在Windows操作系统中,当用户按下"PrintScreen"按钮后,Windows自动将当前屏幕的图像拷贝到系统剪贴板中,这时可以通过"画笔"这个小程序将剪贴板中的内容保存成图像文件,可以看出,如果需要将当前屏幕保存下来还是比较麻烦的,能否可以自己编写一个应用程序,自动将当前屏幕的内容保存到一个图像文件中去呢?这个答案是肯定的,本实例应用程序就是利用通用的热键管理DLL库实现的热键功能,在收到热键通知后截取屏幕的内容并保存到bmp文件中。例如我们设置图片保存路径为c:\,热键为F9 + Control,然后按Change按钮设置好热键,那么当我们按下CTRL+F9后,当前界面将以BMP图像文件的格式被保存在C:\目录下。程序编译运行后的界面效果如图一所示:
SE)nD@:
!n<o)DsZR 一、实现方法
m[:K"lZ
]2 ]-:6T0JuS 热键管理DLL实际上是一个键盘钩子,由它来监视系统的键盘事件。如果有和程序登记符合的按键组合就通知该程序的窗口。为了应用方便,本实例把它做成了一个标准的管理库来为其它的程序通过热键服务,它有两个输出函数:AddHotkey()和DeleteHotkey(),程序只需要调用这两个函数就可以了,如果编译之后不用改变热键,则只需要AddHotkey就可以了。DLL中的所有的全局变量都放在一个共享段中,定义如下:
"|t!7hC sn"fK=,#g #pragma data_seg("shareddata")
{<K=*rrZ HHOOK hHook =NULL; //钩子句柄
9x?'} UINT nHookCount =0; //挂接的程序数目
8sg|MWSU static UCHAR HotKey[MAX_KEY] = {0}; //热键虚拟键码
?:igumeYX static UCHAR HotKeyMask[MAX_KEY] = {0}; //组合掩码, control=4,alt=2,shift=1
/e1(?
20 static HWND hCallWnd[MAX_KEY] = {0}; //window handle associated with hotkey
oa`#RC8N static int KeyCount =0;
{DwIjy31T static UCHAR MaskBits =0; //00000 Ctrl=4 & Alt=2 & Shift=1
m#\[m<F #pragma data_seg()
,Dp0fauJ !9]d|8! 关于共享段,有几点重要的说明:一是必须在链接选项里指定该段为共享:一种方法是在project->settings->link->object/library中加上/section:shareddata,rws;第二种方法是在def文件的sections里加上一句shareddata read write shared;第三种指定共享段的方法在程序里加上一句#pragma comment(linker,"section:shareddata,rws")。二是所有的变量必须初始化,否则链接程序会把它放到普通数据段。三是如果不初始化变量,需要在段外用"__declspec(allocate("shareddata")) 变量类型 变量名"的方式定义。
,lm=M5b Z\ )C_p\- DLL中的两个输出函数分别用来添加/删除热键,函数代码如下:
%;|0 d1]i,C~Y BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR
H0>yi[2f cKey,UCHAR cMask)
f~ZEdq8 {
hw=GR_, BOOL bAdded=FALSE;
89HsPB1"t for(int index=0;index<MAX_KEY;index++){
#jA) >z\Q^ if(hCallWnd[index]==0){
1e}8LH7 hCallWnd[index]=hWnd;
0<.RA%dj HotKey[index]=cKey;
"0Q1qZ HotKeyMask[index]=cMask;
O/b+CSS1 bAdded=TRUE;
C:i|-te KeyCount++;
Y#HI;Y^RP break;
|V|+lx'sc }
-RMi8{ }
Ef@,hX return bAdded;
Ck'aHe22' }
hXB|g[zT //删除热键
pC(sS0J BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
;ME)Og {
~OypE4./1 BOOL bRemoved=FALSE;
QyGnDomQ for(int index=0;index<MAX_KEY;index++){
;Vu5p#,O<M if(hCallWnd[index]==hWnd){
RMP9y$~3pU if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
(9C<K< hCallWnd[index]=NULL;
Kat&U19YH HotKey[index]=0;
7L3ik;> HotKeyMask[index]=0;
;Ii1B{W bRemoved=TRUE;
_#C()Ro*P KeyCount--;
314=1JbL break;
KzO,*M }
Eu,`7iQ?( }
pqR\>d0 }
3BQ!qO17^d return bRemoved;
Q5a)}6-5 }
yI3kvh BRv x[u T
.n4TmF DLL中的钩子函数如下:
1^G{tlA- ,[!LCXp LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
DjLL|jF {
#hw>tA6 BOOL bProcessed=FALSE;
)r tomp:X if(HC_ACTION==nCode)
o:p
*_>& {
szmmu*F,U: if((lParam&0xc0000000)==0xc0000000){// 有键松开
dl~|Izm switch(wParam)
,wAz^cK| {
$}o
b,i^W case VK_MENU:
tTanW2C MaskBits&=~ALTBIT;
'LS z f/w break;
&
,hr8 case VK_CONTROL:
YY5!_k MaskBits&=~CTRLBIT;
y~
rXl break;
`T&jPA9eY case VK_SHIFT:
z(13~38+ MaskBits&=~SHIFTBIT;
wvby?MhPY break;
z rfUQO default: //judge the key and send message
O7G"sT1Dv break;
+-$Ko fnM }
h6D^G5i for(int index=0;index<MAX_KEY;index++){
BS1Ap if(hCallWnd[index]==NULL)
~bK9R0|< continue;
~d
>W?A if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
gVR@&bi7 {
t^tmz PWA SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
gm"#:< ) bProcessed=TRUE;
b #fTAC;< }
Ea $aUORm }
(eWPis[ }
23]Y<->Eu< else if((lParam&0xc000ffff)==1){ //有键按下
ipE]}0q switch(wParam)
<wd]D@l7r {
+9;2xya2 case VK_MENU:
fS&6 MaskBits|=ALTBIT;
X[yNFW}S2W break;
na+d;h*~y case VK_CONTROL:
9i q"" MaskBits|=CTRLBIT;
#]Y>KX2HG break;
mN_Z7n;^eh case VK_SHIFT:
c3TKl/ MaskBits|=SHIFTBIT;
G&f8n break;
4Y \wnwI default: //judge the key and send message
<n"C, break;
Nf41ZT~ }
""iaGH+Cxw for(int index=0;index<MAX_KEY;index++){
Vr.Y/3N&' if(hCallWnd[index]==NULL)
iEyeX0nm continue;
Cfu=u *u if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
qoMfSz"( {
V@-)\RZm SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
;3eKqr0 bProcessed=TRUE;
}f}}A= }
%kshQ%P)? }
Q>< 0[EPj3 }
[{u(C!7L` if(!bProcessed){ //一般按键事件,为监视键盘的程序留出余地
*XOJnyC_H for(int index=0;index<MAX_KEY;index++){
q'[}9e`Q if(hCallWnd[index]==NULL)
rh*sbZ68>E continue;
5Qwh(C^H if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
0pb'\lA SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
U&Wwyu:4i
//lParam的意义可看MSDN中WM_KEYDOWN部分
9p* gU[ }
<6TT)t<h }
0fXLcal }
g^Yl TB return CallNextHookEx( hHook, nCode, wParam, lParam );
ZzGahtx)Y }
{=2DqkTD rf:XRJ<4 抓图程序是一个基于对话框的程序,它在建立对话框的时候调用前面的DLL,登记热键,因此需要将hook.lib添加到工程里,在程序里给出两个DLL函数的定义,也可以写个头文件,再包含进来以下代码:
38ES($ eDI=nSo BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
eYUr-rN+)z BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
2|iV,uJ& r;>+)**@vl 为了添加应用程序对热键通知事件的响应,程序中用的办法是重载WindowProc()函数,该函数代码如下:
Xr63?N BAj-akc f LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
[jdFA<Is {
:,12")N if(message==WM_HOTKEY&&lParam==WM_KEYDOWN)
]
Wy) {
Psur a$: //lParam表示是按下还是松开,如果有多个热键,由wParam来区分
u9woEe? SaveBmp();
Jq.lT(E8D return FALSE;
O=cxNy-I }
u6V/JI}g …… //其它处理及默认处理
s'aip5P }
wFh8?Z3u_ Am0{8
' 'nQVj 将屏幕图像保存到BMP文件中的任务是由函数SaveBmp()来完成的,具体实现参见代码部分。另外为了顺利实现屏幕抓图,程序中还实现了"托盘"功能,由于这一部分本书在实例中已经专门介绍过了,所以不再赘述,读者朋友可以参考相关实例。
7tM9u5FF sZWaV4 最后需要提醒读者朋友们注意的是,源程序的编译与使用时要先编译hook.dll并将其放在系统目录(win2000/NT是system32,98/ME是system),然后编译对话框程序运行即可。
D%mXA70 63|+2-E2Q 二、编程步骤
YpAg |'ln?D:& 1、 启动Visual C++,生成一个DLL项目和一个基于对话框的应用程序项目,并将两个项目分别命名为"Hook"和"Capture";
n6d9\ kv,%(en] 2、 在"Hook"项目中导出AddHotkey()、DeleteHotkey()函数;
WL,&-*JAW rB~W Iu 3、 在"Capture"项目中按照图一所示设置对话框的界面,具体设置参见代码部分;
j:T/ iH!YF []R? ViG 4、 使用Class Wizard在"Capture"项目中添加按钮的鼠标单击消息响应函数,并重载对话框的WindowProc()函数;
/M~!sPW&? N /$`:8" 5、 添加代码,编译运行程序。
c}*2$1 %D$,;{ew 三、程序代码
V-I(WzR9y '3]p29v{ ///////////////////////////////////// Hook.h : main header file for the HOOK DLL
iB0WEj[? #if !defined(AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_)
3nZ9m #define AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_
EFuvp8^y #if _MSC_VER > 1000
W!blAkM%i #pragma once
uJHu>M}~ #endif // _MSC_VER > 1000
X:a`B(@S #ifndef __AFXWIN_H__
H7Uli]e3 #error include 'stdafx.h' before including this file for PCH
)Au6Nf
#endif
iqQUtE]E_ #include "resource.h" // main symbols
aV o;~h~ class CHookApp : public CWinApp
l.\re"Q {
q+KzIde|% public:
"LYh7:0s!k CHookApp();
,:fl?x.X // Overrides
07Gv* . // ClassWizard generated virtual function overrides
^,F;M`[ //{{AFX_VIRTUAL(CHookApp)
s](aNe2j public:
bPD`+:A_ virtual BOOL InitInstance();
8(.mt/MR virtual int ExitInstance();
R+q"_90_ //}}AFX_VIRTUAL
V}d9f2 //{{AFX_MSG(CHookApp)
v%k9M{ // NOTE - the ClassWizard will add and remove member functions here.
JXG"M#{ // DO NOT EDIT what you see in these blocks of generated code !
&zQ2M#{82 //}}AFX_MSG
<Llp\XcZ DECLARE_MESSAGE_MAP()
+')f6P;t>= };
Iz6y{E LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam, LPARAM lParam);
WwF~d+>|C BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
|py6pek| BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
uPYmHA}_/ BOOL InitHotkey();
gj\)CBOv BOOL UnInit();
q#Zs\PD #endif
ZvYLL{>}w j*e6vX //////////////////////////////////////// Hook.cpp : Defines the initialization routines for the DLL.
mNf8kwr #include "stdafx.h"
pME{jD
#include "hook.h"
ZKQ hbNT #include <windowsx.h>
bWl5(S` Z #ifdef _DEBUG
4L-:*b_v\ #define new DEBUG_NEW
L-pVltX #undef THIS_FILE
xvzr:pP static char THIS_FILE[] = __FILE__;
:+{ ? #endif
-U<Upn)2 #define MAX_KEY 100
6{[pou& #define CTRLBIT 0x04
O3N0YGhJ #define ALTBIT 0x02
I$Qs;- ( #define SHIFTBIT 0x01
5qg2Zc~ #pragma data_seg("shareddata")
+jg9$e " HHOOK hHook =NULL;
JOjoiA UINT nHookCount =0;
5Zmw} M static UCHAR HotKey[MAX_KEY] = {0}; //hotkey
oLWJm static UCHAR HotKeyMask[MAX_KEY] = {0}; //flag for hotkey, value is VK_CONTRL or VK_NEMU or VK_SHIFT
i{!T&8 static HWND hCallWnd[MAX_KEY] = {0}; //window associated with hotkey
xD&^j$Em static int KeyCount =0;
Lb{e,JH static UCHAR MaskBits =0; //00000 Ctrl Alt Shift
*Ype>x{ #pragma data_seg()
@)kO=E d HINSTANCE hins;
DjU9
uZT void VerifyWindow();
ELh8ltLY BEGIN_MESSAGE_MAP(CHookApp, CWinApp)
-",=G\XZ //{{AFX_MSG_MAP(CHookApp)
y%sroI('y // NOTE - the ClassWizard will add and remove mapping macros here.
{k4CEt; // DO NOT EDIT what you see in these blocks of generated code!
UA[,2MBp //}}AFX_MSG_MAP
Cv$
SJc END_MESSAGE_MAP()
9Rm/V5 f<+4rHT CHookApp::CHookApp()
bX.ja;; {
@i^~0A#q* // TODO: add construction code here,
p^(&qk?ut // Place all significant initialization in InitInstance
Hk>79}; }
2=?tJ2E ^:9$@+a CHookApp theApp;
0Io'bF LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
.nYUL> {
#jAqra._b BOOL bProcessed=FALSE;
pLMRwgzr if(HC_ACTION==nCode)
Ca%g_B0t {
kc/{[ME if((lParam&0xc0000000)==0xc0000000){// Key up
}M1sksk5 switch(wParam)
ZEYgK)^ {
|F.)zC5{ case VK_MENU:
7?B.0>$3>V MaskBits&=~ALTBIT;
o!:8nXw break;
>5R<;#8 case VK_CONTROL:
K^_i%~ MaskBits&=~CTRLBIT;
9]t[J_YM break;
BmHwu{n' case VK_SHIFT:
tO_H!kP MaskBits&=~SHIFTBIT;
+(uYwdcN break;
F}"] 92 default: //judge the key and send message
LqdY Qd51 break;
j)t+jcMUI }
& cNy for(int index=0;index<MAX_KEY;index++){
ZVeaTK4_
t if(hCallWnd[index]==NULL)
Zo KcJA continue;
~&\ f|% if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
a[lY S{ {
SI:U0gUc SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
9 Pw0m=4 bProcessed=TRUE;
1 T130L }
T[=S$n-' }
gyS+9)gY }
X(jVRr_m9 else if((lParam&0xc000ffff)==1){ //Key down
/ywD{* switch(wParam)
DmXcPJ[9 {
R),zl_d_ case VK_MENU:
.1 %T
W) MaskBits|=ALTBIT;
C"lJl k9g^ break;
g%u&Zkevx case VK_CONTROL:
56l@a{ MaskBits|=CTRLBIT;
" P)*FT break;
2oJb)CB case VK_SHIFT:
h7s;m MaskBits|=SHIFTBIT;
[ofqGwpDG break;
nW"q default: //judge the key and send message
y*{Zbz#{ break;
%gnM(pxl }
gX{loG for(int index=0;index<MAX_KEY;index++)
TpA\9N#$ {
fQLt=Lrp if(hCallWnd[index]==NULL)
,@m@S^ continue;
A`{y9@h( if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
s:00yQ {
c*d9'}E SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
fF*`'i=! bProcessed=TRUE;
=h(W4scgqX }
h;5LgAY|v }
iJnU% }
uP\lCqK, if(!bProcessed){
iqnJ~g for(int index=0;index<MAX_KEY;index++){
T]Nu) if(hCallWnd[index]==NULL)
]nhr+;of/- continue;
b;|55Y if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
KYJjwXT28W SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
K/ &?VIi`z }
ND<!4!R^ }
8@NH%zWBp }
:Q+5,v-c return CallNextHookEx( hHook, nCode, wParam, lParam );
e T'nl,e| }
Vtppuu$ >=iy2~Fz , BOOL InitHotkey()
4'KOpl
K {
[P|[vWO if(hHook!=NULL){
1_$xSrwcF nHookCount++;
nN$Y(2ZN return TRUE;
8Ry74|`=R }
5>6PH+Oq else
Iqs+r? hHook=SetWindowsHookEx(WH_KEYBOARD,(HOOKPROC)KeyboardProc,hins,0);
J/7R\;q`~o if(hHook!=NULL)
?=GXqbS" nHookCount++;
8+mH:O return (hHook!=NULL);
S'dV>m` }
6.t',LTB BOOL UnInit()
I2(zxq&2M\ {
3Rm#-T s if(nHookCount>1){
d2X[(3 nHookCount--;
[<`SfE return TRUE;
|%~+2m }
QrApxiw BOOL unhooked = UnhookWindowsHookEx(hHook);
zF4 [}* if(unhooked==TRUE){
,fEO>
i nHookCount=0;
Z -%(~ hHook=NULL;
61U<5:#l }
,2oF:H return unhooked;
R~bC,`Bh }
,n!vsIN a:~@CUD
>I BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
_w@qr\4i= {
"QoQ4r<| BOOL bAdded=FALSE;
jQU"Ved for(int index=0;index<MAX_KEY;index++){
K!D
o8| if(hCallWnd[index]==0){
yV)m"j hCallWnd[index]=hWnd;
:hGPTf HotKey[index]=cKey;
_wb0'xoK" HotKeyMask[index]=cMask;
*9ywXm&? bAdded=TRUE;
Ba\6?K KeyCount++;
3p?KU- break;
T+LJ*I4 }
7z_;t9Y }
R`F,aIJ] return bAdded;
`k\grr.J }
[NnauItI `SO|zz|' BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
8#R?]Uwq {
sqx`">R BOOL bRemoved=FALSE;
F#xa`*AP for(int index=0;index<MAX_KEY;index++){
Lw1T 4n if(hCallWnd[index]==hWnd){
4Z[V uQng if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
K[
.JlIP hCallWnd[index]=NULL;
,n2i@?NHZ HotKey[index]=0;
-#-p1^v} HotKeyMask[index]=0;
D j\e@?Y bRemoved=TRUE;
DjMf,wX-{ KeyCount--;
(Lh#`L?x break;
V+?]S }
GC8}X;((Y }
y(
r1I[W' }
Q5S,{ ZeT return bRemoved;
&PcyKpyd }
ashcvn~z fJjgq)9 void VerifyWindow()
`h;k2Se5 {
lC97_T for(int i=0;i<MAX_KEY;i++){
dAJ,x
=` if(hCallWnd
!=NULL){ '+<(;2Z
vL
if(!IsWindow(hCallWnd)){ Vbh6HqAHxJ
hCallWnd=NULL; `,wu}F85
HotKey=0; j:5%ppIY
HotKeyMask=0; ,1Qd\8N9
KeyCount--; 31Cq22"
} i5hD#
} G@S&1=nj3
} ~;-9X|
} U7&x rif
"rXOsX\;
BOOL CHookApp::InitInstance() ;??ohA"{5
{ NGjdG=,
AFX_MANAGE_STATE(AfxGetStaticModuleState()); jW*1E*"
hins=AfxGetInstanceHandle(); :ZdUx
InitHotkey(); x@P{l&:>
return CWinApp::InitInstance(); b
hjZ7=
} 2k7bK6=nm
~7q uTp)
int CHookApp::ExitInstance() yI:#
|w|
{ Q/_[--0
VerifyWindow(); F-n"^.7
UnInit(); e^).W3SK]
return CWinApp::ExitInstance(); Bp AB5=M0
} B7NtkMK
lp&!lb`
////////////////////////////////////////////////////////////////////// CaptureDlg.h : header file jyW[m,#(go
#if !defined(AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_)
1S%k
#define AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_ (J:dK=O@Z
#if _MSC_VER > 1000 ic6L9>[
#pragma once @%tXFizh
#endif // _MSC_VER > 1000 q5&Ci`
OKuD"
class CCaptureDlg : public CDialog !J>A,D"-
{ \hk/1/siyF
// Construction [2$4| ;7
public: /<)-q-W;
BOOL bTray; ]XUl@Y.
BOOL bRegistered; r$)$n&j
BOOL RegisterHotkey(); ^Uw[x\%#gD
UCHAR cKey; p|6v~
UCHAR cMask; ~JZ3a0$^
void DeleteIcon(); l_FGZ!7
void AddIcon(); aP~gaSx
UINT nCount; ph30'"[Z}
void SaveBmp(); Qb^q+C)o]
CCaptureDlg(CWnd* pParent = NULL); // standard constructor 7-iIay1h"
// Dialog Data lhn8^hOJ/
//{{AFX_DATA(CCaptureDlg) :,]S}R
enum { IDD = IDD_CAPTURE_DIALOG }; 2V#6q,2
CComboBox m_Key; H^c0Kh+
BOOL m_bControl; X\GM/A
BOOL m_bAlt; g%J./F=@3
BOOL m_bShift; sn\;bq
CString m_Path; o sdOw8
CString m_Number; tR`S#rk
//}}AFX_DATA .{dE}2^
// ClassWizard generated virtual function overrides ol!86rky
//{{AFX_VIRTUAL(CCaptureDlg) yM$J52#d#
public: ,j;PRJ
virtual BOOL PreTranslateMessage(MSG* pMsg); kM*T$JqN
protected: i1*C{Lf;%)
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support vx 0UoKX
virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam); \tt'm\_
//}}AFX_VIRTUAL SPy3~Db-o
// Implementation M$#sc`4*
protected: y]qsyR18i
HICON m_hIcon; 4^Qi2[ w
// Generated message map functions ^KHLBSc:
//{{AFX_MSG(CCaptureDlg) -Q[g/%
virtual BOOL OnInitDialog(); =:$) Z
afx_msg void OnSysCommand(UINT nID, LPARAM lParam); z4Oo@3$\R
afx_msg void OnPaint(); IlZu~B9c
afx_msg HCURSOR OnQueryDragIcon(); bAhZ7;T~
virtual void OnCancel(); wz#[:2
afx_msg void OnAbout(); TL-i=\{L:d
afx_msg void OnBrowse(); eqzTQen8q
afx_msg void OnChange(); =t+ ('
//}}AFX_MSG _x\m|SF_g
DECLARE_MESSAGE_MAP() +mWjBY
}; *re 44
#endif 7c1+t_ Ew
8GB]95JWwp
////////////////////////////////////////////////////////////// CaptureDlg.cpp : implementation file mY2:m(9"5
#include "stdafx.h" b :\D\X
#include "Capture.h" P.4E{.)(
#include "CaptureDlg.h" qe?Ggz3p.
#include <windowsx.h> mUwUs~PjA
#pragma comment(lib,"hook.lib") yjZ2 if
#ifdef _DEBUG EZAm)5:]A
#define new DEBUG_NEW |^5 /(16
#undef THIS_FILE az(5o
static char THIS_FILE[] = __FILE__; i.@*tIK
#endif o<\6Rm
#define IDM_SHELL WM_USER+1 LD.Ck6@
BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask); Z;*`fd?8
BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask); FN{/.?w(
UCHAR Key_Table[]={0x78,0x79,0x7a,0x7b,0x6a,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39}; >ZCo 8aK
class CAboutDlg : public CDialog HWtPLlNt
{ !LSs9_w
public: Q_lu`F|
CAboutDlg(); &l^n4
// Dialog Data BR3mAF
//{{AFX_DATA(CAboutDlg) /RF%1!M
K
enum { IDD = IDD_ABOUTBOX }; 1M+Zkak7p
//}}AFX_DATA NhlJ3/J j
// ClassWizard generated virtual function overrides 5ZsDgOeY
//{{AFX_VIRTUAL(CAboutDlg) )
hdgz$cl
protected: :uR>UDlPX
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support ZQLB`n@
//}}AFX_VIRTUAL 5Fe-=BX(
// Implementation Qx.jCy@
protected: 4!'1/3cY
//{{AFX_MSG(CAboutDlg) a-Y6w5
//}}AFX_MSG w|G~Il
DECLARE_MESSAGE_MAP() )kA2vX^=Z
}; 59MR|Jt
cju@W] !
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) "'aqb~j^
{ WB;J1TpM7
//{{AFX_DATA_INIT(CAboutDlg) ,?w!5N;iRO
//}}AFX_DATA_INIT
oP-;y&AS
} S-,kI
7,su f }=
void CAboutDlg::DoDataExchange(CDataExchange* pDX) <j"O%y.
{ A:xb!=
2
CDialog::DoDataExchange(pDX); c,AZ/t
//{{AFX_DATA_MAP(CAboutDlg) -d_ 7*>m$
//}}AFX_DATA_MAP &Q+]t"OA!
} w%~qB5wF6
Zjt9vS)
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) Nh :JU?h
//{{AFX_MSG_MAP(CAboutDlg) vK'9{q|g
// No message handlers ;_bq9x
//}}AFX_MSG_MAP wy\o*P9mG)
END_MESSAGE_MAP() z@n+7p`w
Sgx+V"bkT
CCaptureDlg::CCaptureDlg(CWnd* pParent /*=NULL*/) 'Aet{A=9
: CDialog(CCaptureDlg::IDD, pParent) ,*w>z
{ Jmy)J!ib*
//{{AFX_DATA_INIT(CCaptureDlg) g1dmkX
m_bControl = FALSE; :+1bg&wQ
m_bAlt = FALSE; JOgmF_(>Z
m_bShift = FALSE; f-s~Q4
m_Path = _T("c:\\"); -g$OOJB6
m_Number = _T("0 picture captured."); _X?y,#
nCount=0; XWf7"]%SX
bRegistered=FALSE; @2|G|C/]O}
bTray=FALSE; *|CLO|B)
//}}AFX_DATA_INIT &0i71!Oy
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 >+f'!*%7He
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); F]Pul|.l
} nYgx9Q"<om
&}O8w77
void CCaptureDlg::DoDataExchange(CDataExchange* pDX) SE-} XI\
{ &BTfDsxAK
CDialog::DoDataExchange(pDX); B~BUWWMfp
//{{AFX_DATA_MAP(CCaptureDlg) .yG8B:7N2
DDX_Control(pDX, IDC_KEY, m_Key); `^`9{@~
DDX_Check(pDX, IDC_CONTROL, m_bControl); 2}>go^#O/w
DDX_Check(pDX, IDC_ALT, m_bAlt); }o{!}g9
DDX_Check(pDX, IDC_SHIFT, m_bShift); JN)"2}SE
DDX_Text(pDX, IDC_PATH, m_Path); B
;;cbY
DDX_Text(pDX, IDC_NUMBER, m_Number); P$F#,Cn
//}}AFX_DATA_MAP =^"~$[z(
} M Yu?&}%^
WY3_7k8u
BEGIN_MESSAGE_MAP(CCaptureDlg, CDialog) U0zW9jB
//{{AFX_MSG_MAP(CCaptureDlg) I}1fEw>8
ON_WM_SYSCOMMAND() ?Ip$;s
ON_WM_PAINT() 0rGj|@+;
ON_WM_QUERYDRAGICON() wo$|~
Hr
ON_BN_CLICKED(ID_ABOUT, OnAbout) (kdC1,E
ON_BN_CLICKED(IDC_BROWSE, OnBrowse)
]&/0
ON_BN_CLICKED(ID_CHANGE, OnChange) 0yKwH\S
//}}AFX_MSG_MAP fg< (bXC
END_MESSAGE_MAP() a?l_-Fi
!HbqbS22
BOOL CCaptureDlg::OnInitDialog() 37,L**Dgs
{ C!`>cUhE{
CDialog::OnInitDialog(); /;[}=JL<Q
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); }q/(D?
ASSERT(IDM_ABOUTBOX < 0xF000); EF0Pt
CMenu* pSysMenu = GetSystemMenu(FALSE); `g2&{)3k
if (pSysMenu != NULL) % d4+Ctrp-
{ b ^+Fs
CString strAboutMenu; Ae3,W
strAboutMenu.LoadString(IDS_ABOUTBOX); B?!9W@
if (!strAboutMenu.IsEmpty()) *c!;^Qy p&
{ ,,zd.9n
pSysMenu->AppendMenu(MF_SEPARATOR); (cu'
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); !7ph,/P$7
} i=x.tsJ:hB
} ?hP<@L6K
SetIcon(m_hIcon, TRUE); // Set big icon {_?T:`
SetIcon(m_hIcon, FALSE); // Set small icon qAnA=/k`
m_Key.SetCurSel(0); 5/zf
x
RegisterHotkey(); fpI;`s
CMenu* pMenu=GetSystemMenu(FALSE); >2FAi.,
pMenu->DeleteMenu(SC_MAXIMIZE,MF_BYCOMMAND); S a(yjF1
pMenu->DeleteMenu(SC_SIZE,MF_BYCOMMAND); z%++\.g_
pMenu->DeleteMenu(SC_RESTORE,MF_BYCOMMAND); )R8%wk?2
return TRUE; // return TRUE unless you set the focus to a control A!Knp=Gw
} TB;3`
qr7 X-[&
void CCaptureDlg::OnSysCommand(UINT nID, LPARAM lParam) hg$qbeUl
{ ecM4]U
if ((nID & 0xFFF0) == IDM_ABOUTBOX) Tyg$`\#
{ /h1dm,
CAboutDlg dlgAbout;
yBJ/>SAcG
dlgAbout.DoModal(); +e&m#d
} ~W]#9&yQ
else ~R"]LbeY
{ :|*Gnu
CDialog::OnSysCommand(nID, lParam); +9Xu"OFm
} ey'pm\Z
} a3b2nAI l
u^j8
XOT
void CCaptureDlg::OnPaint() V:nMo2'hb
{ H={O13
if (IsIconic()) n1fEdaa7g
{ {QIS411
CPaintDC dc(this); // device context for painting D!l [3
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); ]}UeuF\
// Center icon in client rectangle u=_bM2;~Z
int cxIcon = GetSystemMetrics(SM_CXICON); 5bu[}mJ
int cyIcon = GetSystemMetrics(SM_CYICON); ZX~>uf\n
CRect rect; vB&F_"/X2
GetClientRect(&rect); u|]mcZ,ZW
int x = (rect.Width() - cxIcon + 1) / 2; ]
P:NnKgK
int y = (rect.Height() - cyIcon + 1) / 2; (= S"Kvb~#
// Draw the icon ^KaqvG$ed
dc.DrawIcon(x, y, m_hIcon); z v L>(R
} GoGohsj
else <M5{.`o
{ s9ju/+fv
CDialog::OnPaint(); f.U0E6-(3N
} z'vdC
} s0~05{
{<''OwQF~+
HCURSOR CCaptureDlg::OnQueryDragIcon() 'xLM>6[wz
{ ,v$2'm)V
return (HCURSOR) m_hIcon; bQ|#_/?
} M~d+HE
a2(D!_dZR
void CCaptureDlg::OnCancel() ^P3g9'WK
{ .(P@Bl]XJ
if(bTray) Fy4<
DeleteIcon(); c<JM1
CDialog::OnCancel(); KZp,=[t
} JxMyeo%gv
-z>Z0viA
void CCaptureDlg::OnAbout() _rWM]
{ +l[Z2mW
CAboutDlg dlg; i5L+8kx4
dlg.DoModal(); 8|S1|t,
} z$I[kR%I{
N+C%Z[gt[
void CCaptureDlg::OnBrowse() >Rl0%!
{ EyKkjEXx_
CString str; *<|~=*Ddf
BROWSEINFO bi; ^cKv JSY
char name[MAX_PATH]; Q%X:5G?
ZeroMemory(&bi,sizeof(BROWSEINFO)); eCPKpVhP
bi.hwndOwner=GetSafeHwnd(); %+t
bi.pszDisplayName=name; `[C v-
bi.lpszTitle="Select folder"; Q*mMF@-:
bi.ulFlags=BIF_RETURNONLYFSDIRS; BM=V,BZy
LPITEMIDLIST idl=SHBrowseForFolder(&bi); P0`>{!r6@
if(idl==NULL) QXIbFv
return; (d5vH)+A
SHGetPathFromIDList(idl,str.GetBuffer(MAX_PATH)); N>cp>&jV
str.ReleaseBuffer(); [i<$ZP
m_Path=str; _4XoUE\\
if(str.GetAt(str.GetLength()-1)!='\\') `ohF?5J,
m_Path+="\\"; 8zWBXV
UpdateData(FALSE); ?C#F?N0
} cW~6@&zp
O>b&-U"R
void CCaptureDlg::SaveBmp() i SAidK,
{ X,iuz/Q
CDC dc; eK=m0 2
dc.CreateDC("DISPLAY",NULL,NULL,NULL); t`Y1.]@U
CBitmap bm; Lv, ji_
int Width=GetSystemMetrics(SM_CXSCREEN); H(5ui`' s
int Height=GetSystemMetrics(SM_CYSCREEN); k #,Gfs
bm.CreateCompatibleBitmap(&dc,Width,Height); L8?Z!0D/h
CDC tdc; w/^0tZ~
tdc.CreateCompatibleDC(&dc); "x=@,*Bk
CBitmap*pOld=tdc.SelectObject(&bm); npG+#z
tdc.BitBlt(0,0,Width,Height,&dc,0,0,SRCCOPY); ]'1N_m]?
tdc.SelectObject(pOld); =A6u=
BITMAP btm; '^.=gTk
bm.GetBitmap(&btm); V5hlG =V
DWORD size=btm.bmWidthBytes*btm.bmHeight; 0%&fUz36E6
LPSTR lpData=(LPSTR)GlobalAllocPtr(GPTR,size); [6/%V>EM
BITMAPINFOHEADER bih; "PDSqYA
bih.biBitCount=btm.bmBitsPixel; +n8I(l=
bih.biClrImportant=0; 9rf|r
3
bih.biClrUsed=0; Vbqm]2o&
bih.biCompression=0; 1=o(sIeA
bih.biHeight=btm.bmHeight; &]"_pc/>m
bih.biPlanes=1; go%X%Os]
bih.biSize=sizeof(BITMAPINFOHEADER); nkCRe
bih.biSizeImage=size; q=E}#[EgY
bih.biWidth=btm.bmWidth; gne#v
bih.biXPelsPerMeter=0; 8G[Y9A(bmP
bih.biYPelsPerMeter=0; #LNB@E
GetDIBits(dc,bm,0,bih.biHeight,lpData,(BITMAPINFO*)&bih,DIB_RGB_COLORS); L2/<+Zw
static int filecount=0; G(Idiw#WT
CString name; pRk'GR]`
name.Format("pict%04d.bmp",filecount++); _uy5?auQ
name=m_Path+name; ''\cBM!
BITMAPFILEHEADER bfh; O7<V@GL+
bfh.bfReserved1=bfh.bfReserved2=0; CSk
bfh.bfType=((WORD)('M'<< 8)|'B'); > {LJ#Dc6
bfh.bfSize=54+size; 1!v >I"]
bfh.bfOffBits=54; ]5)&36
CFile bf; "|l
oSf@
if(bf.Open(name,CFile::modeCreate|CFile::modeWrite)){ ).O2_<&?F
bf.WriteHuge(&bfh,sizeof(BITMAPFILEHEADER)); v_1JH<GJ-
bf.WriteHuge(&bih,sizeof(BITMAPINFOHEADER)); b#\kZ/W
bf.WriteHuge(lpData,size); -~Z@,
bf.Close(); IpaJ<~ p
nCount++; !i"9f_
} dC;d>j,
GlobalFreePtr(lpData); >`,#%MH#
if(nCount==1) EK- bvZ
m_Number.Format("%d picture captured.",nCount); RAx]Sp
Q-S
else r^o}Y
m_Number.Format("%d pictures captured.",nCount); 6Nd_YX
UpdateData(FALSE); zk^7gx3x
} ow>[#.ua
tB(X`A.|
BOOL CCaptureDlg::PreTranslateMessage(MSG* pMsg) pQgOT0f
{ EBn:[2
if(pMsg -> message == WM_KEYDOWN) Vo9)KxR
{ abk:_
if(pMsg -> wParam == VK_ESCAPE) [F>n!`8
return TRUE; :+Je989\[C
if(pMsg -> wParam == VK_RETURN) $Ln2O#
return TRUE; px(1Ppb9
} Nm:|C 3_I
return CDialog::PreTranslateMessage(pMsg); MT#[ -M\
} a~N)qYL:
<812V8<!
LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam) *.;}OX^X
{ },QFyT
if(message==WM_HOTKEY&&lParam==WM_KEYDOWN){ iNrmhiql
SaveBmp(); ^&w'`-ra
return FALSE; va*>q-QCr
} V{aIhH>P
if(message==IDM_SHELL&&lParam==WM_RBUTTONUP){ 7QL) }b.H
CMenu pop; #(Yb
lY
pop.LoadMenu(MAKEINTRESOURCE(IDR_MENU1)); ,vY
I
O
CMenu*pMenu=pop.GetSubMenu(0); 1p5q}">z
pMenu->SetDefaultItem(ID_EXITICON); 6`$z*C2{
CPoint pt; {~p %\
GetCursorPos(&pt); ljR?* P
int id=pMenu->TrackPopupMenu(TPM_RIGHTALIGN|TPM_NONOTIFY|TPM_RETURNCMD|TPM_LEFTBUTTON,pt.x,pt.y,this); P9HPr2
if(id==ID_EXITICON) Z YO/'YW
DeleteIcon(); _q!ck0_
else if(id==ID_EXIT) B(vz$QE,$r
OnCancel(); %$-3fj7
return FALSE; %KVRiX
} 5>k~yaju/
LRESULT res= CDialog::WindowProc(message, wParam, lParam); <HX-qNA?
if(message==WM_SYSCOMMAND&&wParam==SC_MINIMIZE) rN!9&
AddIcon(); UtW3KvJ#=
return res; +wgUs*(W
} 1~iBzPU2
/SM#hwFxJ&
void CCaptureDlg::AddIcon() &7y1KwfXn
{ 9Qm{\
NOTIFYICONDATA data; '
xq5tRg>
data.cbSize=sizeof(NOTIFYICONDATA); cngPc]?N
CString tip; K>p:?w
tip.LoadString(IDS_ICONTIP); Uc;IPS
data.hIcon=GetIcon(0); ea;c\84_N
data.hWnd=GetSafeHwnd(); Tf]VcEF
strcpy(data.szTip,tip); I)4|?tb?
data.uCallbackMessage=IDM_SHELL; z&G3&?Z
data.uFlags=NIF_ICON|NIF_MESSAGE |NIF_TIP ; gYIYA"xN`
data.uID=98; oM7-1O
Shell_NotifyIcon(NIM_ADD,&data); o+23?A~+
ShowWindow(SW_HIDE); ;."{0gq
bTray=TRUE; ,3TD $2};.
} kR|DzB7
2F)OyE
void CCaptureDlg::DeleteIcon() .\\#~r`t 3
{ j
W]c9u
NOTIFYICONDATA data; 9Yne=R/]
data.cbSize=sizeof(NOTIFYICONDATA); {y%O_-C'r
data.hWnd=GetSafeHwnd(); ,UJPLj^
data.uID=98; n7<-lQRaxZ
Shell_NotifyIcon(NIM_DELETE,&data); R}mWHB_h"
ShowWindow(SW_SHOW); UVRV7^eTe
SetForegroundWindow(); 7`n8
OR4
ShowWindow(SW_SHOWNORMAL); IaqN@IlWb
bTray=FALSE; 6E%k{ r
} .:Xe* Q
N@
tb^M
void CCaptureDlg::OnChange() t-{OP?cE1
{
jS)-COk
RegisterHotkey(); )n61IqrW
} c^UM(bW
Tfs9<k>G#
BOOL CCaptureDlg::RegisterHotkey() j[
YTg]
{ NY
w(hAPv
UpdateData(); ~$9"|
UCHAR mask=0; 6m<9^NT
UCHAR key=0; zT 40,rk
if(m_bControl) \}(-9dr
mask|=4; 8#3cmpx4
if(m_bAlt) b8Ad*f\
mask|=2; `l@t3/
if(m_bShift) ~oyPmIcb
mask|=1; W|
eG}`
key=Key_Table[m_Key.GetCurSel()]; Hd}t=6
if(bRegistered){ ^8t*WphZC
DeleteHotkey(GetSafeHwnd(),cKey,cMask); M4]|(A
bRegistered=FALSE; 1Ee>pbd
} C8SNSeg
cMask=mask; dNmX<WXG
cKey=key; M#IR=|P]
bRegistered=AddHotkey(GetSafeHwnd(),cKey,cMask); ?AH<y/i<Y
return bRegistered; e
q.aN3KB"
} :njUaMFoMA
%[;KO&Ga