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:
Upen/1 bA
U MIZ:*j 一、实现方法
T<GD !j( zhL,BTH 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:
[)c|oh% 84cH|j`w #pragma data_seg("shareddata")
4u7>NQUDu HHOOK hHook =NULL; //钩子句柄
nL~
b UINT nHookCount =0; //挂接的程序数目
m(]IxI static UCHAR HotKey[MAX_KEY] = {0}; //热键虚拟键码
\,t<{p_Q static UCHAR HotKeyMask[MAX_KEY] = {0}; //组合掩码, control=4,alt=2,shift=1
Jtk(yp{Zz static HWND hCallWnd[MAX_KEY] = {0}; //window handle associated with hotkey
[p<[83' ] static int KeyCount =0;
~]+
jn static UCHAR MaskBits =0; //00000 Ctrl=4 & Alt=2 & Shift=1
e:occT #pragma data_seg()
|:BYOxAYZ8 j"8N)la 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。
)C6 7qY[P 1yc@q8 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:
E.9k%%X] |/Z)? BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR
:N:8O^D^< cKey,UCHAR cMask)
)S?}huX {
H.K`#W& BOOL bAdded=FALSE;
S`.-D+.68 for(int index=0;index<MAX_KEY;index++){
F\72^,0 if(hCallWnd[index]==0){
I ^92b hCallWnd[index]=hWnd;
F'*4:WD7 HotKey[index]=cKey;
- mXr6R? HotKeyMask[index]=cMask;
{mGWMv bAdded=TRUE;
VHNiTp KeyCount++;
63$m& ]x break;
~cwwB{ }
mr.DP~O:9p }
_"`h~jB return bAdded;
4N:
;Mo&B }
6>J#M //删除热键
MqH~L?~}| BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
z6(Q
3@iO {
Ba~Iy2\x BOOL bRemoved=FALSE;
F
tjm@:X for(int index=0;index<MAX_KEY;index++){
j]SkBZgik if(hCallWnd[index]==hWnd){
?yK\L-ad if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
#1R
%7*$i hCallWnd[index]=NULL;
gvYs<,: HotKey[index]=0;
B[50{;X HotKeyMask[index]=0;
2_v>8B bRemoved=TRUE;
:"]ei@ KeyCount--;
LcF3P
4 break;
:LG%8Z{R }
!CKUkoX }
h65j,v6B }
U 7?ez return bRemoved;
pXa? Q@6 }
eRbO Hj1 k*^W
lCZ3 X.<R['U&\ DLL中的钩子函数如下:
l[ k$O$jo :B~c>: LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
YZ@-0_Z {
\f#ao<vQm BOOL bProcessed=FALSE;
Ymom 0g+f if(HC_ACTION==nCode)
_TF>c:m3 {
Zlo,#q if((lParam&0xc0000000)==0xc0000000){// 有键松开
gZv<_0N switch(wParam)
Hc9pWr"N {
EVsZ:Ra^k case VK_MENU:
9_{!nQC.g MaskBits&=~ALTBIT;
[DwB7l)O( break;
c2/HY8ttRD case VK_CONTROL:
#J_i 5KmXJ MaskBits&=~CTRLBIT;
^EOjq break;
1O4"MeF case VK_SHIFT:
0
HmRl MaskBits&=~SHIFTBIT;
Q2Rj0E` break;
w3D_ c~ default: //judge the key and send message
K-3 _4As break;
!4:,,!T }
oDa{HP\O]W for(int index=0;index<MAX_KEY;index++){
2Fi*)\{ if(hCallWnd[index]==NULL)
5>Q)8`@E continue;
u7d]%<~'$F if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
{,=,0NQKn {
`>Cx!sYhV SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
>^&+,*tsS4 bProcessed=TRUE;
r8rR _M{P }
l.$#IE }
T!bu}KO }
HJm O+ else if((lParam&0xc000ffff)==1){ //有键按下
[eRMlSXA switch(wParam)
E3!twR*Aw {
iY-dM(_:] case VK_MENU:
/&yT2p MaskBits|=ALTBIT;
'S"F=)*- break;
}|,y`ui\ case VK_CONTROL:
"T|\ MaskBits|=CTRLBIT;
;H lv break;
O [/~V= case VK_SHIFT:
gZ3!2T> MaskBits|=SHIFTBIT;
S6]': break;
1oPT8)[U default: //judge the key and send message
>q`X%&l_ break;
o6 /?WR 9 }
F*f)Dv$p for(int index=0;index<MAX_KEY;index++){
]_s]Q_+E if(hCallWnd[index]==NULL)
sXu]k#I^" continue;
YVT^}7# if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
DZue.or {
s><co] SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
AM>:AtY bProcessed=TRUE;
JFZ p^{ }
P*>V6SK>b }
ioggD }
!_@%/I6 if(!bProcessed){ //一般按键事件,为监视键盘的程序留出余地
D_Y;N3E/rS for(int index=0;index<MAX_KEY;index++){
FWg7e3 if(hCallWnd[index]==NULL)
9\F^\h{ continue;
ry'(mM if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
Lmb<)YY SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
\IKr+wlN8 //lParam的意义可看MSDN中WM_KEYDOWN部分
#^Y,,GA }
:"4~VDu }
S4w/
kml3 }
VZ8L9h<{" return CallNextHookEx( hHook, nCode, wParam, lParam );
,P}c92; }
t(Uoi~#[ #XsqTK_nk 抓图程序是一个基于对话框的程序,它在建立对话框的时候调用前面的DLL,登记热键,因此需要将hook.lib添加到工程里,在程序里给出两个DLL函数的定义,也可以写个头文件,再包含进来以下代码:
9L};vkYk# Fr~xN!
BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
e\<I:7%Rg BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
~J|0G6H Gsb]e 为了添加应用程序对热键通知事件的响应,程序中用的办法是重载WindowProc()函数,该函数代码如下:
{8' 5 Q*I/mUP&f LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
p.G7Cs {
x?3p3[y if(message==WM_HOTKEY&&lParam==WM_KEYDOWN)
nB.p}k {
]arP6iN+ //lParam表示是按下还是松开,如果有多个热键,由wParam来区分
{#vo^& B SaveBmp();
SZ_hG D 0 return FALSE;
<\5{R@A*6 }
b{&@Lm0Tn …… //其它处理及默认处理
d1-QkW^0y }
b}fH$.V@ 5M*p1^ > =F9-,"EAI 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。
/SiQw7yp% ^N]*Zf~N? 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。
oW6.c]Vo <6@Db$- 二、编程步骤
$Ix^Rm9c }^H_|;e1p 1、 启动Visual C++,生成一个DLL项目和一个基于对话框的应用程序项目,并将两个项目分别命名为"Hook"和"Capture";
zSu2B6YU} Xy._&&pt 2、 在"Hook"项目中导出AddHotkey()、DeleteHotkey()函数;
J8jbtL O' 2,+H;Ypi! 3、 在"Capture"项目中按照图一所示设置对话框的界面,具体设置参见代码部分;
7P <t8}) 4、 使用Class Wizard在"Capture"项目中添加按钮的鼠标单击消息响应函数,并重载对话框的WindowProc()函数;
GB#7w82 d^7<l_u~ ! 5、 添加代码,编译运行程序。
!Ej<J&e Rh=h{O 三、程序代码
Jps!,Mflc i|t$sBIh ///////////////////////////////////// Hook.h : main header file for the HOOK DLL
99`xY$ #if !defined(AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_)
c0@v`-9 #define AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_
344- ~i* #if _MSC_VER > 1000
r<U }lK #pragma once
MStaP;| #endif // _MSC_VER > 1000
H_{Yr+p #ifndef __AFXWIN_H__
,D8Tca\v #error include 'stdafx.h' before including this file for PCH
gY%-0@g #endif
)lZb=t #include "resource.h" // main symbols
%EuSP0 class CHookApp : public CWinApp
Pu=YQ
#F' {
J? C"be= public:
FGC[yz1g: CHookApp();
Ae"B]Cxb_X // Overrides
F
J)la9 // ClassWizard generated virtual function overrides
avQwbAh[ //{{AFX_VIRTUAL(CHookApp)
R8HFyP public:
+p2)uXqW virtual BOOL InitInstance();
.L}ar7 virtual int ExitInstance();
j:0z/gHp$ //}}AFX_VIRTUAL
`sSI; + //{{AFX_MSG(CHookApp)
k]Yd4CC2 // NOTE - the ClassWizard will add and remove member functions here.
q N>j2~ // DO NOT EDIT what you see in these blocks of generated code !
*p"%cas //}}AFX_MSG
%
74}H8q_z DECLARE_MESSAGE_MAP()
2?&h{PA+ };
;aSEv"iWX LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam, LPARAM lParam);
#soWX_> BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
#(OL!B BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
bS*9eX=K BOOL InitHotkey();
8"+Kz BOOL UnInit();
L!\I>a5C0G #endif
;X8eZQ #jQITS7 //////////////////////////////////////// Hook.cpp : Defines the initialization routines for the DLL.
lyP<&<Y5 #include "stdafx.h"
[L:,A{rve #include "hook.h"
,+WDa%R #include <windowsx.h>
oYW:ptJ #ifdef _DEBUG
HJDM\j*5 #define new DEBUG_NEW
)gZ yW
#undef THIS_FILE
WHL@]^E@m static char THIS_FILE[] = __FILE__;
qTG/7tn
" #endif
|1#*`2j\=9 #define MAX_KEY 100
sq_
f[! #define CTRLBIT 0x04
OF}vY0oiw? #define ALTBIT 0x02
z&w@67
>j #define SHIFTBIT 0x01
u-D%: lz85 #pragma data_seg("shareddata")
Ay[6rUO HHOOK hHook =NULL;
8/k*"^3 UINT nHookCount =0;
F8q|$[nH static UCHAR HotKey[MAX_KEY] = {0}; //hotkey
^5OR%N) static UCHAR HotKeyMask[MAX_KEY] = {0}; //flag for hotkey, value is VK_CONTRL or VK_NEMU or VK_SHIFT
HN\9d static HWND hCallWnd[MAX_KEY] = {0}; //window associated with hotkey
0y*8;7-|r) static int KeyCount =0;
Uo# Pe@ieQ static UCHAR MaskBits =0; //00000 Ctrl Alt Shift
@,$>H7o #pragma data_seg()
wtK+\Qnb HINSTANCE hins;
NO QM:tBO> void VerifyWindow();
)KG.:BO< BEGIN_MESSAGE_MAP(CHookApp, CWinApp)
3= PRe //{{AFX_MSG_MAP(CHookApp)
H8X{!/,^ // NOTE - the ClassWizard will add and remove mapping macros here.
WOh?/F[@u // DO NOT EDIT what you see in these blocks of generated code!
J%{>I //}}AFX_MSG_MAP
/@:I\&{f'9 END_MESSAGE_MAP()
^)TZHc2a[ DKR2b`J CHookApp::CHookApp()
qeypa! {
nPE{Gp) } // TODO: add construction code here,
r3'0{Nn+ // Place all significant initialization in InitInstance
8K'3iw>z }
G@s
rQum( XsEDI?p2 CHookApp theApp;
09/Mg LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
,VI2dNst\ {
6YNd;,it>p BOOL bProcessed=FALSE;
L\aG.\ if(HC_ACTION==nCode)
voiWf?X {
5y0N }} if((lParam&0xc0000000)==0xc0000000){// Key up
f]Xh7m(Gh switch(wParam)
UZz/v#y~ {
`fS$@{YI_ case VK_MENU:
zt6GJz1q MaskBits&=~ALTBIT;
Kqm2TMO]>V break;
m9 1Gc?c case VK_CONTROL:
@kd`9Yw MaskBits&=~CTRLBIT;
G8}k9?26( break;
jBb:) case VK_SHIFT:
A{MMY{K3 MaskBits&=~SHIFTBIT;
qx|~H'UuBN break;
\(C6|-:GY default: //judge the key and send message
UyENzK<%u break;
~6DaM! }
a[I
: ^S for(int index=0;index<MAX_KEY;index++){
mb,\ wZ if(hCallWnd[index]==NULL)
;?4EVZ#o continue;
%py3fzg if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
T,r?% G{XE {
6/6M.p SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
g%TOYZr!X bProcessed=TRUE;
zc K`hS }
{u~JR(C: }
}]<0!q &xB }
DHQS7%)f` else if((lParam&0xc000ffff)==1){ //Key down
xa8;"Y~"bg switch(wParam)
}p5_JXBV {
Kl_(4kQE_ case VK_MENU:
3$G &~A{ MaskBits|=ALTBIT;
$t0o*i{ break;
f\xmv|8 case VK_CONTROL:
iSbPOC7 MaskBits|=CTRLBIT;
||D PIn] break;
,+~8R" case VK_SHIFT:
x n?$@ MaskBits|=SHIFTBIT;
4(
$p8J break;
*+(rQ";x default: //judge the key and send message
%tB7 &%ut break;
2ca#@??R }
^p)#;$6b for(int index=0;index<MAX_KEY;index++)
8wV`mdKN {
'hR0JXy if(hCallWnd[index]==NULL)
GHY+q{'#V_ continue;
ZmI0|r}QbY if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
K
@RGvP {
DQ<4`wE M SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
nr&bpA/ bProcessed=TRUE;
zX lcu_rc }
Fs"i fn0 }
GXG 7P,p, }
9fm9xTL if(!bProcessed){
>v2/0>U for(int index=0;index<MAX_KEY;index++){
.+A)^A if(hCallWnd[index]==NULL)
_ _!LTpp continue;
pu~b\&^G if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
,oykOda:| SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
(@->AJF1\ }
`*6|2 }
[;H-HpBaa }
4M#i_.`z return CallNextHookEx( hHook, nCode, wParam, lParam );
!0dQfj^_ }
i-PK59VZ8f p4V* %A&w BOOL InitHotkey()
|sd G<+ {
NOg/rDs'{ if(hHook!=NULL){
0<7sM#sI! nHookCount++;
auga`* return TRUE;
Sl/]1[|mb }
u@1 2:U$ else
9 ,:#Q<UM hHook=SetWindowsHookEx(WH_KEYBOARD,(HOOKPROC)KeyboardProc,hins,0);
k@
<dru if(hHook!=NULL)
-L+kt_> nHookCount++;
,OWk[0/ return (hHook!=NULL);
UB/"&I uo }
h4jo<yp\ BOOL UnInit()
v4<W57oH {
A
0v=7
] if(nHookCount>1){
9u^M{6 nHookCount--;
)X?oBNsj return TRUE;
M6mgJonN| }
f"RC(("6W BOOL unhooked = UnhookWindowsHookEx(hHook);
nfbR"E
jXr if(unhooked==TRUE){
/5)*epF+ nHookCount=0;
QEg[ hHook=NULL;
~Oa$rqu%m }
eZEk$W% return unhooked;
<o/!M6^: }
b{qN7X~> "I66@d? BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
~P#mvQE) {
0N^+d,Xt. BOOL bAdded=FALSE;
ltfKqY- for(int index=0;index<MAX_KEY;index++){
jYi,oE if(hCallWnd[index]==0){
1aQm r=, hCallWnd[index]=hWnd;
vhPlH0 HotKey[index]=cKey;
yUj`vu2 HotKeyMask[index]=cMask;
o3V\ bAdded=TRUE;
<Y."()}GeH KeyCount++;
Lo3N)~5 break;
/cb`%"Z }
JcUU#> }
}/dk2!?ig return bAdded;
0KnL{Cj }
M^[;{p2uZ _tJt
eDRY BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
] L97k(:Ib {
hH 5}%/vF BOOL bRemoved=FALSE;
TKM^ for(int index=0;index<MAX_KEY;index++){
Asv]2> x if(hCallWnd[index]==hWnd){
)w0x{_ if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
+!0K]$VZs hCallWnd[index]=NULL;
0S^&A?$= HotKey[index]=0;
qmFG HotKeyMask[index]=0;
kL%ot<rt)w bRemoved=TRUE;
@Wc5r# KeyCount--;
.6P.r} break;
YZ5,K6u }
`mzlOB }
M2Jf-2 }
g35!a<JW
return bRemoved;
/1MmOB }
"aOs#4N RqgN<&g? void VerifyWindow()
U xBd14-R_ {
kzKej"a; for(int i=0;i<MAX_KEY;i++){
Ec!!9dgRQ if(hCallWnd
!=NULL){ S7)qq
if(!IsWindow(hCallWnd)){ ?>Sv_0
hCallWnd=NULL; Ss+F
HotKey=0; wkM1tKhy/
HotKeyMask=0; /QY F|%7!
KeyCount--; iqvLu{
} eJ99 W=
} Up{[baWF
} :D*U4<
/u
} =..Bh8P71!
aOH|[
BOOL CHookApp::InitInstance() B:Ts_9*
{ J-hJqR*;K
AFX_MANAGE_STATE(AfxGetStaticModuleState()); Jqj!k*=/
hins=AfxGetInstanceHandle(); H:@hCO[a
InitHotkey(); zbmC?2$
return CWinApp::InitInstance(); Z+&V >
} ^1najUpQ_n
$DoR@2~y
int CHookApp::ExitInstance() -N8rs[c
{ x="Wqcnj{
VerifyWindow(); B+K6(^j,,y
UnInit(); f`n4'dG
return CWinApp::ExitInstance(); 1(gs({
} +4s]#{mP
zY*9M3(X
////////////////////////////////////////////////////////////////////// CaptureDlg.h : header file o]4]fLQ
#if !defined(AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_) LH5Z@*0#
#define AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_ Ipk;Nq
#if _MSC_VER > 1000 C(ij_>
#pragma once 5MVa;m
#endif // _MSC_VER > 1000 j6GIB_
E+aePo U
class CCaptureDlg : public CDialog VHxBs
{ *4}_2"[
// Construction @@AL@.*
public: 0~bUW V
BOOL bTray; FJ_7<4ET
BOOL bRegistered; <rBW6o7
BOOL RegisterHotkey(); `,qft[1
UCHAR cKey; 4j#y?^s
UCHAR cMask; L,}'ST
void DeleteIcon(); g'7E6n"!,
void AddIcon(); suY47DCX)
UINT nCount; zMsup4cl
void SaveBmp(); T Rv
CCaptureDlg(CWnd* pParent = NULL); // standard constructor =SJ#6uFS
// Dialog Data QQrldc(I
//{{AFX_DATA(CCaptureDlg) G?s9c0f
enum { IDD = IDD_CAPTURE_DIALOG }; o;$xN3f,
CComboBox m_Key; 'JOUx_@z
BOOL m_bControl; ;7'O=%
BOOL m_bAlt; $Zu?Gd?
BOOL m_bShift; fpR|+`k
CString m_Path; PVI Oe}N
CString m_Number; /65YHXg,
//}}AFX_DATA -G(me"Cu
// ClassWizard generated virtual function overrides .nPOjwEx&Y
//{{AFX_VIRTUAL(CCaptureDlg) JOJ.79CT
public: #EH=tJgO|J
virtual BOOL PreTranslateMessage(MSG* pMsg); BU:;;iV8
protected: =W~7fs
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support ON,[!pc
virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam); ~CNB3r5R
//}}AFX_VIRTUAL @G4Z
// Implementation ], lLDUZ\
protected: C%z)D1-
HICON m_hIcon; `
,\b_SFg
// Generated message map functions ("8 Hku?
//{{AFX_MSG(CCaptureDlg) D0Dz@25-
virtual BOOL OnInitDialog();
@ap!3o8,9
afx_msg void OnSysCommand(UINT nID, LPARAM lParam); dKzG,/1W[m
afx_msg void OnPaint(); > Vm}u`x
afx_msg HCURSOR OnQueryDragIcon(); "wgPPop
virtual void OnCancel(); M+ +Dk7B
afx_msg void OnAbout(); EtcT:k?y
afx_msg void OnBrowse(); CD&a_-'z$K
afx_msg void OnChange(); $94lF~
//}}AFX_MSG y\T$) XGV
DECLARE_MESSAGE_MAP() tgF~5
o}?
}; U#z"t&o=L
#endif jZA1fV
tm~9XFQ<
////////////////////////////////////////////////////////////// CaptureDlg.cpp : implementation file 0>28o.
#include "stdafx.h" ;/Hr ZhOE
#include "Capture.h" "*bLFORkq'
#include "CaptureDlg.h" 3Bl|~K;-
#include <windowsx.h> Z>g72I%X
#pragma comment(lib,"hook.lib") "V[j&B)P
#ifdef _DEBUG w!m4>w
#define new DEBUG_NEW T8S&9BM7
#undef THIS_FILE L1SX2F8
static char THIS_FILE[] = __FILE__; ?w:\0j5~
#endif k4']q
#define IDM_SHELL WM_USER+1 i]ZGq7YJ%
BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask); U1YqyG8
BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask); Y/sav;
UCHAR Key_Table[]={0x78,0x79,0x7a,0x7b,0x6a,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39}; 'gY?=,dF>
class CAboutDlg : public CDialog SY,ns*>1F
{ nt2b}u>*
public: I):c#
CAboutDlg(); WsHDIp
// Dialog Data #:?:gY<
//{{AFX_DATA(CAboutDlg) .#&)%}GC
enum { IDD = IDD_ABOUTBOX }; tj;47UtH
//}}AFX_DATA y4kn2Mw;
// ClassWizard generated virtual function overrides & DP"RWT/
//{{AFX_VIRTUAL(CAboutDlg) OeQ[-e
protected: -HF?1c
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support k6#$Nb606
//}}AFX_VIRTUAL e|tx`yA
// Implementation jkk%zu
protected: zZMKgFR@
//{{AFX_MSG(CAboutDlg) (dg,w*t'
//}}AFX_MSG <WUgH6"
DECLARE_MESSAGE_MAP() PhAfEsD
}; jRsl/dmy
Tb]7# v
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) ;mpY cpI
{ a4s't%
P
//{{AFX_DATA_INIT(CAboutDlg) \|>%/P
//}}AFX_DATA_INIT lat5n&RP Y
} dk7x<$h-h0
/`m*PgJ
void CAboutDlg::DoDataExchange(CDataExchange* pDX) ;Rv WF )
{ o(tJc}Mh+(
CDialog::DoDataExchange(pDX); @fA{;@N
//{{AFX_DATA_MAP(CAboutDlg) CbZ;gjgY*
//}}AFX_DATA_MAP |eRE'Wd0
} zfop-qDOc
kwp%5C-S
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) 'd
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//{{AFX_MSG_MAP(CAboutDlg) #w''WOk@ZG
// No message handlers f>Rux1Je4
//}}AFX_MSG_MAP x_3B) &9
END_MESSAGE_MAP() Ry+?#P+
@x1cV_s[
CCaptureDlg::CCaptureDlg(CWnd* pParent /*=NULL*/) ;L$-_Z
: CDialog(CCaptureDlg::IDD, pParent) -7!L]BcZ.
{ V?OTP&+J%
//{{AFX_DATA_INIT(CCaptureDlg) |M?s[}ll
m_bControl = FALSE; +&\.
]Pp
m_bAlt = FALSE; N_92,xI#
m_bShift = FALSE; {`):X _$T
m_Path = _T("c:\\"); yV`Tw"p
m_Number = _T("0 picture captured."); GJdL1ptc
nCount=0; u.A}&'H
bRegistered=FALSE; 6?xF!VIL
bTray=FALSE; +X#6dv$
//}}AFX_DATA_INIT m^FKE:
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 ?n#$y@U
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); #e.x]v:
} 4Q!%16
P
3^P;mQ$p1
void CCaptureDlg::DoDataExchange(CDataExchange* pDX) s/ABT.ZO
{ 8Y-*rpLy
CDialog::DoDataExchange(pDX); +tk`$g
//{{AFX_DATA_MAP(CCaptureDlg) Z,p@toj'
DDX_Control(pDX, IDC_KEY, m_Key); d%I7OBBx@
DDX_Check(pDX, IDC_CONTROL, m_bControl); o~'p&f
DDX_Check(pDX, IDC_ALT, m_bAlt); qUfoEpW2=6
DDX_Check(pDX, IDC_SHIFT, m_bShift); GLIY!BU<C
DDX_Text(pDX, IDC_PATH, m_Path); )&E]
DDX_Text(pDX, IDC_NUMBER, m_Number);
3*Q=)}
//}}AFX_DATA_MAP yMdu
Zmkc
} dA~_[x:Z
r\QV%09R
BEGIN_MESSAGE_MAP(CCaptureDlg, CDialog) aEzf*a|fSV
//{{AFX_MSG_MAP(CCaptureDlg) or#]
![7N
ON_WM_SYSCOMMAND() JFI*Pt;X9
ON_WM_PAINT() sPc}hG+N
ON_WM_QUERYDRAGICON() vw>(JCR
ON_BN_CLICKED(ID_ABOUT, OnAbout) ktPM66`b
ON_BN_CLICKED(IDC_BROWSE, OnBrowse) .RmFYV0,
ON_BN_CLICKED(ID_CHANGE, OnChange) sf$hsPC^
//}}AFX_MSG_MAP GPni%P#a@0
END_MESSAGE_MAP() ts<\n-f
}8AH/
BOOL CCaptureDlg::OnInitDialog() kxJs4BY0
{ 0e&&k
CDialog::OnInitDialog(); 5=*i!c
_m
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); <#8}![3Q
ASSERT(IDM_ABOUTBOX < 0xF000); <}RD]Sc$1
CMenu* pSysMenu = GetSystemMenu(FALSE); HY_>sD
if (pSysMenu != NULL) CF3x\6.q}
{ R<fF
^^
CString strAboutMenu; p8XvfM
strAboutMenu.LoadString(IDS_ABOUTBOX); q~#>MB}".
if (!strAboutMenu.IsEmpty()) _N:$|O#
{ sCJ|U6Q-
pSysMenu->AppendMenu(MF_SEPARATOR); 8D>5(Dg-
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); !\|
} 9{3_2CIL
} [f\Jcjc
SetIcon(m_hIcon, TRUE); // Set big icon IG|u;PH<
SetIcon(m_hIcon, FALSE); // Set small icon <V)z{uK
m_Key.SetCurSel(0); 7Cp/{l;d
RegisterHotkey(); ]["%e9#aX
CMenu* pMenu=GetSystemMenu(FALSE); {k=3OIp
pMenu->DeleteMenu(SC_MAXIMIZE,MF_BYCOMMAND); KaMg[G
pMenu->DeleteMenu(SC_SIZE,MF_BYCOMMAND); )-"<19eu
pMenu->DeleteMenu(SC_RESTORE,MF_BYCOMMAND); ]35`N<Ac
return TRUE; // return TRUE unless you set the focus to a control MA_YMxP.'
} M._E$y,5
"c} en[
void CCaptureDlg::OnSysCommand(UINT nID, LPARAM lParam) Vo^J2[U
{ F3vywN1$,
if ((nID & 0xFFF0) == IDM_ABOUTBOX) CAx$A[f<
{ ?7pn%_S
CAboutDlg dlgAbout; > dVhIbG
dlgAbout.DoModal(); ~-NSIV:f
} yp4[EqME
else p&$PsgR
{ |Isn<|_
CDialog::OnSysCommand(nID, lParam); >`3F`@1L0
} PSv 5tQhm
} (;=|2N>7
"*/IP9?]
void CCaptureDlg::OnPaint() ewT
K2
{ OLt0Q.{
if (IsIconic()) >Q<XyAH~
{ BPkL3Ev1V
CPaintDC dc(this); // device context for painting -rYb{<;ST
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); L<oQKe7Q:
// Center icon in client rectangle T~$Eh6
D
int cxIcon = GetSystemMetrics(SM_CXICON); _'Jjt9@S
int cyIcon = GetSystemMetrics(SM_CYICON); L|<j/bP
CRect rect; b 1.S21
GetClientRect(&rect); L_9uwua.B~
int x = (rect.Width() - cxIcon + 1) / 2; $DfK}CT
int y = (rect.Height() - cyIcon + 1) / 2; 117lhx].'
// Draw the icon UrciCOQf
dc.DrawIcon(x, y, m_hIcon); Bx\ o8k
} /~s<@<1!X
else '\d
ldg#P
{
BUwL?
CDialog::OnPaint(); 0\"#Xa+}8
} <uBRLe`)
} huA?*fat
x6JV@wA&
HCURSOR CCaptureDlg::OnQueryDragIcon() 2gklGDJD
{ ~9APc{"A
return (HCURSOR) m_hIcon; jP/Vqe%%8
} ;=IJHk1&
<sm"3qs"_
void CCaptureDlg::OnCancel() vO$cF*
{ m;4ti9
if(bTray) ceJ#>Rj
DeleteIcon(); "9^b1UH<
CDialog::OnCancel(); \tvL<U"'
} s*
u1n+Zq
ZJcX-Z!\
void CCaptureDlg::OnAbout() (
./MFf
{ f?^-JZ
CAboutDlg dlg; :zo5`[P
dlg.DoModal(); 1yz%ud-l
} V:j^!*
E<tR8='F
void CCaptureDlg::OnBrowse() Eo^m; p5
{ "(W;rl
CString str; CV^%'HIs?+
BROWSEINFO bi; Dz$w6d
char name[MAX_PATH]; LKI\(%ba#
ZeroMemory(&bi,sizeof(BROWSEINFO)); ,<K+.7,)E
bi.hwndOwner=GetSafeHwnd(); ZY7-.
bi.pszDisplayName=name; %E#Ubm!
bi.lpszTitle="Select folder"; b==jlYa=
bi.ulFlags=BIF_RETURNONLYFSDIRS; "8uNa
LPITEMIDLIST idl=SHBrowseForFolder(&bi); p*g)-/mA
if(idl==NULL) un!v1g9O
return; 3O4lGe#u
SHGetPathFromIDList(idl,str.GetBuffer(MAX_PATH)); V;R gO}
str.ReleaseBuffer(); g i/k#3_m
m_Path=str; Iv3yDL;
if(str.GetAt(str.GetLength()-1)!='\\') /kyO,g$9
m_Path+="\\"; .]KC*2
UpdateData(FALSE); Tx.N#,T|
} pCE
GZV,d@
aj5HtP-
void CCaptureDlg::SaveBmp() 'gf[Wjb,%
{ z8X7Y
>+SA
CDC dc; l eC!Yj
dc.CreateDC("DISPLAY",NULL,NULL,NULL); R/~!km
CBitmap bm; t.(
`$
int Width=GetSystemMetrics(SM_CXSCREEN); n#">k%bD
int Height=GetSystemMetrics(SM_CYSCREEN); E;a,].
bm.CreateCompatibleBitmap(&dc,Width,Height); T~E;@weR
CDC tdc; z x-[@G
tdc.CreateCompatibleDC(&dc); nCq'=L,m
CBitmap*pOld=tdc.SelectObject(&bm); 30sJ"hF9
tdc.BitBlt(0,0,Width,Height,&dc,0,0,SRCCOPY); QD@O!};
T
tdc.SelectObject(pOld); ?\Z pVL<>
BITMAP btm; B'yjMY![
bm.GetBitmap(&btm); [BE_^d5&
DWORD size=btm.bmWidthBytes*btm.bmHeight; =>
(g_\
LPSTR lpData=(LPSTR)GlobalAllocPtr(GPTR,size); R0Vt_7
BITMAPINFOHEADER bih; Eg)24C R 4
bih.biBitCount=btm.bmBitsPixel; (%B{=w}8
bih.biClrImportant=0; ~0p8joOH
bih.biClrUsed=0; `]5qIKopL
bih.biCompression=0; $)#orZtzr
bih.biHeight=btm.bmHeight; Al^tM0T^
bih.biPlanes=1; A$@;Q5/2
bih.biSize=sizeof(BITMAPINFOHEADER); JK!(\Ae.
bih.biSizeImage=size; !)]/?&uo
bih.biWidth=btm.bmWidth; NVM_.vL
bih.biXPelsPerMeter=0; %
G=cKM
bih.biYPelsPerMeter=0; a/V,iCiH
GetDIBits(dc,bm,0,bih.biHeight,lpData,(BITMAPINFO*)&bih,DIB_RGB_COLORS); hi"C<b.
static int filecount=0; 6$b=Tr=0
CString name; ;U(]#pW!t
name.Format("pict%04d.bmp",filecount++); $4{sPHi)I
name=m_Path+name; m \)B=H!bz
BITMAPFILEHEADER bfh; xrg"/?84
bfh.bfReserved1=bfh.bfReserved2=0; "B3jq^
bfh.bfType=((WORD)('M'<< 8)|'B'); AY52j
bfh.bfSize=54+size; IS]A<}j/-
bfh.bfOffBits=54; HUx`RX0>
CFile bf; p :xyy*I
if(bf.Open(name,CFile::modeCreate|CFile::modeWrite)){ 2PQBUq
bf.WriteHuge(&bfh,sizeof(BITMAPFILEHEADER)); '/I`dj
bf.WriteHuge(&bih,sizeof(BITMAPINFOHEADER)); cNd&C'/N
bf.WriteHuge(lpData,size); `Q*`\-8J
bf.Close(); JQKXbsXS
nCount++; F7<mm7BGZ
} }eLApFHEDg
GlobalFreePtr(lpData); GKoYT{6
if(nCount==1) <SNr\/aCRi
m_Number.Format("%d picture captured.",nCount); *F( qg%1+
else 'UX^]
m_Number.Format("%d pictures captured.",nCount); eX$KH;M
UpdateData(FALSE); toY_1
} ^&<M""Z
s&E,$|80
BOOL CCaptureDlg::PreTranslateMessage(MSG* pMsg) qArR5OJ
{ ZjxF@`H
if(pMsg -> message == WM_KEYDOWN) jemb/:E
{ 5ngs1ZF@
if(pMsg -> wParam == VK_ESCAPE) .eN"s'
return TRUE; AZ!/{1 Az
if(pMsg -> wParam == VK_RETURN) AW r2Bv
return TRUE; |5vJ:'` I
} hrKeOwKHU
return CDialog::PreTranslateMessage(pMsg); 8]#FvgX
} }n&nuaj
"bej#'M#
LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam) +<\LY(o
{ 8[@,i|kgg0
if(message==WM_HOTKEY&&lParam==WM_KEYDOWN){ +'m9b7+v
SaveBmp(); 11l=zv
return FALSE; ->I.D?p
} FsqH:I4O
if(message==IDM_SHELL&&lParam==WM_RBUTTONUP){ 5X^\AW
CMenu pop; {qw'gJmX
pop.LoadMenu(MAKEINTRESOURCE(IDR_MENU1)); q_[y|ETJ]
CMenu*pMenu=pop.GetSubMenu(0); --]blP7
pMenu->SetDefaultItem(ID_EXITICON); 5J`w8[;
CPoint pt; I;@q`Tm
GetCursorPos(&pt); 3N > V
sl
int id=pMenu->TrackPopupMenu(TPM_RIGHTALIGN|TPM_NONOTIFY|TPM_RETURNCMD|TPM_LEFTBUTTON,pt.x,pt.y,this); W"%n5)
if(id==ID_EXITICON) . gy:Pl]w
DeleteIcon(); @]Vcl"t
else if(id==ID_EXIT) sO) H#G
OnCancel(); |}d^lQ9
return FALSE; B*G]Dr)e
} cWQJ9.:7
LRESULT res= CDialog::WindowProc(message, wParam, lParam); @|(cr: (=H
if(message==WM_SYSCOMMAND&&wParam==SC_MINIMIZE) {e&fB