button.docx
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button
/*File:
button.c--Buttontypewidgets
*
*Copyright（C）1993JohannesRuscheinski
*Copyright（C）1993DavidMetcalfe
*Copyright（C）1994AlexandreJulliard
*
*Thislibraryisfreesoftware;youcanredistributeitand/or
*modifyitunderthetermsoftheGNULesserGeneralPublic
*LicenseaspublishedbytheFreeSoftwareFoundation;either
*version2.1oftheLicense,or（atyouroption）anylaterversion.
*
*Thislibraryisdistributedinthehopethatitwillbeuseful,
*butWITHOUTANYWARRANTY;withouteventheimpliedwarrantyof
*MERCHANTABILITYorFITNESSFORAPARTICULARPURPOSE.SeetheGNU
*LesserGeneralPublicLicenseformoredetails.
*
*YoushouldhavereceivedacopyoftheGNULesserGeneralPublic
*Licensealongwiththislibrary;ifnot,writetotheFreeSoftware
*Foundation,Inc.,59TemplePlace,Suite330,Boston,MA02111-1307USA
*/
#include
/*GetWindowLongoffsetsforwindowextrainformation*/
#defineSTATE_GWL_OFFSET0
#defineHFONT_GWL_OFFSET（sizeof（LONG））
#defineHIMAGE_GWL_OFFSET（HFONT_GWL_OFFSET*sizeof（LONG））
#defineNB_EXTRA_BYTES（HIMAGE_GWL_OFFSET*sizeof（LONG））
/*Buttonstatevalues*/
#defineBUTTON_UNCHECKED0x00
#defineBUTTON_CHECKED0x01
#defineBUTTON_3STATE0x02
#defineBUTTON_HIGHLIGHTED0x04
#defineBUTTON_HASFOCUS0x08
#defineBUTTON_NSTATES0x0F
/*undocumentedflags*/
#defineBUTTON_BTNPRESSED0x40
#defineBUTTON_UNKNOWN20x20
#defineBUTTON_UNKNOWN30x10
#defineBUTTON_NOTIFY_PARENT（hWnd,code）\
do{/*Notifyparentwhichhascreatedthisbuttoncontrol*/\
TRACE（"notification"#code"senttohwnd=%p\n",GetParent（hWnd））;\
SendMessageW（GetParent（hWnd）,WM_COMMAND,\
MAKEWPARAM（GetWindowLongPtrW（（hWnd）,GWLP_ID）,（code））,\
（LPARAM）（hWnd））;\
}while（0）
staticUINTBUTTON_CalcLabelRect（HWNDhwnd,HDChdc,RECT*rc）;
staticvoidPB_Paint（HWNDhwnd,HDChDC,UINTaction）;
staticvoidCB_Paint（HWNDhwnd,HDChDC,UINTaction）;
staticvoidGB_Paint（HWNDhwnd,HDChDC,UINTaction）;
staticvoidUB_Paint（HWNDhwnd,HDChDC,UINTaction）;
staticvoidOB_Paint（HWNDhwnd,HDChDC,UINTaction）;
staticvoidBUTTON_CheckAutoRadioButton（HWNDhwnd）;
staticLRESULTWINAPIButtonWndProcA（HWNDhWnd,UINTuMsg,WPARAMwParam,LPARAMlParam）;
staticLRESULTWINAPIButtonWndProcW（HWNDhWnd,UINTuMsg,WPARAMwParam,LPARAMlParam）;
#defineMAX_BTN_TYPE12
staticconstWORDmaxCheckState[MAX_BTN_TYPE]=
{
BUTTON_UNCHECKED,/*BS_PUSHBUTTON*/
BUTTON_UNCHECKED,/*BS_DEFPUSHBUTTON*/
BUTTON_CHECKED,/*BS_CHECKBOX*/
BUTTON_CHECKED,/*BS_AUTOCHECKBOX*/
BUTTON_CHECKED,/*BS_RADIOBUTTON*/
BUTTON_3STATE,/*BS_3STATE*/
BUTTON_3STATE,/*BS_AUTO3STATE*/
BUTTON_UNCHECKED,/*BS_GROUPBOX*/
BUTTON_UNCHECKED,/*BS_USERBUTTON*/
BUTTON_CHECKED,/*BS_AUTORADIOBUTTON*/
BUTTON_UNCHECKED,/*Notdefined*/
BUTTON_UNCHECKED/*BS_OWNERDRAW*/
};
typedefvoid（*pfPaint）（HWNDhwnd,HDChdc,UINTaction）;
staticconstpfPaintbtnPaintFunc[MAX_BTN_TYPE]=
{
PB_Paint,/*BS_PUSHBUTTON*/
PB_Paint,/*BS_DEFPUSHBUTTON*/
CB_Paint,/*BS_CHECKBOX*/
CB_Paint,/*BS_AUTOCHECKBOX*/
CB_Paint,/*BS_RADIOBUTTON*/
CB_Paint,/*BS_3STATE*/
CB_Paint,/*BS_AUTO3STATE*/
GB_Paint,/*BS_GROUPBOX*/
UB_Paint,/*BS_USERBUTTON*/
CB_Paint,/*BS_AUTORADIOBUTTON*/
NULL,/*Notdefined*/
OB_Paint/*BS_OWNERDRAW*/
};
staticHBITMAPhbitmapCheckBoxes=0;
staticWORDcheckBoxWidth=0,checkBoxHeight=0;
/*********************************************************************
*buttonclassdescriptor
*/
conststructbuiltin_class_descrBUTTON_builtin_class=
{
#ifdef__REACTOS__
L"Button",/*name*/
CS_DBLCLKS|CS_VREDRAW|CS_HREDRAW|CS_PARENTDC,/*style*/
ButtonWndProcW,/*procW*/
ButtonWndProcA,/*procA*/
NB_EXTRA_BYTES,/*extra*/
（LPWSTR）IDC_ARROW,/*cursor*/
0/*brush*/
#else
"Button",/*name*/
CS_DBLCLKS|CS_VREDRAW|CS_HREDRAW|CS_PARENTDC,/*style*/
ButtonWndProcA,/*procA*/
ButtonWndProcW,/*procW*/
NB_EXTRA_BYTES,/*extra*/
IDC_ARROW,/*cursor*/
0/*brush*/
#endif
};
__inlinestaticLONGget_button_state（HWNDhwnd）
{
returnGetWindowLongW（hwnd,STATE_GWL_OFFSET）;
}
__inlinestaticvoidset_button_state（HWNDhwnd,LONGstate）
{
SetWindowLongW（hwnd,STATE_GWL_OFFSET,state）;
}
__inlinestaticHFONTget_button_font（HWNDhwnd）
{
return（HFONT）GetWindowLongPtrW（hwnd,HFONT_GWL_OFFSET）;
}
__inlinestaticvoidset_button_font（HWNDhwnd,HFONTfont）
{
SetWindowLongPtrW（hwnd,HFONT_GWL_OFFSET,（LONG）font）;
}
__inlinestaticUINTget_button_type（LONGwindow_style）
{
return（window_style&0x0f）;
}
/*paintabuttonofanytype*/
__inlinestaticvoidpaint_button（HWNDhwnd,LONGstyle,UINTaction）
{
if（btnPaintFunc[style]&&IsWindowVisible（hwnd））
{
HDChdc=GetDC（hwnd）;
btnPaintFunc[style]（hwnd,hdc,action）;
ReleaseDC（hwnd,hdc）;
}
}
/*retrievethebuttontext;returnedbuffermustbefreedbycaller*/
__inlinestaticWCHAR*get_button_text（HWNDhwnd）
{
INTlen=512;
WCHAR*buffer=HeapAlloc（GetProcessHeap（）,0,（len+1）*sizeof（WCHAR））;
if（buffer）InternalGetWindowText（hwnd,buffer,len+1）;
returnbuffer;
}
/***********************************************************************
*ButtonWndProc_common
*/
staticLRESULTWINAPIButtonWndProc_common（HWNDhWnd,UINTuMsg,
WPARAMwParam,LPARAMlParam,BOOLunicode）
{
RECTrect;
POINTpt;
LONGstyle=GetWindowLongW（hWnd,GWL_STYLE）;
UINTbtn_type=get_button_type（style）;
LONGstate;
HANDLEoldHbitmap;
pt.x=LOWORD（lParam）;
pt.y=HIWORD（lParam）;
switch（uMsg）
{
caseWM_GETDLGCODE:
switch（btn_type）
{
caseBS_USERBUTTON:
caseBS_PUSHBUTTON:
returnDLGC_BUTTON|DLGC_UNDEFPUSHBUTTON;
caseBS_DEFPUSHBUTTON:
returnDLGC_BUTTON|DLGC_DEFPUSHBUTTON;
caseBS_RADIOBUTTON:
caseBS_AUTORADIOBUTTON:
returnDLGC_BUTTON|DLGC_RADIOBUTTON;
caseBS_GROUPBOX:
returnDLGC_STATIC;
default:
returnDLGC_BUTTON;
}
caseWM_ENABLE:
paint_button（hWnd,btn_type,ODA_DRAWENTIRE）;
break;
caseWM_CREATE:
if（!
hbitmapCheckBoxes）
{
BITMAPbmp;
hbitmapCheckBoxes=LoadBitmapW（0,MAKEINTRESOURCEW（OBM_CHECKBOXES））;
GetObjectW（hbitmapCheckBoxes,sizeof（bmp）,&bmp）;
checkBoxWidth=bmp.bmWidth/4;
checkBoxHeight=bmp.bmHeight/3;
}
if（btn_type>=MAX_BTN_TYPE）
return-1;/*abort*/
set_button_state（hWnd,BUTTON_UNCHECKED）;
return0;
caseWM_ERASEBKGND:
if（btn_type==BS_OWNERDRAW）
{
HDChdc=（HDC）wParam;
RECTrc;
HBRUSHhBrush;
HWNDparent=GetParent（hWnd）;
if（!
parent）parent=hWnd;
hBrush=（HBRUSH）SendMessageW（parent,WM_CTLCOLORBTN,（WPARAM）hdc,（LPARAM）hWnd）;
if（!
hBrush）/*didtheappforgettocalldefwindowproc?
*/
hBrush=（HBRUSH）DefWindowProcW（parent,WM_CTLCOLORBTN,
（WPARAM）hdc,（LPARAM）hWnd）;
GetClientRect（hWnd,&rc）;
FillRect（hdc,&rc,hBrush）;
}
return1;
caseWM_PRINTCLIENT:
caseWM_PAINT:
if（btnPaintFunc[btn_type]）
{
PAINTSTRUCTps;
HDChdc=wParam?
（HDC）wParam:
BeginPaint（hWnd,&ps）;
intnOldMode=SetBkMode（hdc,OPAQUE）;
（btnPaintFunc[btn_type]）（hWnd,hdc,ODA_DRAWENTIRE）;
SetBkMode（hdc,nOldMode）;/*resetpaintingmode*/
if（!
wParam）EndPaint（hWnd,&ps）;
}
break;
caseWM_KEYDOWN:
if（wParam==VK_SPACE）
{
SendMessageW（hWnd,BM_SETSTATE,TRUE,0）;
set_button_state（hWnd,get_button_state（hWnd）|BUTTON_BTNPRESSED）;
}
break;
caseWM_LBUTTONDBLCLK:
if（style&BS_NOTIFY||
btn_type==BS_RADIOBUTTON||
btn_type==BS_USERBUTTON||
btn_type==BS_OWNERDRAW）
{
BUTTON_NOTIFY_PARENT（hWnd,BN_DOUBLECLICKED）;
break;
}
/*fallthrough*/
caseWM_LBUTTONDOWN:
SetCapture（hWnd）;
SetFocus（hWnd）;
set_button_state（hWnd,get_button_state（hWnd）|BUTTON_BTNPRESSED）;
SendMessageW（hWnd,BM_SETSTATE,TRUE,0）;
break;
caseWM_KEYUP:
if（wParam!
=VK_SPACE）
break;
/*fallthrough*/
caseWM_LBUTTONUP:
state=get_button_state（hWnd）;
if（!
（state&BUTTON_BTNPRESSED））break;
state&=BUTTON_NSTATES;
set_button_state（hWnd,state）;
if（!
（state&BUTTON_HIGHLIGHTED））
{
ReleaseCapture（）;
break;
}
SendMessageW（hWnd,BM_SETSTATE,FALSE,0）;
ReleaseCapture（）;
GetClientRect（hWnd,&rect）;
if（uMsg==WM_KEYUP||PtInRect（&rect,pt））
{
state=get_button_state（hWnd）;
switch（btn_type）
{
caseBS_AUTOCHECKBOX:
SendMessageW（hWnd,BM_SETCHECK,!
（state&BUTTON_CHECKED）,0）;
break;
caseBS_AUTORADIOBUTTON:
SendMessageW（hWnd,BM_SETCHECK,TRUE,0）;
break;
caseBS_AUTO3STATE:
SendMessageW（hWnd,BM_SETCHECK,
（state&BUTTON_3STATE）?
0:
（（state&3）+1）,0）;
break;
}
BUTTON_NOTIFY_PARENT（hWnd,BN_CLICKED）;
}
break;
caseWM_CAPTURECHANGED:
state=get_button_state（hWnd）;
if（state&BUTTON_BTNPRESSED）
{
state&=BUTTON_NSTATES;
set_button_state（hWnd,state）;
if（state&BUTTON_HIGHLIGHTED）SendMessageW（hWnd,BM_SETSTATE,FALSE,0）;
}
break;
caseWM_MOUSEMOVE:
if（（wParam&MK_LBUTTON）&&GetCapture（）==hWnd）
{
GetClientRect（hWnd,&rect）;
SendMessageW（hWnd,BM_SETSTATE,PtInRect（&rect,pt）,0）;
}
break;
caseWM_SETTEXT:
{
/*ClearanoldtexthereasWindowsdoes*/
HDChdc=GetDC（hWnd）;
HBRUSHhbrush;
RECTclient,rc;
HWNDparent=GetParent（hWnd）;
if（!
parent）parent=hWnd;
hbrush=（HBRUSH）SendMessageW（parent,WM_CTLCOLORSTATIC,
（WPARAM）hdc,（LPARAM）hWnd）;
if（!
hbrush）/*didtheappforgettocallDefWindowProc?
*/
hbrush=（HBRUSH）DefWindowProcW（parent,WM_CTLCOLORSTATIC,
（WPARAM）hdc,（LPARAM）hWnd）;
GetClientRect（hWnd,&client）;
rc=client;
BUTTON_CalcLabelRect（hWnd,hdc,&rc）;
/*Clipbyclientrectbounds*/
if（rc.right
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