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:
aO:wedfl
Bw^*6P^l 一、实现方法
J^tLK T B o^P/ -&T 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:
r;}%} /IX ;T1OXuQ #pragma data_seg("shareddata")
A1Tk6i<F1 HHOOK hHook =NULL; //钩子句柄
wLn,x;;< UINT nHookCount =0; //挂接的程序数目
$yG>=GN static UCHAR HotKey[MAX_KEY] = {0}; //热键虚拟键码
-4du`dg static UCHAR HotKeyMask[MAX_KEY] = {0}; //组合掩码, control=4,alt=2,shift=1
VJW%y)_[ static HWND hCallWnd[MAX_KEY] = {0}; //window handle associated with hotkey
VF8pH< static int KeyCount =0;
Ox.6]W~ static UCHAR MaskBits =0; //00000 Ctrl=4 & Alt=2 & Shift=1
%JUD54bBt #pragma data_seg()
(+SfDL$m \09m
?;^ 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。
[n%=2*1p 9H^$cM9C DLL中的两个输出函数分别用来添加/删除热键,函数代码如下:
fmqHWu*wG CUIFKM BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR
NDsF<2A4 cKey,UCHAR cMask)
\NE~k)`4j% {
#-T xhwYs BOOL bAdded=FALSE;
7p"4rL for(int index=0;index<MAX_KEY;index++){
)"W__U0 if(hCallWnd[index]==0){
alr'If@7 hCallWnd[index]=hWnd;
Y3%_IwSJ| HotKey[index]=cKey;
hnOo T? V HotKeyMask[index]=cMask;
{yXpBS bAdded=TRUE;
| ]#PF* KeyCount++;
#8xP,2&zf break;
ySkz5K+|g }
-8Z;s8ACo }
Cp!bsasj return bAdded;
Z=c&</9e }
d v8q&_
//删除热键
=;HC7TUM& BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
{|!>
{ {
}
O:Y?Wq^ BOOL bRemoved=FALSE;
Fa]|Y for(int index=0;index<MAX_KEY;index++){
3^!Y9$y1 if(hCallWnd[index]==hWnd){
iX]tL:,~i if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
5~,usA* hCallWnd[index]=NULL;
0Y|"Bo9k HotKey[index]=0;
m$XMq HotKeyMask[index]=0;
f2*e&+LjTP bRemoved=TRUE;
wqx9 KeyCount--;
5t=7- break;
N [qNSo| }
7XM:4whw }
i#4}xvi }
]Lb Fh5;s return bRemoved;
$?Dcp^ }
xLN$!9t V*d@@%u** IjaFNZZC! DLL中的钩子函数如下:
%]"eN{Uvn x->H~/ LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
jjJvyZi~J {
xR~9|H9a BOOL bProcessed=FALSE;
i]$/& / if(HC_ACTION==nCode)
9*Z!=Y#4, {
^n%9Tu if((lParam&0xc0000000)==0xc0000000){// 有键松开
(fqU73 switch(wParam)
.ri?p:a}w {
R+&{lc case VK_MENU:
?B{,%2+ MaskBits&=~ALTBIT;
qsG}A break;
|s!<vvp] case VK_CONTROL:
'hNRIM1 MaskBits&=~CTRLBIT;
z(dDX%k@ break;
+*`>7m<^ case VK_SHIFT:
7X{@$>+S MaskBits&=~SHIFTBIT;
1lLXu break;
Q $^)z_jai default: //judge the key and send message
%|(Cb!ySX break;
?{]"UnyVE* }
.VA'W16 for(int index=0;index<MAX_KEY;index++){
{36QZV*P if(hCallWnd[index]==NULL)
:"Gd;~p. continue;
9i`MUE1Sh if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
p)c"xaTP#F {
/P[ @o SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
SYYg
2I bProcessed=TRUE;
l\6.f_ }
GLiD,QX< }
Ae8P'FWB> }
vSv:!5* else if((lParam&0xc000ffff)==1){ //有键按下
cnL@j_mb switch(wParam)
0?w4 {
i Qa=4'9; case VK_MENU:
7<zI'^l MaskBits|=ALTBIT;
1Q!^%{Y; break;
z)fg>?AGr case VK_CONTROL:
#gSIa6z1W MaskBits|=CTRLBIT;
RD6`b_]o break;
Gj- *D7X5 case VK_SHIFT:
f-5}`)`.+ MaskBits|=SHIFTBIT;
}kF*I@:g break;
GmdS~Fhp default: //judge the key and send message
"ZR^w5 break;
O[5u6heNMr }
YPmgR]=6 for(int index=0;index<MAX_KEY;index++){
df8aM<&m3 if(hCallWnd[index]==NULL)
1z-Q~m@@ continue;
I,7n-G_' if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
W~?mr!` {
pKhV<MFB SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
aMO+y91Y( bProcessed=TRUE;
*3h!&.zm }
MuP&m{ }
MB"<^ZX }
Lb0B m R%0 if(!bProcessed){ //一般按键事件,为监视键盘的程序留出余地
BE,H`G #h for(int index=0;index<MAX_KEY;index++){
c.Do b?5 if(hCallWnd[index]==NULL)
A08{]E#v> continue;
F(;95TB if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
Vbp`Rm1? SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
i3<ZFR //lParam的意义可看MSDN中WM_KEYDOWN部分
Qe4"a*l-r }
o0FVVS l }
(E<QA }
3sz?49tX return CallNextHookEx( hHook, nCode, wParam, lParam );
.WpvDDUK3 }
`t Zw(Z=h _-nIy*', = 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:
)kt,E}609 )" H r3 BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
BLcsIyq BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
vF.Ml 4qmaL+Q 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:
J/ZC<dkYQ PP!}w LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
rEY5,'?YHv {
t.6gyrV7>< if(message==WM_HOTKEY&&lParam==WM_KEYDOWN)
{+x;J4 {
;eiqzdP //lParam表示是按下还是松开,如果有多个热键,由wParam来区分
'`/w%OEVC5 SaveBmp();
6^vHFJ$ return FALSE;
.+2@(r }
` EgO&;1D) …… //其它处理及默认处理
G&v. cF#Y' }
X.hVMX2B (g#,AX :P:OQ[$ 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。
-?PXj)< :Tn1]a)f6 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。
Ilv
_. Wz-7oP%;I 二、编程步骤
k5TPzm=y{ M,/{ 53 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";
zx=AT TP?HxO_C 2、 在"Hook"项目中导出AddHotkey()、DeleteHotkey()函数;
,`;Dre _)F0oC { 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;
}5a$Ka- /{+77{#Qn 4、 使用Class Wizard在"Capture"项目中添加按钮的鼠标单击消息响应函数,并重载对话框的WindowProc()函数;
3m59EI-p _.G p}0a 5、 添加代码,编译运行程序。
z{ydP Ra "
H;iAv 三、程序代码
&W:R#/| v#o<.
Ig ///////////////////////////////////// Hook.h : main header file for the HOOK DLL
0F|DD8tHR #if !defined(AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_)
a~"<lzu|$ #define AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_
4>$weu^ #if _MSC_VER > 1000
R8YA"(j!L #pragma once
2$%E:J+2:$ #endif // _MSC_VER > 1000
Q^z&;%q1 #ifndef __AFXWIN_H__
Fu6~8uDV{{ #error include 'stdafx.h' before including this file for PCH
SwVdo|%.? #endif
>djTJ>dl_u #include "resource.h" // main symbols
a>/cVu'kz class CHookApp : public CWinApp
t_Rpeav {
)OgQ&,# public:
KWB;*P
C^ CHookApp();
dLIZ)16& // Overrides
I]OVzM // ClassWizard generated virtual function overrides
0'O*Y
]h+ //{{AFX_VIRTUAL(CHookApp)
A3=$I&!% public:
yk7 l{F virtual BOOL InitInstance();
XP'7+/A virtual int ExitInstance();
Lavm //}}AFX_VIRTUAL
5\|u]
~b //{{AFX_MSG(CHookApp)
Rr0@F`"R // NOTE - the ClassWizard will add and remove member functions here.
,}hJ) // DO NOT EDIT what you see in these blocks of generated code !
=9@t6 //}}AFX_MSG
69>N xr~k DECLARE_MESSAGE_MAP()
g<"k\qs7 };
pHkhs{/X LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam, LPARAM lParam);
fR6.:7& BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
,F)9{ <r] BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
j/+e5.EX/ BOOL InitHotkey();
hB:}0@l6p= BOOL UnInit();
Z}*{4V`R #endif
=TzmhX5 TaN]{k //////////////////////////////////////// Hook.cpp : Defines the initialization routines for the DLL.
j(SBpM #include "stdafx.h"
f.cQp&&]r #include "hook.h"
nC>'kgRt #include <windowsx.h>
!Hp H #ifdef _DEBUG
_~_E(rTn #define new DEBUG_NEW
'YaD="" #undef THIS_FILE
fqcFfz6?x static char THIS_FILE[] = __FILE__;
RN0=jo!58 #endif
3.^Tm+ C #define MAX_KEY 100
[V-OYjPAx #define CTRLBIT 0x04
ozr82 #define ALTBIT 0x02
")cJA f #define SHIFTBIT 0x01
ZSo#vQ #pragma data_seg("shareddata")
M
XX:i HHOOK hHook =NULL;
Cm5:_K`;] UINT nHookCount =0;
QIg.r\>o static UCHAR HotKey[MAX_KEY] = {0}; //hotkey
dY'mY ~Tv static UCHAR HotKeyMask[MAX_KEY] = {0}; //flag for hotkey, value is VK_CONTRL or VK_NEMU or VK_SHIFT
O5:2B\B static HWND hCallWnd[MAX_KEY] = {0}; //window associated with hotkey
Pb(XR+ static int KeyCount =0;
X>`5YdT~+ static UCHAR MaskBits =0; //00000 Ctrl Alt Shift
_CDl9pP36# #pragma data_seg()
XW*,Lo5>H\ HINSTANCE hins;
IV5B5Q'D void VerifyWindow();
lwU$*?yv BEGIN_MESSAGE_MAP(CHookApp, CWinApp)
A&:i$`m, //{{AFX_MSG_MAP(CHookApp)
10 D6fkjf // NOTE - the ClassWizard will add and remove mapping macros here.
k]<E1 c/ // DO NOT EDIT what you see in these blocks of generated code!
t'{\S_ //}}AFX_MSG_MAP
|Qe#[Q7 END_MESSAGE_MAP()
.<Lbv5m ;F;"Uw CHookApp::CHookApp()
]S=AO/' {
8a;I,DK=j // TODO: add construction code here,
+?!x;qS^ // Place all significant initialization in InitInstance
.1&~@e%=- }
WjrUns dcGs0b CHookApp theApp;
7K|:
7e( LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
wLDWD,"K {
LXm5f; BOOL bProcessed=FALSE;
,>^6ztM if(HC_ACTION==nCode)
b&l/)DU {
aq|R? if((lParam&0xc0000000)==0xc0000000){// Key up
o?Wp[{K switch(wParam)
U60jkzIRH {
*r&q;ER case VK_MENU:
ZDI%?.U MaskBits&=~ALTBIT;
.5;Xd? break;
l|O)B # case VK_CONTROL:
1%;o-F@ MaskBits&=~CTRLBIT;
WI?iz-,]( break;
@LzqQ[ case VK_SHIFT:
;m;a"j5 MaskBits&=~SHIFTBIT;
4|Wglri break;
Kc>C$}/}$ default: //judge the key and send message
y~w -z4 break;
vtv^l3 }
Q bg,q for(int index=0;index<MAX_KEY;index++){
}[[ if(hCallWnd[index]==NULL)
@-~
)M_ continue;
?3{R'Buv] if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
cPemrNxydN {
C{i9~80n SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
: DxCjv bProcessed=TRUE;
DRBRs-D }
qm.30 2 }
Tk^J#};N }
yC]xYn) else if((lParam&0xc000ffff)==1){ //Key down
f?ImQYqP
switch(wParam)
;Jn"^zT {
b;N[_2 case VK_MENU:
wX0m8"g@ MaskBits|=ALTBIT;
N34.Bt break;
U%Kv}s/(F{ case VK_CONTROL:
f1a >C MaskBits|=CTRLBIT;
n9;z= break;
Y4\BHFq case VK_SHIFT:
Y1?"Ut MaskBits|=SHIFTBIT;
)wmG&"qsP break;
^l UV^%f default: //judge the key and send message
n>)'! break;
H O^3v34ZO }
V-y"@0%1 for(int index=0;index<MAX_KEY;index++)
C+*qU {
wH=L+bA>a if(hCallWnd[index]==NULL)
%{fa
.>6 continue;
yzvNv]Z'* if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
ZfpV=DU {
4@K9% SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
+0w~Skd, bProcessed=TRUE;
aUdbN&G }
`]Uu` b }
2(-J9y| }
5/v,| if(!bProcessed){
@>wD`<U| for(int index=0;index<MAX_KEY;index++){
~*3obZ2>2 if(hCallWnd[index]==NULL)
kWF/SsE continue;
pJ` M5pF if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
"[PxLq5 SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
4Y):d!'b }
F{:ZHCm }
;XJK*QDN }
b8?qYm return CallNextHookEx( hHook, nCode, wParam, lParam );
(,5oqU9s@ }
(xp<@- thoAEG80 BOOL InitHotkey()
7x/S4Gs'4 {
vv2N;/;I if(hHook!=NULL){
p2c4 <f-M nHookCount++;
9,?\hBEu return TRUE;
2Xu?/yd }
U>q&p}z0H else
/5:f[-\s hHook=SetWindowsHookEx(WH_KEYBOARD,(HOOKPROC)KeyboardProc,hins,0);
qf/1a CQiP if(hHook!=NULL)
4H7
3a5f nHookCount++;
QHt;c return (hHook!=NULL);
+N161vo7 }
jpL'y1@Ut BOOL UnInit()
\JJ>y {
5ryzAB O\2 if(nHookCount>1){
%+WIv+< nHookCount--;
'C
l}IDF return TRUE;
81\$X }
U=?hT&w\S BOOL unhooked = UnhookWindowsHookEx(hHook);
x.V6C0|6" if(unhooked==TRUE){
)$V &Nf
nHookCount=0;
rsbdDTy hHook=NULL;
A),nkw0X }
(nhv#&Fd+ return unhooked;
J`6X6YZ }
s\c*ibxM, / 38b:, BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
8>:kv:MId {
|!r.p_Zt BOOL bAdded=FALSE;
M`W%nvEDE for(int index=0;index<MAX_KEY;index++){
NF&
++Vr6 if(hCallWnd[index]==0){
^y@RfM=A hCallWnd[index]=hWnd;
F^5<o HotKey[index]=cKey;
Z[.+Wd\)-9 HotKeyMask[index]=cMask;
t@GPB]3[ bAdded=TRUE;
#!IezvWf KeyCount++;
yOn +Y break;
@w1@|"6vF }
P]bq9!{1 }
RB5fn+FiZ return bAdded;
G)(\!0pNZ }
>U~B"'!xV $9GRA M. BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
j1!P:( {
Oeo:V" BOOL bRemoved=FALSE;
\V@Hf"=j for(int index=0;index<MAX_KEY;index++){
Da)rzr|}>3 if(hCallWnd[index]==hWnd){
zE{@' if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
.xtjB8gc hCallWnd[index]=NULL;
{(}Mu R HotKey[index]=0;
*}9i@DP1, HotKeyMask[index]=0;
?^z!yD\ bRemoved=TRUE;
RjO9E.nm KeyCount--;
<B]\& break;
?Gq'r2V }
>3H/~ Y }
gf]biE"k }
WA-`
*m$v return bRemoved;
5YJn<XEc }
h+mM <BIj
a void VerifyWindow()
#C?T {
)hH9VGZq( for(int i=0;i<MAX_KEY;i++){
!F0MLvdX7^ if(hCallWnd
!=NULL){ QMI&?Q:=
if(!IsWindow(hCallWnd)){ qC9$xIWq
hCallWnd=NULL; ,63hO.4M
HotKey=0; )u7*YlU\I
HotKeyMask=0; ; Xy\7tx
KeyCount--; jB]tq2i
} !1f8~"Z
} G| pZ
} 0N3 cC4!
} F]~ rA! g1
OL]^4m
BOOL CHookApp::InitInstance() N> RabD
{ Wvl>i HB
AFX_MANAGE_STATE(AfxGetStaticModuleState()); SCl$+9E
hins=AfxGetInstanceHandle(); eqcV70E8cK
InitHotkey(); (: IUg
return CWinApp::InitInstance(); 96a A2s1
} Gx?p,Fj
RQI? \?o
int CHookApp::ExitInstance() >:M3!6H_~{
{ *loPwV8
VerifyWindow(); 6#XB'PR2p
UnInit(); bkkhx,Oi[G
return CWinApp::ExitInstance(); PF@+~FI
} H4LZNko
V,bfD3S3
////////////////////////////////////////////////////////////////////// CaptureDlg.h : header file p<>%9180!F
#if !defined(AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_) ZdHfZ3)dB
#define AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_ <va3L y)c&
#if _MSC_VER > 1000 E"5
zT1d
#pragma once 9l2,:EQ*
#endif // _MSC_VER > 1000 X3#/|>
*6~ODiB
class CCaptureDlg : public CDialog ;cl\$TDL
{ &P&LjHFK
// Construction 6_/691
public: x[7jm"Pz
BOOL bTray; 0!F"s>(H
BOOL bRegistered; `e]L.P_e?
BOOL RegisterHotkey(); h5WS<P
UCHAR cKey; m"\jEfjO
UCHAR cMask; T9]|*~ ,T
void DeleteIcon(); J&}/Xw)
void AddIcon(); 2?ac\c6"
UINT nCount; YQOdwcLG
void SaveBmp(); Z^,C><Yt
CCaptureDlg(CWnd* pParent = NULL); // standard constructor ^'i(@{{o\
// Dialog Data p+U}oC
//{{AFX_DATA(CCaptureDlg) v!?bEM3D
enum { IDD = IDD_CAPTURE_DIALOG }; <b>@'\w9
CComboBox m_Key; ^RytBwzKM
BOOL m_bControl; ;>_\oZGj_
BOOL m_bAlt; WS8m^~S@\
BOOL m_bShift; +[*VU2f t
CString m_Path; q}e"E
cr
CString m_Number; C4],7"Sw
//}}AFX_DATA T!5m'Q.
// ClassWizard generated virtual function overrides <y=VDb/
//{{AFX_VIRTUAL(CCaptureDlg) IRNL(9H
public: Qk<W(
virtual BOOL PreTranslateMessage(MSG* pMsg); h`dtcJ0
protected: ~C=I{qzF+
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support q}>1Rr|U`
virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam); #pP4\n-~hU
//}}AFX_VIRTUAL BJ!b LQ
// Implementation J]/TxUE
protected: S-{[3$
HICON m_hIcon; 3^
~M7=k
// Generated message map functions 7l> |G,[c
//{{AFX_MSG(CCaptureDlg) 8A}w}h
virtual BOOL OnInitDialog(); ~4h<nc
afx_msg void OnSysCommand(UINT nID, LPARAM lParam); K,e"@G
afx_msg void OnPaint(); G%w.Z< qy
afx_msg HCURSOR OnQueryDragIcon(); =; Gw=m(
virtual void OnCancel(); Ig75bZz
afx_msg void OnAbout(); M*FUtu
afx_msg void OnBrowse(); 3ny>5A!;2
afx_msg void OnChange(); n 1MZHa,
//}}AFX_MSG ZC 7R f
DECLARE_MESSAGE_MAP() XlUM ~(7+v
}; bh|M]*Pq
#endif "V-k_d "
WZO8|hY
////////////////////////////////////////////////////////////// CaptureDlg.cpp : implementation file E^w2IIw
#include "stdafx.h" fe
PH=C
#include "Capture.h" I|69|^
#include "CaptureDlg.h" $Llv6<B
#include <windowsx.h> KBJw7rra
#pragma comment(lib,"hook.lib") IvGQ7
VLr
#ifdef _DEBUG G n"]<8yl~
#define new DEBUG_NEW 1BT]_ cP
#undef THIS_FILE [xzgk[>5
static char THIS_FILE[] = __FILE__; {Q],rv|;
#endif |S.G#za
#define IDM_SHELL WM_USER+1 |f), dC
BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask); /ivcqVu]
BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask); l?pF?({
UCHAR Key_Table[]={0x78,0x79,0x7a,0x7b,0x6a,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39}; _DsA<SJ]
class CAboutDlg : public CDialog FsQeyh>
{ ws8@yr<R
public: O
]o7
CAboutDlg(); {hQ0=rv<
// Dialog Data !/]F.0
//{{AFX_DATA(CAboutDlg) f%vJmpg
enum { IDD = IDD_ABOUTBOX }; 2N*X zVplN
//}}AFX_DATA zh`!x{Z?^
// ClassWizard generated virtual function overrides X`i'U7%I
//{{AFX_VIRTUAL(CAboutDlg) S3#NGBZ/
protected: YXCltME
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support Z9X<W`
//}}AFX_VIRTUAL _8t5rF
// Implementation ,/0Q($oz
protected: hRAI7xk
//{{AFX_MSG(CAboutDlg) t8X$M;$
//}}AFX_MSG ^b|Z<oF
DECLARE_MESSAGE_MAP() J{>9ctN
}; q#LB 2M
U%%fKL=S
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) iMG)zPj
{ tUX4#{)q(j
//{{AFX_DATA_INIT(CAboutDlg) \H(r }D$u<
//}}AFX_DATA_INIT VB>KT(n-b
} )Z6bMAb0'N
\8j5b+
void CAboutDlg::DoDataExchange(CDataExchange* pDX) 337y,;
{ HI iMq'H^
CDialog::DoDataExchange(pDX); @ig'CF%(
//{{AFX_DATA_MAP(CAboutDlg) {g8uMt\4
//}}AFX_DATA_MAP m]H[$Q
} vTnrSNdSE
1{6 BU!
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) U'(Exr[
//{{AFX_MSG_MAP(CAboutDlg) ;]*V6!6RR
// No message handlers -CV_yySc
//}}AFX_MSG_MAP 0$=Uhi
END_MESSAGE_MAP() -64@}Ts*?
GMk\
l
CCaptureDlg::CCaptureDlg(CWnd* pParent /*=NULL*/) '?| (QU:)F
: CDialog(CCaptureDlg::IDD, pParent) `O~NT'Ed8
{ 5L ]TV\\
//{{AFX_DATA_INIT(CCaptureDlg) mCM7FFl I
m_bControl = FALSE; FHztF$Z
m_bAlt = FALSE; BdWRm=
m_bShift = FALSE; DlC\sm
m_Path = _T("c:\\"); eAqSY s!1
m_Number = _T("0 picture captured."); 0cYd6u@
nCount=0; nsT]Yxo%M
bRegistered=FALSE; XKp$v']u
bTray=FALSE; 0*e)_l!
//}}AFX_DATA_INIT !Cqm=q{K
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 ~\vGwy
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); m(2(Caz{
} T,'{0q
sb1Zm*m6
void CCaptureDlg::DoDataExchange(CDataExchange* pDX) cb36 ~{
{ +SM&_b
CDialog::DoDataExchange(pDX); T >pz/7gb
//{{AFX_DATA_MAP(CCaptureDlg) \R!.VL3Tx$
DDX_Control(pDX, IDC_KEY, m_Key); '*4>&V.yX
DDX_Check(pDX, IDC_CONTROL, m_bControl); Oup5LH!sW
DDX_Check(pDX, IDC_ALT, m_bAlt); 3K{XT),
DDX_Check(pDX, IDC_SHIFT, m_bShift); WUC-*(
DDX_Text(pDX, IDC_PATH, m_Path); s,5SWdb\v
DDX_Text(pDX, IDC_NUMBER, m_Number); yQP!Vt^
//}}AFX_DATA_MAP 0<g;g%
} B: '}SA{
C-wwQbdG/
BEGIN_MESSAGE_MAP(CCaptureDlg, CDialog) Cx
N]fo
//{{AFX_MSG_MAP(CCaptureDlg) {J aulg
ON_WM_SYSCOMMAND() 4[\$3t.L
ON_WM_PAINT() sObH#/l`
ON_WM_QUERYDRAGICON() $ 12mS
ON_BN_CLICKED(ID_ABOUT, OnAbout) F'v3caE
ON_BN_CLICKED(IDC_BROWSE, OnBrowse) ,]:vk|a#;
ON_BN_CLICKED(ID_CHANGE, OnChange) ]1 V,_^D
//}}AFX_MSG_MAP gKp5*
END_MESSAGE_MAP() g]fds Zv
E$u9Jbe
BOOL CCaptureDlg::OnInitDialog() $`KddW0_
{ o+NPe36
CDialog::OnInitDialog(); tEU}?k+:j)
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); Ou26QoT9XI
ASSERT(IDM_ABOUTBOX < 0xF000); /]xu=q2
CMenu* pSysMenu = GetSystemMenu(FALSE); @Feusprs
if (pSysMenu != NULL) ?MW*`U
{ rP5&&Hso
CString strAboutMenu; MC
8t"SB
strAboutMenu.LoadString(IDS_ABOUTBOX); 4t C-msTf
if (!strAboutMenu.IsEmpty()) o{W4@:Ib
{ 2
}9of[
pSysMenu->AppendMenu(MF_SEPARATOR); b`W2^/D
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); j{U#g8
} 1v<,nABuJ6
} sIVVF#0}]
SetIcon(m_hIcon, TRUE); // Set big icon U{ZE|b.?b
SetIcon(m_hIcon, FALSE); // Set small icon [lU0TDq
m_Key.SetCurSel(0); BLepCF38
RegisterHotkey(); b]-~{' +
CMenu* pMenu=GetSystemMenu(FALSE); xSf&*wLE
pMenu->DeleteMenu(SC_MAXIMIZE,MF_BYCOMMAND); k$ya.b<X/
pMenu->DeleteMenu(SC_SIZE,MF_BYCOMMAND); X@["Jjp
pMenu->DeleteMenu(SC_RESTORE,MF_BYCOMMAND); s8r|48I#;
return TRUE; // return TRUE unless you set the focus to a control 4R c_C0O
} i 4}4U
#5Q?Q~E@
void CCaptureDlg::OnSysCommand(UINT nID, LPARAM lParam) z:
;ZPSn
{ #hKaH - j
if ((nID & 0xFFF0) == IDM_ABOUTBOX) C >@T+xOZ
{ `Kt]i5[ "
CAboutDlg dlgAbout; _v[yY3=3
dlgAbout.DoModal(); GlVb |O"
} H3}eFl=i2
else $]
gwaJ:
{ =&!L&M<<
CDialog::OnSysCommand(nID, lParam); I[x+7Y0k9
} (plsL
} wt@Qjbqd8
Q;V*M
void CCaptureDlg::OnPaint() 5xS
ze;
{ (Yv )%2
if (IsIconic()) ]-rhc.Gk@1
{ qe/|u3I<lF
CPaintDC dc(this); // device context for painting <P%<EgOE
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); XEUy,>mR
// Center icon in client rectangle ORc20NFy7
int cxIcon = GetSystemMetrics(SM_CXICON); 1"hd5a
int cyIcon = GetSystemMetrics(SM_CYICON); ?<*mIf:?
CRect rect; lI)RaiMr=
GetClientRect(&rect); A>bpP
int x = (rect.Width() - cxIcon + 1) / 2; MF41q%9p
int y = (rect.Height() - cyIcon + 1) / 2; eG@0:
// Draw the icon I6.!0.G
dc.DrawIcon(x, y, m_hIcon); +WH|nV~lQ
} l%f&vOcd
else }C'H@:/
{ +A!E 6+'
CDialog::OnPaint(); US.7:S-r"
} &|'t>-de,
} 5PRS|R7
+L]$M)*0&
HCURSOR CCaptureDlg::OnQueryDragIcon() _MI8P/
{ QAk.~ob
return (HCURSOR) m_hIcon; <mk'n6B
} "44A#0)B'l
iC.k8r+~
void CCaptureDlg::OnCancel() #+Pk_?
{ k$NNpv&;d
if(bTray) fqY;>Z
DeleteIcon(); +n>_NVe
CDialog::OnCancel(); K<g<xW* X
} [bK5q;#U4
\-h%z%{R
void CCaptureDlg::OnAbout() Uc[@]
{ O/N@Gz[g%
CAboutDlg dlg; zZhA]J
dlg.DoModal(); O'i!}$=g
} 89kxRH\IhG
er%D`VHe
void CCaptureDlg::OnBrowse() 5.TeH@(
{ r2xXS&9!|
CString str; H?a1XEY/
BROWSEINFO bi; CC~:z/4,N
char name[MAX_PATH]; 5Xr<~xr
ZeroMemory(&bi,sizeof(BROWSEINFO)); aQTISX;
bi.hwndOwner=GetSafeHwnd(); !4 =]@eFk
bi.pszDisplayName=name; GI
;
bi.lpszTitle="Select folder"; ->rr4xaK C
bi.ulFlags=BIF_RETURNONLYFSDIRS; 3$yOv"`
LPITEMIDLIST idl=SHBrowseForFolder(&bi); *i)3q+%.
if(idl==NULL) %RS~>pK1
return; YR? ujN
SHGetPathFromIDList(idl,str.GetBuffer(MAX_PATH)); F3Y/Miw
str.ReleaseBuffer(); yd>b2 M
m_Path=str; <=g{E-
if(str.GetAt(str.GetLength()-1)!='\\') 4]P5k6nV
m_Path+="\\";
{}A1[Y|
UpdateData(FALSE); #=81`u
} d J|/.J$d
R?E< }\!
void CCaptureDlg::SaveBmp() 9()d7Y#d/`
{ =mQdM]A)2
CDC dc; uA]!y{"}J
dc.CreateDC("DISPLAY",NULL,NULL,NULL); _ mJP=+i
CBitmap bm; Q&k1' nT5
int Width=GetSystemMetrics(SM_CXSCREEN); .I#ss66h
int Height=GetSystemMetrics(SM_CYSCREEN); *]#(?W.$w
bm.CreateCompatibleBitmap(&dc,Width,Height); u6lcl}'
CDC tdc; 5?=haGn
tdc.CreateCompatibleDC(&dc); ~_GW
CBitmap*pOld=tdc.SelectObject(&bm); "R5! VV
tdc.BitBlt(0,0,Width,Height,&dc,0,0,SRCCOPY); '&+5L.
tdc.SelectObject(pOld); 1.S?(1e"
BITMAP btm; nPRv.h
bm.GetBitmap(&btm); U-6pia/o
DWORD size=btm.bmWidthBytes*btm.bmHeight; 3X>x`
LPSTR lpData=(LPSTR)GlobalAllocPtr(GPTR,size); iU1yJ=
BITMAPINFOHEADER bih; )xxpO$
bih.biBitCount=btm.bmBitsPixel; !$Whftg
bih.biClrImportant=0; N, SbJ Z
bih.biClrUsed=0; 6Qw5_V^0o
bih.biCompression=0; l RM7s(^l
bih.biHeight=btm.bmHeight; QMQ\y8E
bih.biPlanes=1; .kf FaK
bih.biSize=sizeof(BITMAPINFOHEADER); Zjq( ]y
bih.biSizeImage=size; E},^,65
bih.biWidth=btm.bmWidth; =6Q\78b
bih.biXPelsPerMeter=0; !V O^oD7
bih.biYPelsPerMeter=0; L}hc|(:
GetDIBits(dc,bm,0,bih.biHeight,lpData,(BITMAPINFO*)&bih,DIB_RGB_COLORS); T?e(m
static int filecount=0; 9h/JW_
CString name; u_ *DS-
name.Format("pict%04d.bmp",filecount++); G5!J9@Yi
name=m_Path+name; |EZ\+!8N:{
BITMAPFILEHEADER bfh; my+2@ln
bfh.bfReserved1=bfh.bfReserved2=0; |?\J,h
bfh.bfType=((WORD)('M'<< 8)|'B'); c_ Dg0
bfh.bfSize=54+size; #O,;3S
bfh.bfOffBits=54; +LhV4@zC
CFile bf;
<_>xkQbn2
if(bf.Open(name,CFile::modeCreate|CFile::modeWrite)){ $_Kcm"oj
bf.WriteHuge(&bfh,sizeof(BITMAPFILEHEADER)); */)O8`}2
bf.WriteHuge(&bih,sizeof(BITMAPINFOHEADER)); =pnMV"'9
bf.WriteHuge(lpData,size); A V]7l}-
bf.Close(); 0@LC8Bz+'
nCount++; jzb%?8ZJ
} g5@P
GlobalFreePtr(lpData); EC`=nGF
if(nCount==1) \u$[ $R5
m_Number.Format("%d picture captured.",nCount); k}hTSL
else E5QQI9ea
m_Number.Format("%d pictures captured.",nCount); S3N+9*iK
UpdateData(FALSE); ~kp,;!^vr
} ]WvV*FL9D3
iPCDxDLN3V
BOOL CCaptureDlg::PreTranslateMessage(MSG* pMsg) ]9lR:V
sw
{ 1%$Z%?
if(pMsg -> message == WM_KEYDOWN) qq'%9
{ ! z6T_;s
if(pMsg -> wParam == VK_ESCAPE) *b,4qMr
return TRUE; >!3r7LgK
if(pMsg -> wParam == VK_RETURN) *&doI%q
return TRUE; ^Rh`XE
} bR'UhPs-8;
return CDialog::PreTranslateMessage(pMsg); *n x$r[Mqj
} tRVz4fk[G
k@|Go)~
LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam) $nqVE{ksV
{ oxNQNJ!X
if(message==WM_HOTKEY&&lParam==WM_KEYDOWN){ BF/l#)$yK
SaveBmp(); L/xTW
return FALSE; /2>.*H_2
} 1!W'0LPM
if(message==IDM_SHELL&&lParam==WM_RBUTTONUP){ "_
H9]}Q
CMenu pop; 8 -YC#&
pop.LoadMenu(MAKEINTRESOURCE(IDR_MENU1)); 4`/Td?THx
CMenu*pMenu=pop.GetSubMenu(0); c>%%'c
pMenu->SetDefaultItem(ID_EXITICON); g+]o=@
CPoint pt; fk2p}
GetCursorPos(&pt); Y2aN<>f
int id=pMenu->TrackPopupMenu(TPM_RIGHTALIGN|TPM_NONOTIFY|TPM_RETURNCMD|TPM_LEFTBUTTON,pt.x,pt.y,this); &P&VJLA