Pure API Window

Pure API Window

 

代码
program APIWindow;

uses
SysUtils,
Windows,
Messages;

const
WinClassName
= 'MingClass';
StrOut
= 'Ming TextOut';

function MyWinProc(
hWindow: HWND;
aMessage: UINT;
WParam: WPARAM;
LParam: LPARAM): LRESULT;
stdcall; export;
var
dc: HDC;
ps: TPaintStruct;
rect: TRect;
begin
MyWinProc :
= 0;
case aMessage of
WM_PAINT:
begin
dc :
= BeginPaint(hWindow,ps);
GetClientRect(hWindow,rect);
DrawText(dc,StrOut,Length(StrOut),rect,DT_SINGLELINE
or DT_CENTER or DT_VCENTER);
//TextOut(dc,0,0,StrOut,Length(StrOut));
EndPaint(hWindow,ps);
end;
WM_LBUTTONDOWN:
begin
dc :
= GetDC(hWindow);//GetDC(0);
TextOut(dc,
0,0,'Left Button Down',Length('Left Button Down'));
ReleaseDC(hWindow,dc);
//ReleaseDC(0,dc);
end;
WM_CLOSE:
if ID_YES = MessageBox(0,'Are you sure exit ?','Propmt info',MB_YESNO) then
begin
DestroyWindow(hWindow);
end;
WM_DESTROY:
begin
PostQuitMessage(
0);
end;
else
Result :
= DefWindowProc(hWindow,aMessage,WParam,LParam);
end;
end;

function WinRegister: Boolean;
var
wndClass: TWndClass;
hInstance: Cardinal;
begin
hInstance :
= GetModuleHandle(0);
//
wndClass.style :
= CS_VREDRAW or CS_HREDRAW;
wndClass.lpfnWndProc :
= TFNWndProc(@MyWinProc); //Callback function
wndClass.cbClsExtra :
= 0;
wndClass.cbWndExtra :
= 0;
wndClass.hInstance :
= hInstance;//Same as System.MainInstance;
wndClass.hIcon :
= LoadIcon(0,IDI_INFORMATION);
wndClass.hCursor :
= LoadCursor(0,IDC_CROSS);
wndClass.hbrBackground :
= HBRUSH(GetStockObject(BLACK_BRUSH));
wndClass.lpszMenuName :
= nil;
wndClass.lpszClassName :
= WinClassName;
//
Result :
= Windows.RegisterClass(wndClass) <> 0;
end;

function WinCreate: HWND;
var
hWindow: HWND;
hInstance: Cardinal;
begin
hInstance :
= GetModuleHandle(0);
hWindow :
= CreateWindow(
WinClassName
,
'Pure Api Window'
,WS_OVERLAPPEDWINDOW
or WS_SIZEBOX or WS_MAXIMIZEBOX
,cw_UseDefault
,cw_UseDefault
,
600
,
400
,
0
,
0
,hInstance
//System.MainInstance
,
nil);
if hWindow <> 0 then
begin
ShowWindow(hWindow,SW_SHOWNORMAL);
UpdateWindow(hWindow);
end;
Result :
= hWindow;
end;

var
aMsg: TMsg;
hWindow: HWND;
begin
if not WinRegister then
begin
MessageBox(
0,'Register class failed',nil,0);
exit;
end;
//
hWindow :
= WinCreate;
if hWindow = 0 then
begin
MessageBox(
0,'Create window failed',nil,0);
exit;
end;
//
while(GetMessage(aMsg,0,0,0)) do
begin
TranslateMessage(aMsg);
DispatchMessage(aMsg);
end;
Halt(aMsg.wParam);
end.

A new one

代码
program aWindow;

uses
Windows,
Messages;

{$R *.RES}

var
wClass: TWndClass;
msg: TMsg;

function WindowProc(hWnd,msg,wParam,lParam:Integer):integer;stdcall;
begin
if msg = WM_DESTROY then PostQuitMessage(0);
Result :
= DefWindowProc(hWnd,msg,wParam,lParam);
end;

begin
wClass.lpszClassName :
= 'MingClass';
wClass.lpfnWndProc :
= @WindowProc;
wClass.hInstance :
= HInstance;
wClass.hbrBackground :
= 1;
RegisterClass(wClass);
CreateWindowEx(
0,wClass.lpszClassName,'Ming Caption',WS_OVERLAPPEDWINDOW or WS_VISIBLE,
100,100,340,220,0,0,HInstance,nil);
while GetMessage(msg,0,0,0) do
begin
TranslateMessage(msg);
DispatchMessage(msg);
end;
end.

 

 

posted @ 2010-12-27 16:23  Jekhn  阅读(239)  评论(0编辑  收藏  举报