Python窗體操作函數


實現了一個window下對窗體操作的類,實現的功能如:移動窗體、獲取窗體位置和大小、截取窗體圖片、坐標轉換等。

直接上代碼:

# coding=utf-8
import win32con
import win32api
import win32gui
import win32ui
from ctypes import *
from ctypes import wintypes

GetForegroundWindow = windll.user32.GetForegroundWindow
GetWindowRect = windll.user32.GetWindowRect
SetForegroundWindow = windll.user32.SetForegroundWindow
GetWindowText = windll.user32.GetWindowTextA
MoveWindow = windll.user32.MoveWindow
EnumWindows = windll.user32.EnumWindows

class RECT(Structure):
    _fields_ = [
        ('left', c_long),
        ('top', c_long),
        ('right', c_long),
        ('bottom', c_long)
    ]


class POINT(Structure):
    _fields_ = [
        ('x', c_long),
        ('y', c_long),
    ]


class FormControl(object):
    def __init__(self):
        self.win_hd = None
        self.win_title = ''

    def bindActiveWindow(self):
        """
        函數功能:獲取當前焦點所在窗口
        """
        self.win_hd = GetForegroundWindow()

    def bindWindowByName(self, win_name):
        """
        函數功能:根據窗體名獲取窗體句柄
        """
        self.win_title = win_name
        pro_fun_type = CFUNCTYPE(c_bool, c_int, c_long)
        pro_fun_p = pro_fun_type(self.EnumWindowsProc)
        EnumWindows(pro_fun_p, None)

    def getWinRect(self):
        """
        函數功能:獲取窗體的位置和大小
        """
        if self.win_hd is None:
            return None
        rect=RECT()
        GetWindowRect(self.win_hd,byref(rect))
        return rect

    def toScreenPos(self, x,y):
        """
        函數功能:將窗體內部坐標轉換為相對於顯示屏的絕對坐標
        """
        #未指定窗口,則結束函數
        if self.win_hd is None:
            return None
        rect=self.getWinRect()
        #指定的坐標不在窗體內,則結束函數
        if x < 0 or y < 0 or x > rect.right or y > rect.bottom:
            return None
        pos = POINT()
        pos.x = x + rect.left
        pos.y = y + rect.top
        return pos

    def toWindowPos(self,x,y):
        """
        函數功能:將絕對坐標轉換成相對於窗體內部坐標
        """
        if self.win_hd is None:
            return None
        rect = self.getWinRect()
        pos = POINT()
        pos.x = x - rect.left
        pos.y = y - rect.top
        # 指定的坐標不在窗體內,則結束函數
        if pos.x < 0 or pos.y < 0 or pos.x > rect.right or pos.y > rect.bottom:
            return None
        return pos

    def WindowActive(self):
        """
        函數功能:將窗體置前
        """
        if self.win_hd is None:
            return None
        SetForegroundWindow(self.win_hd)

    def getHWND(self):
        return self.win_hd

    def getWinTitle(self):
        """
        函數功能:獲取窗體的標題
        """
        if self.win_hd is None:
            return None
        buffer = create_string_buffer(255,'\0')
        GetWindowText(self.win_hd,buffer,255)
        value=buffer.value.decode('gbk')
        return value

    def MoveTo(self,x,y):
        """
        函數功能:移動窗體到指定坐標位置
        """
        if self.win_hd is None:
            return None
        rect = self.getWinRect()
        MoveWindow(self.win_hd,x,y,rect.right-rect.left,rect.bottom-rect.top,True)

    def WinCapture(self,path,x,y,w,h):
        """
        函數功能:抓取窗體截圖,並保存到文件
        參    數:path 保存路徑
                 x 截取起始x坐標(窗體內相對坐標)
                 y 截取起始y坐標(窗體內相對坐標)
                 w 截取寬度,為0則取窗體寬度
                 h 截取長度,為0則取窗體高度
        """
        if self.win_hd is None:
            return None
        rect = self.getWinRect()
        if w == 0:
            w = rect.right - rect.left
        if h == 0:
            h = rect.bottom - rect.top
        if x < 0 or y < 0 or (x+w) > rect.right or (y+h) > rect.bottom:
            return None
        self.Capture(self.win_hd,path,x,y,w,h,0)

    def WinCapture_Mem(self,x,y,w,h):
        """
        函數功能:抓取窗體截圖,並返回圖像內存數據
        參    數:
                 x 截取起始x坐標(窗體內相對坐標)
                 y 截取起始y坐標(窗體內相對坐標)
                 w 截取寬度,為0則取窗體寬度
                 h 截取長度,為0則取窗體高度
        """
        if self.win_hd is None:
            return None
        rect = self.getWinRect()
        if w == 0:
            w = rect.right - rect.left
        if h == 0:
            h = rect.bottom - rect.top
        if x < 0 or y < 0 or (x+w) > rect.right or (y+h) > rect.bottom:
            return None
        return self.Capture(self.win_hd,'',x,y,w,h,1)

    def Capture(self, hd, path, x, y, w, h, mode):
        """
        函數功能:截圖
        參    數:hd 截取的窗口句柄
                path 保存路徑
                 x 截取起始x坐標(窗體內相對坐標)
                 y 截取起始y坐標(窗體內相對坐標)
                 w 截取寬度,為0則取窗體寬度
                 h 截取長度,為0則取窗體高度
                 mode 保存模式 0:保存為圖片,1:返回圖像字節數據
        """
        # 根據窗口句柄獲取窗口的設備上下文
        hwndDC = win32gui.GetWindowDC(self.win_hd)
        # 根據窗口的DC獲取memDC
        srcdc = win32ui.CreateDCFromHandle(hwndDC)
        # memDC創建可兼容的DC
        saveDC = srcdc.CreateCompatibleDC()
        # 創建bigmap准備保存圖片
        saveBitMap = win32ui.CreateBitmap()
        # 為bitmap開辟空間
        saveBitMap.CreateCompatibleBitmap(srcdc, w, h)
        # 高度saveDC,將截圖保存到saveBitmap中
        saveDC.SelectObject(saveBitMap)
        # 截取從左上角(0,0)長寬為(w,h)的圖片
        saveDC.BitBlt((0, 0), (w, h), srcdc, (x, y), win32con.SRCCOPY)
        if mode == 0:
            saveBitMap.SaveBitmapFile(saveDC, path)
        else:
            signedIntsArray = saveBitMap.GetBitmapBits(True)
            return signedIntsArray
        # 釋放內存
        srcdc.DeleteDC()
        saveDC.DeleteDC()
        win32gui.ReleaseDC(self.win_hd,hwndDC)
        win32gui.DeleteObject(saveBitMap.GetHandle())


    def EnumWindowsProc(self,hwnd, lParam):
        buffer = create_string_buffer(255,'\0')
        GetWindowText(hwnd,buffer,255)
        value=buffer.value.decode('gbk')
        if value == self.win_title:
            self.win_hd = hwnd
            print(self.win_hd)
            return  False
        return True

 

測試代碼:

import FormApi
import time




if __name__== '__main__':
    time.sleep(2)
    form=FormApi.FormControl()
    form.bindActiveWindow()
    rect=form.getWinRect()
    print("坐標:(x:%d,y:%d),大小:(width:%d,height:%d)" % (rect.left,rect.top,rect.right-rect.left,rect.bottom-rect.top))
    time.sleep(2)
    form.WinCapture(r'c:\1.bmp',0,0,200,200)

 


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