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Python-监听并自动保存剪贴板图片到临时目录

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发表于 2021-1-16 11:27 |只看该作者 |倒序浏览

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#include <iostream>
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#include <Windows.h>
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extern "C" {
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__declspec(dllexport) BOOL SaveBmp(HBITMAP hBitmap, const wchar_t* FileName);8 q# g# |$ b% ?( f
}
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BOOL SaveBmp(HBITMAP hBitmap, const wchar_t* FileName)
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{
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//设备描述表
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HDC hDC;
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//当前分辨率下每象素所占字节数
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int iBits;
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//位图中每象素所占字节数
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WORD wBitCount;+ d$ f! }7 T# k( y
//定义调色板大小，位图中像素字节大小，位图文件大小，写入文件字节数 % x& Z) [# o9 e$ x7 p% I
DWORD dwPaletteSize = 0, dwBmBitsSize = 0, dwDIBSize = 0, dwWritten = 0;
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//位图属性结构 ' I4 r. Q! D$ z- u! R2 o/ J. t2 Q4 `7 F
BITMAP Bitmap;7 \- r- r5 Y+ B
//位图文件头结构
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BITMAPFILEHEADER bmfHdr;% {* i4 P\" R: j7 q
//位图信息头结构 9 ~' ?# C; I j4 g
BITMAPINFOHEADER bi;
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//指向位图信息头结构
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LPBITMAPINFOHEADER lpbi;
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//定义文件，分配内存句柄，调色板句柄 6 S, T4 | D( l) p$ C6 n
HANDLE fh, hDib, hPal, hOldPal = NULL;3 P4 B\" m9 j& j1 K4 V1 }
//计算位图文件每个像素所占字节数
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hDC = CreateDC(L"DISPLAY", NULL, NULL, NULL);
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iBits = GetDeviceCaps(hDC, BITSPIXEL) * GetDeviceCaps(hDC, PLANES);
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DeleteDC(hDC);# Y8 i W) o* F o- g* U H
if (iBits <= 1) wBitCount = 1;
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else if (iBits <= 4) wBitCount = 4;
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else if (iBits <= 8) wBitCount = 8; d; {6 n9 o8 k4 f, J
else wBitCount = 24;\" N2 L$ N# \& a+ H. C3 L
GetObject(hBitmap, sizeof(Bitmap), (LPSTR)&Bitmap);4 h9 A w q7 z. Y\" U
bi.biSize = sizeof(BITMAPINFOHEADER);
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bi.biWidth = Bitmap.bmWidth;6 O6 b+ y5 V# q5 g, y8 ^
bi.biHeight = Bitmap.bmHeight;% `7 [ r4 N, [0 l: d7 r2 }3 ^
bi.biPlanes = 1;4 G/ L6 g& T q# z1 M) D% ?: R
bi.biBitCount = wBitCount;
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bi.biCompression = BI_RGB;
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bi.biSizeImage = 0;
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bi.biXPelsPerMeter = 0;
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bi.biYPelsPerMeter = 0;
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bi.biClrImportant = 0;
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bi.biClrUsed = 0;. T4 G ~( a5 D. J- Y/ l
dwBmBitsSize = ((Bitmap.bmWidth * wBitCount + 31) / 32) * 4 * Bitmap.bmHeight;
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//为位图内容分配内存
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hDib = GlobalAlloc(GHND, dwBmBitsSize + dwPaletteSize + sizeof(BITMAPINFOHEADER));1 H$ A: P. n+ C& `3 J* Z! n, s
lpbi = (LPBITMAPINFOHEADER)GlobalLock(hDib);
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*lpbi = bi;9 W! o/ e9 O0 s1 }9 a& P9 s0 f4 l
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// 处理调色板
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hPal = GetStockObject(DEFAULT_PALETTE);* A+ h o) E8 W/ Y% ^, E
if (hPal)) e H- m. |( S
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hDC = ::GetDC(NULL);
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hOldPal = ::SelectPalette(hDC, (HPALETTE)hPal, FALSE);
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RealizePalette(hDC);
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// 获取该调色板下新的像素值
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GetDIBits(hDC, hBitmap, 0, (UINT)Bitmap.bmHeight, (LPSTR)lpbi + sizeof(BITMAPINFOHEADER) + dwPaletteSize, (BITMAPINFO*)lpbi, DIB_RGB_COLORS);
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//恢复调色板 ) l# C/ S2 S- r6 `) H7 X& i. s+ T9 y
if (hOldPal)
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::SelectPalette(hDC, (HPALETTE)hOldPal, TRUE);
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RealizePalette(hDC);
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::ReleaseDC(NULL, hDC);
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//创建位图文件
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fh = CreateFile(FileName, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,1 W* H% |( `\" D& p
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, NULL); e9 }; V/ B/ P
if (fh == INVALID_HANDLE_VALUE) return FALSE;9 R. T\" O: @) p: y7 Q3 }
// 设置位图文件头 8 r9 E. \4 M$ W/ T
bmfHdr.bfType = 0x4D42; // "BM" ) j! d( t% r- _& Z% ~+ E
dwDIBSize = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER) + dwPaletteSize + dwBmBitsSize;
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bmfHdr.bfSize = dwDIBSize;' N4 H; }0 o0 _* w/ A& R6 p
bmfHdr.bfReserved1 = 0;
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bmfHdr.bfReserved2 = 0;
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bmfHdr.bfOffBits = (DWORD)sizeof(BITMAPFILEHEADER) + (DWORD)sizeof(BITMAPINFOHEADER) + dwPaletteSize;
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// 写入位图文件头
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WriteFile(fh, (LPSTR)&bmfHdr, sizeof(BITMAPFILEHEADER), &dwWritten, NULL);
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// 写入位图文件其余内容 ; C9 E5 G1 Q7 |/ N) w! v2 }& L
WriteFile(fh, (LPSTR)lpbi, dwDIBSize, &dwWritten, NULL);' i) Q9 N: @4 o/ X8 s
//清除 . B( R2 B) ~ b. g+ x9 {
GlobalUnlock(hDib);
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GlobalFree(hDib); H3 A. I% M$ h/ b) a: L P& C
CloseHandle(fh);( B9 |( g6 \& T$ l8 ~2 d, k4 a9 o5 p
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return TRUE;
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}
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复制代码

#!/usr/bin/python
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# -*- coding: utf-8 -*-4 u A8 p6 f' Y1 d
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from ctypes import windll
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from win32clipboard import *
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import tempfile! Z+ i4 J5 [( U! b8 U
import os
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from time import sleep* _/ h2 V- U: e5 a' {1 v; Y
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if __name__ == '__main__':
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while True:
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try:
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OpenClipboard()
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except Exception:
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print("拒绝访问！")
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break# C- _$ k- `1 n4 ?$ l
else:+ k( C\" F( j! c
if IsClipboardFormatAvailable(CF_BITMAP):8 }; d% l- q W5 _8 m( N p
try:
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dll = windll.LoadLibrary("./SaveBmp.dll")! `\" ^, B& ~7 u% R& D8 Y
except FileNotFoundError:
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print("依赖库不存在~")
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else:, t/ s. ~7 P, r3 R1 K) M9 w4 w: ?9 U8 \
tmpfd, tempfilename = tempfile.mkstemp(suffix='.bmp')
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os.close(tmpfd)
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hbitmap = GetClipboardData(CF_BITMAP)
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dll.SaveBmp(hbitmap, tempfilename)
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print(tempfilename)
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EmptyClipboard()
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CloseClipboard()
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sleep(0.2), i% n) D\" ?) Y B' T- d\" d