查看: 3366|回复: 0

Python-监听并自动保存剪贴板图片到临时目录

字体大小: 正常放大

檀俾九

7 主题	3 听众	10 积分

升级 5.26%

该用户从未签到

自我介绍: 我本名为我，那就是我

电梯直达

1^#

发表于 2021-1-16 11:27 |只看该作者 |正序浏览

|招呼Ta 关注Ta

#include <iostream>' p; @$ e. k7 E0 \ G5 Q' L; {
#include <Windows.h>* d1 t* J$ B# u
5 o+ b: Y* L1 c
extern "C" {; ~6 f8 C! z/ [2 l
__declspec(dllexport) BOOL SaveBmp(HBITMAP hBitmap, const wchar_t* FileName);
0 _ |9 p! `- T# F$ F
}
, x5 n7 l( i9 j0 R
, a6 ^' A: O; K$ L7 @0 a1 H
BOOL SaveBmp(HBITMAP hBitmap, const wchar_t* FileName)
\" @- O7 w\" i9 j% j* ?) v' E
{7 @3 | y3 e+ l7 g3 L- i4 W
//设备描述表. ?% t: ~% }7 u$ |
HDC hDC;: d/ d# ~2 }6 Z, N& L3 [+ Q' U
//当前分辨率下每象素所占字节数8 P0 {$ t `/ Z
int iBits;
' Z% F6 u2 K% s6 Y6 G/ L& n
//位图中每象素所占字节数5 a/ T# q# @4 ^ X9 G8 R
WORD wBitCount;
- C6 i! N- T% r$ B! c C; A
//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& P) Q( I5 u\" V
DWORD dwPaletteSize = 0, dwBmBitsSize = 0, dwDIBSize = 0, dwWritten = 0;\" i, @( D5 a\" M' W- g+ B# u- W
//位图属性结构 0 Z F\" |9 H K5 y: \4 {0 X$ i* t
BITMAP Bitmap;
6 R3 L2 O& H, d# w
//位图文件头结构3 i/ }& N1 n; J4 r. b* O
BITMAPFILEHEADER bmfHdr;9 L6 r\" w8 w% L2 N
//位图信息头结构 * m( F+ g3 z' [8 X
BITMAPINFOHEADER bi;
/ g& t8 F! A j
//指向位图信息头结构
# R* S/ R' r1 V
LPBITMAPINFOHEADER lpbi;
7 p& i; k: K4 D
//定义文件，分配内存句柄，调色板句柄
) }- v: A4 d/ q0 L1 e\" ~
HANDLE fh, hDib, hPal, hOldPal = NULL;
5 ?7 r/ x& E* f( {
//计算位图文件每个像素所占字节数
d0 ^5 H- C\" q/ Z8 p' u
hDC = CreateDC(L"DISPLAY", NULL, NULL, NULL);
5 `6 o\" g3 u0 m, D7 g( y
iBits = GetDeviceCaps(hDC, BITSPIXEL) * GetDeviceCaps(hDC, PLANES);
2 [- R' p9 S6 V6 a% j- Y
DeleteDC(hDC);- u* c\" s9 E7 E; x1 U7 ]
if (iBits <= 1) wBitCount = 1;7 r2 j% A2 Y3 X& @\" T4 p3 ^
else if (iBits <= 4) wBitCount = 4;% F/ w6 @- X1 I$ R( E
else if (iBits <= 8) wBitCount = 8;! B: h' ~; W9 J2 w0 G2 t
else wBitCount = 24;
* y* `, {- `. Q: V
GetObject(hBitmap, sizeof(Bitmap), (LPSTR)&Bitmap);
) I0 ~8 G* y9 i9 k* N9 V% F
bi.biSize = sizeof(BITMAPINFOHEADER);
- T4 e# N5 i* o/ c
bi.biWidth = Bitmap.bmWidth;1 v ~# J8 Q/ b9 R6 G# D) m& k) y
bi.biHeight = Bitmap.bmHeight;/ b* [% _4 r' H/ G: `
bi.biPlanes = 1;
- W! x0 ~0 L( ~( z) A% H
bi.biBitCount = wBitCount;
& w! e. X7 X1 j9 p0 X4 X
bi.biCompression = BI_RGB;/ J- R. V+ p. ~
bi.biSizeImage = 0;
1 M- r& a3 z\" t+ F6 n4 W
bi.biXPelsPerMeter = 0;
% W' {: x8 b& C- z4 i
bi.biYPelsPerMeter = 0;$ M# Q\" `6 F, Q9 @3 @
bi.biClrImportant = 0;! Y8 i6 [ t\" [' K. `( v
bi.biClrUsed = 0;
2 q- P: t$ u7 U* p0 `8 n+ i% z
dwBmBitsSize = ((Bitmap.bmWidth * wBitCount + 31) / 32) * 4 * Bitmap.bmHeight;
\" Y: c& T) e2 P, Y! @
//为位图内容分配内存
# V, {. f8 O; \% Z7 V7 S1 k
hDib = GlobalAlloc(GHND, dwBmBitsSize + dwPaletteSize + sizeof(BITMAPINFOHEADER));0 R0 e a7 i# J# p8 \' C) L
lpbi = (LPBITMAPINFOHEADER)GlobalLock(hDib);. I\" N/ E) H5 B5 [7 O, ~/ \) s
*lpbi = bi;2 n0 U: C1 Y5 v! V
) ^/ t) c/ K3 T) L5 n* a. p0 q) N
// 处理调色板
! @6 m; P! M1 }: p$ H
hPal = GetStockObject(DEFAULT_PALETTE);
8 ~! i% f5 ?5 F; V/ M' ^
if (hPal)
+ f0 t9 }8 i$ N0 P7 Y/ u8 e6 A
{
+ n& H$ P\" }1 m; m& z* a
hDC = ::GetDC(NULL);- T2 D\" W3 M$ I4 ]! q5 {5 U
hOldPal = ::SelectPalette(hDC, (HPALETTE)hPal, FALSE);\" O1 `! G$ T' A( g9 h
RealizePalette(hDC);$ L& { G) u9 W! P
}5 L4 |. C& H2 h, q+ b5 P
// 获取该调色板下新的像素值
5 ]1 X$ S) m! D2 Z* ]
GetDIBits(hDC, hBitmap, 0, (UINT)Bitmap.bmHeight, (LPSTR)lpbi + sizeof(BITMAPINFOHEADER) + dwPaletteSize, (BITMAPINFO*)lpbi, DIB_RGB_COLORS);
, r% P' R' H) R8 c9 L) [
//恢复调色板
1 |5 v; p( A F: g
if (hOldPal)
+ d, O- |: i5 A1 ?
{$ `: ?: n- `( d
::SelectPalette(hDC, (HPALETTE)hOldPal, TRUE);
0 l3 S5 p s6 y6 T& P: |% r- {( c, q
RealizePalette(hDC);
3 h( u; X1 f5 f$ Z
::ReleaseDC(NULL, hDC);1 j( j$ Y$ P0 d5 y
}1 Z) C( E+ R# v8 d$ y X; Q+ V
//创建位图文件
) O. e7 x1 N8 C7 l+ z' \7 v3 l. \+ U# p
fh = CreateFile(FileName, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,6 {. C' [: P1 |2 [
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, NULL);& u0 C7 X4 l$ \( K2 y
if (fh == INVALID_HANDLE_VALUE) return FALSE;/ w\" w. h2 b5 |
// 设置位图文件头 ' {( b9 F7 s2 P- z3 e& k( k9 c
bmfHdr.bfType = 0x4D42; // "BM" ' w# ~2 w7 a7 C2 W
dwDIBSize = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER) + dwPaletteSize + dwBmBitsSize;
& x1 k+ q5 g/ p
bmfHdr.bfSize = dwDIBSize;- J# b0 f: k% O# U, f
bmfHdr.bfReserved1 = 0;
. i0 r' r6 T6 R+ K N' S- A
bmfHdr.bfReserved2 = 0;( ^/ |7 v: _* C
bmfHdr.bfOffBits = (DWORD)sizeof(BITMAPFILEHEADER) + (DWORD)sizeof(BITMAPINFOHEADER) + dwPaletteSize;
0 v; S1 }+ X$ N% u
// 写入位图文件头 + O% ]/ E) P. ^+ O' M- {
WriteFile(fh, (LPSTR)&bmfHdr, sizeof(BITMAPFILEHEADER), &dwWritten, NULL);; Z5 L3 E9 F\" V
// 写入位图文件其余内容
1 Z- H# s9 C- f& b
WriteFile(fh, (LPSTR)lpbi, dwDIBSize, &dwWritten, NULL);0 J! @+ n0 J0 G+ y7 l
//清除 9 z& R! f! Y2 a+ x% B6 w! v5 k, X
GlobalUnlock(hDib);
& n- t2 T; ], d i% [$ [# E
GlobalFree(hDib);
. u: N, q\" A( p# K0 ] u! i& X
CloseHandle(fh);& G% _0 G% Z3 [ r+ A
\" Z# \( [9 Q- N1 }) i9 v8 E
return TRUE;
3 `+ f8 Y3 A: B' i. \4 C
}
\" `( q( n3 }; l\" O3 N