __init__(self): super().__init__() self.sec = 0 self.setWindowTitle('自定義視窗') self.resize(200,150) self.lcd = QLCDNumber(18, self) btn1 = QPushButton(self, text="測試") btn2 = QPushButton(self, text="關閉") layout = QVBoxLayout(self) layout.addWidget(self.lcd) layout.addWidget(btn1) layout.addWidget(btn2) self.timer = QTimer() self.workThread = WorkThread() self.timer.timeout.connect(self.update) #每次計時結束,觸發update btn1.clicked.connect(self.startTimer) btn2.clicked.connect(self.before_close) # ① 去到關閉前的處理 def before_close(self, event): self.have_closed_signal.emit(self.lcd.value()) # 傳送訊號,帶引數 888 self.close() # 然後視窗關閉 def update(self): self.sec += 1 self.lcd.display(self.sec) #LED顯示數字+1 def startTimer(self): self.timer.start(1000) #計時器每秒計數 self.workThread.start() #計時開始 self.workThread.trigger.connect(self.stopTimer) #當獲得迴圈完畢的訊號時,停止計數 def stopTimer(self): self.timer.stop() self.sec = 0 #print("執行結束用時", self.lcd.value()) class WorkThread(QThread): trigger = pyqtSignal() def __int__(self): super().__init__() def run(self): for i in range(203300030): pass self.trigger.emit() #迴圈完畢後發出訊號 if __name__=="__main__": import sys app = QApplication(sys.argv) win = MyWindow() win.show() sys.exit(app.exec_())
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