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{$include compilers.inc}
unit wrapper;
interface
uses windows;
function GetScreenRect():TRect;
procedure SnapToScreen(var rc:TRect;dx:integer=0;dy:integer=0{;
minw:integer=240;minh:integer=100});
function LV_GetLParam (list:HWND;item:integer=-1):integer;
function LV_SetLParam (list:HWND;lParam:dword;item:integer=-1):integer;
function LV_ItemAtPos(wnd:HWND;Pt:TPOINT;var SubItem:dword):Integer; overload;
function LV_ItemAtPos(wnd:HWND;x,y:integer;var SubItem:dword):Integer; overload;
procedure LV_SetItem (handle:hwnd;str:PAnsiChar;item:integer;subitem:integer=0);
procedure LV_SetItemW(handle:hwnd;str:PWideChar;item:integer;subitem:integer=0);
function LV_MoveItem(list:hwnd;direction:integer;item:integer=-1):integer;
function LV_GetColumnCount(list:HWND):integer;
function LV_CheckDirection(list:HWND):integer; // bit 0 - can move up, bit 1 - down
function GetDlgText(Dialog:HWND;idc:integer;getAnsi:boolean=false):pointer; overload;
function GetDlgText(wnd:HWND;getAnsi:boolean=false):pointer; overload;
function ShowDlg (dst:PAnsiChar;fname:PAnsiChar=nil;Filter:PAnsiChar=nil;open:boolean=true):boolean;
function ShowDlgW(dst:PWideChar;fname:PWideChar=nil;Filter:PWideChar=nil;open:boolean=true):boolean;
function SelectDirectory(Caption:PAnsiChar;var Directory:PAnsiChar;
Parent:HWND=0;newstyle:bool=false):Boolean; overload;
function SelectDirectory(Caption:PWideChar;var Directory:PWideChar;
Parent:HWND=0;newstyle:bool=false):Boolean; overload;
function CB_SelectData(cb:HWND;data:dword):integer; overload;
function CB_SelectData(Dialog:HWND;id:cardinal;data:dword):integer; overload;
function CB_GetData (cb:HWND;idx:integer=-1):dword;
function CB_AddStrData (cb:HWND;astr:pAnsiChar;data:integer=0;idx:integer=-1):HWND;
function CB_AddStrDataW(cb:HWND;astr:pWideChar;data:integer=0;idx:integer=-1):HWND;
implementation
uses messages,common,shlobj,activex,commctrl,commdlg;
{.$IFNDEF DELPHI10_UP}
const
LVM_SORTITEMSEX = LVM_FIRST + 81;
{.$ENDIF}
{$IFNDEF DELPHI7_UP}
const
BIF_NEWDIALOGSTYLE = $0040;
const
SM_XVIRTUALSCREEN = 76;
SM_YVIRTUALSCREEN = 77;
SM_CXVIRTUALSCREEN = 78;
SM_CYVIRTUALSCREEN = 79;
{$ENDIF}
function GetScreenRect():TRect;
begin
result.left := GetSystemMetrics( SM_XVIRTUALSCREEN );
result.top := GetSystemMetrics( SM_YVIRTUALSCREEN );
result.right := GetSystemMetrics( SM_CXVIRTUALSCREEN ) + result.left;
result.bottom:= GetSystemMetrics( SM_CYVIRTUALSCREEN ) + result.top;
end;
procedure SnapToScreen(var rc:TRect;dx:integer=0;dy:integer=0{;
minw:integer=240;minh:integer=100});
var
rect:TRect;
begin
rect:=GetScreenRect;
if rc.right >rect.right then rc.right :=rect.right -dx;
if rc.bottom>rect.bottom then rc.bottom:=rect.bottom-dy;
if rc.left <rect.left then rc.left :=rect.left;
if rc.top <rect.top then rc.top :=rect.top;
end;
function GetDlgText(wnd:HWND;getAnsi:boolean=false):pointer;
var
a:cardinal;
begin
result:=nil;
if getAnsi then
begin
a:=SendMessageA(wnd,WM_GETTEXTLENGTH,0,0)+1;
if a>1 then
begin
mGetMem(PAnsiChar(result),a);
SendMessageA(wnd,WM_GETTEXT,a,longint(result));
end;
end
else
begin
a:=SendMessageW(wnd,WM_GETTEXTLENGTH,0,0)+1;
if a>1 then
begin
mGetMem(pWideChar(result),a*SizeOf(WideChar));
SendMessageW(wnd,WM_GETTEXT,a,longint(result));
end;
end;
end;
function GetDlgText(Dialog:HWND;idc:integer;getAnsi:boolean=false):pointer;
begin
result:=GetDlgText(GetDlgItem(Dialog,idc),getAnsi);
end;
function ShowDlg(dst:PAnsiChar;fname:PAnsiChar=nil;Filter:PAnsiChar=nil;open:boolean=true):boolean;
var
NameRec:OpenFileNameA;
begin
FillChar(NameRec,SizeOf(NameRec),0);
with NameRec do
begin
LStructSize:=SizeOf(NameRec);
if fname=nil then
dst[0]:=#0
else if fname<>dst then
StrCopy(dst,fname);
// lpstrInitialDir:=dst;
lpStrFile :=dst;
lpStrFilter:=Filter;
if Filter<>nil then
begin
lpstrDefExt:=StrEnd(Filter)+1;
inc(lpstrDefExt,2); // skip "*."
end;
NMaxFile :=511;
Flags :=OFN_EXPLORER or OFN_OVERWRITEPROMPT;// or OFN_HIDEREADONLY;
end;
if open then
result:=GetOpenFileNameA(NameRec)
else
result:=GetSaveFileNameA(NameRec);
end;
function ShowDlgW(dst:PWideChar;fname:PWideChar=nil;Filter:PWideChar=nil;open:boolean=true):boolean;
var
NameRec:OpenFileNameW;
begin
FillChar(NameRec,SizeOf(NameRec),0);
with NameRec do
begin
LStructSize:=SizeOf(NameRec);
if fname=nil then
dst[0]:=#0
else if fname<>dst then
StrCopyW(dst,fname);
// lpstrInitialDir:=dst;
lpStrFile :=dst;
lpStrFilter:=Filter;
if Filter<>nil then
begin
lpstrDefExt:=StrEndW(Filter)+1;
inc(lpstrDefExt,2); // skip "*."
end;
NMaxFile :=511;
Flags :=OFN_EXPLORER or OFN_OVERWRITEPROMPT;// or OFN_HIDEREADONLY;
end;
if open then
result:=GetOpenFileNameW(NameRec)
else
result:=GetSaveFileNameW(NameRec)
end;
procedure LV_SetItem(handle:hwnd;str:PAnsiChar;item:integer;subitem:integer=0);
var
li:LV_ITEMA;
begin
// zeromemory(@li,sizeof(li));
li.mask :=LVIF_TEXT;
li.pszText :=str;
li.iItem :=item;
li.iSubItem:=subitem;
SendMessageA(handle,LVM_SETITEMA,0,integer(@li));
end;
procedure LV_SetItemW(handle:hwnd;str:PWideChar;item:integer;subitem:integer=0);
var
li:LV_ITEMW;
begin
// zeromemory(@li,sizeof(li));
li.mask :=LVIF_TEXT;
li.pszText :=str;
li.iItem :=item;
li.iSubItem:=subitem;
SendMessageW(handle,LVM_SETITEMW,0,integer(@li));
end;
function SelectDirectory(Caption:PAnsiChar;var Directory:PAnsiChar;
Parent:HWND=0;newstyle:bool=false):Boolean;
var
BrowseInfo:TBrowseInfoA;
Buffer:array [0..MAX_PATH-1] of AnsiChar;
ItemIDList:PItemIDList;
ShellMalloc:IMalloc;
begin
Result:=False;
FillChar(BrowseInfo,SizeOf(BrowseInfo),0);
if (ShGetMalloc(ShellMalloc)=S_OK) and (ShellMalloc<>nil) then
begin
with BrowseInfo do
begin
hwndOwner :=Parent;
pszDisplayName:=Buffer;
lpszTitle :=Caption;
ulFlags :=BIF_RETURNONLYFSDIRS;
end;
if newstyle then
if CoInitializeEx(nil,COINIT_APARTMENTTHREADED)<>RPC_E_CHANGED_MODE then
BrowseInfo.ulFlags:=BrowseInfo.ulFlags or BIF_NEWDIALOGSTYLE;
try
ItemIDList:=ShBrowseForFolderA(BrowseInfo);
Result:=ItemIDList<>nil;
if Result then
begin
ShGetPathFromIDListA(ItemIDList,Buffer);
StrDup(Directory,Buffer);
ShellMalloc.Free(ItemIDList);
end;
finally
if newstyle then CoUninitialize;
end;
end;
end;
function SelectDirectory(Caption:PWideChar;var Directory:PWideChar;
Parent:HWND=0;newstyle:bool=false):Boolean;
var
BrowseInfo:TBrowseInfoW;
Buffer:array [0..MAX_PATH-1] of WideChar;
ItemIDList:PItemIDList;
ShellMalloc:IMalloc;
begin
Result:=False;
FillChar(BrowseInfo,SizeOf(BrowseInfo),0);
if (ShGetMalloc(ShellMalloc)=S_OK) and (ShellMalloc<>nil) then
begin
with BrowseInfo do
begin
hwndOwner :=Parent;
pszDisplayName:=Buffer;
lpszTitle :=Caption;
ulFlags :=BIF_RETURNONLYFSDIRS;
end;
if newstyle then
if CoInitializeEx(nil,COINIT_APARTMENTTHREADED)<>RPC_E_CHANGED_MODE then
BrowseInfo.ulFlags:=BrowseInfo.ulFlags or BIF_NEWDIALOGSTYLE;
try
ItemIDList:=ShBrowseForFolderW(BrowseInfo);
Result:=ItemIDList<>nil;
if Result then
begin
ShGetPathFromIDListW(ItemIDList,Buffer);
StrDupW(Directory,Buffer);
ShellMalloc.Free(ItemIDList);
end;
finally
if newstyle then CoUninitialize;
end;
end;
end;
//----- ListView functions -----
function LV_GetLParam(list:HWND;item:integer=-1):integer;
var
li:LV_ITEMW;
begin
if item<0 then
begin
item:=SendMessage(list,LVM_GETNEXTITEM,-1,LVNI_FOCUSED);
if item<0 then
begin
result:=-1;
exit;
end;
end;
li.iItem :=item;
li.mask :=LVIF_PARAM;
li.iSubItem:=0;
SendMessageW(list,LVM_GETITEMW,0,dword(@li));
result:=li.lParam;
end;
function LV_SetLParam(list:HWND;lParam:dword;item:integer=-1):integer;
var
li:LV_ITEMW;
begin
if item<0 then
begin
item:=SendMessage(list,LVM_GETNEXTITEM,-1,LVNI_FOCUSED);
if item<0 then
begin
result:=-1;
exit;
end;
end;
li.iItem :=item;
li.mask :=LVIF_PARAM;
li.lParam :=lParam;
li.iSubItem:=0;
SendMessageW(list,LVM_SETITEMW,0,dword(@li));
result:=lParam;
end;
function LV_ItemAtPos(wnd:HWND;Pt:TPOINT;var SubItem:dword):Integer;
var
HTI:LV_HITTESTINFO;
begin
HTI.pt.x := Pt.X;
HTI.pt.y := Pt.Y;
SendMessage(wnd,LVM_SUBITEMHITTEST,0,Integer(@HTI));
Result :=HTI.iItem;
if @SubItem<>nil then
SubItem:=HTI.iSubItem;
end;
function LV_ItemAtPos(wnd:HWND;x,y:integer;var SubItem:dword):Integer; overload;
var
HTI:LV_HITTESTINFO;
begin
HTI.pt.x := x;
HTI.pt.y := y;
SendMessage(wnd,LVM_SUBITEMHITTEST,0,Integer(@HTI));
Result :=HTI.iItem;
if @SubItem<>nil then
SubItem:=HTI.iSubItem;
end;
function LV_Compare(lParam1,lParam2,param:LPARAM):integer; stdcall;
var
olditem,neibor:integer;
begin
result:=lParam1-lParam2;
neibor :=hiword(param);
olditem:=loword(param);
if neibor>olditem then
begin
if (lParam1=olditem) and (lParam2<=neibor) then
result:=1;
end
else
begin
if (lParam2=olditem) and (lParam1>=neibor) then
result:=1;
end;
end;
function LV_MoveItem(list:hwnd;direction:integer;item:integer=-1):integer;
begin
if ((direction>0) and (item=(SendMessage(list,LVM_GETITEMCOUNT,0,0)-1))) or
((direction<0) and (item=0)) then
begin
result:=item;
exit;
end;
if item<0 then
item:=SendMessage(list,LVM_GETNEXTITEM,-1,LVNI_FOCUSED);
SendMessageW(list,LVM_SORTITEMSEX,dword(item)+(dword(item+direction) shl 16),dword(@LV_Compare));
result:=item+direction;
end;
function LV_GetColumnCount(list:HWND):integer;
begin
result:=SendMessage(SendMessage(list,LVM_GETHEADER,0,0),HDM_GETITEMCOUNT,0,0);
end;
function LV_CheckDirection(list:HWND):integer;
var
i,cnt{,selcnt}:integer;
stat,first,last,focus: integer;
begin
first :=-1;
last :=-1;
focus :=-1;
cnt :=SendMessage(list,LVM_GETITEMCOUNT,0,0)-1;
// selcnt:=SendMessage(list,LVM_GETSELECTEDCOUNT,0,0);
for i:=0 to cnt do
begin
stat:=SendMessage(list,LVM_GETITEMSTATE,i,LVIS_SELECTED or LVIS_FOCUSED);
if (stat and LVIS_SELECTED)<>0 then
begin
if (stat and LVIS_FOCUSED)<>0 then
focus:=i;
if first<0 then first:=i;
last:=i;
end;
end;
result:=0;
if focus<0 then
focus:=first;
if focus>=0 then
result:=result or ((focus+1) shl 16);
if first>0 then // at least one selected and not first
begin
result:=(result or 1){ or (first+1) shl 16};
end;
if (last>=0) and (last<cnt) then
result:=result or 2;
end;
//----- Combobox functions -----
function CB_SelectData(cb:HWND;data:dword):integer; overload;
var
i:integer;
begin
result:=0;
for i:=0 to SendMessage(cb,CB_GETCOUNT,0,0)-1 do
begin
if data=dword(SendMessage(cb,CB_GETITEMDATA,i,0)) then
begin
result:=i;
break;
end;
end;
result:=SendMessage(cb,CB_SETCURSEL,result,0);
end;
function CB_SelectData(Dialog:HWND;id:cardinal;data:dword):integer; overload;
begin
result:=CB_SelectData(GetDlgItem(Dialog,id),data);
end;
function CB_GetData(cb:HWND;idx:integer=-1):dword;
begin
if idx<0 then
idx:=SendMessage(cb,CB_GETCURSEL,0,0);
result:=SendMessage(cb,CB_GETITEMDATA,idx,0);
end;
function CB_AddStrData(cb:HWND;astr:pAnsiChar;data:integer=0;idx:integer=-1):HWND;
begin
result:=cb;
if idx<0 then
idx:=SendMessage(cb,CB_ADDSTRING,0,dword(astr))
else
idx:=SendMessage(cb,CB_INSERTSTRING,idx,dword(astr));
SendMessage(cb,CB_SETITEMDATA,idx,data);
end;
function CB_AddStrDataW(cb:HWND;astr:pWideChar;data:integer=0;idx:integer=-1):HWND;
begin
result:=cb;
if idx<0 then
idx:=SendMessageW(cb,CB_ADDSTRING,0,dword(astr))
else
idx:=SendMessageW(cb,CB_INSERTSTRING,idx,dword(astr));
SendMessage(cb,CB_SETITEMDATA,idx,data);
end;
end.
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