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Report From: Delphi-BCB/RTL/Delphi/WinAPI [ Add a report in this area ]

Report #: 48771

Status: Closed

GetWindowLongPtr, SetWindowLongPtr, GWLP_* missing

Project: Delphi

Build #: 11.0.2709.7128

Version: 11.0

Submitted By: Jordan Russell

Report Type: Minor failure / Design problem

Date Reported: 7/9/2007 11:15:12 AM

Severity: Commonly encountered problem

Last Updated: 3/20/2012 2:24:39 AM

Platform: All versions

Internal Tracking #: 252143

Resolution: Fixed (Resolution Comments)

Resolved in Build: : 12.0.2872.27234

Duplicate of: None

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Overall Rating: (1 Total Rating)

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Total Votes: 10

Description

GetWindowLongPtr, SetWindowLongPtr, and GWLP_* are missing from Windows.pas.
These functions/constants are needed in order to write code today that will compile cleanly on a future 64-bit version of Delphi.

Here's what must be added:

interface

const
  GWLP_WNDPROC = -4;
  GWLP_HINSTANCE = -6;
  GWLP_HWNDPARENT = -8;
  GWLP_USERDATA = -21;
  GWLP_ID = -12;

function GetWindowLongPtr(hWnd: HWND; nIndex: Integer): LONG_PTR; stdcall;
function GetWindowLongPtrA(hWnd: HWND; nIndex: Integer): LONG_PTR; stdcall;
function GetWindowLongPtrW(hWnd: HWND; nIndex: Integer): LONG_PTR; stdcall;
function SetWindowLongPtr(hWnd: HWND; nIndex: Integer; dwNewLong: LONG_PTR): LONG_PTR; stdcall;
function SetWindowLongPtrA(hWnd: HWND; nIndex: Integer; dwNewLong: LONG_PTR): LONG_PTR; stdcall;
function SetWindowLongPtrW(hWnd: HWND; nIndex: Integer; dwNewLong: LONG_PTR): LONG_PTR; stdcall;

implementation

{$IFNDEF _WIN64}
// In a 32-bit build, these are simply aliases for the non-Ptr versions.
// (WinUser.h uses macros, e.g.: #define GetWindowLongPtrA GetWindowLongA)
function GetWindowLongPtr; external user32 name 'GetWindowLongA';
function GetWindowLongPtrA; external user32 name 'GetWindowLongA';
function GetWindowLongPtrW; external user32 name 'GetWindowLongW';
function SetWindowLongPtr; external user32 name 'SetWindowLongA';
function SetWindowLongPtrA; external user32 name 'SetWindowLongA';
function SetWindowLongPtrW; external user32 name 'SetWindowLongW';
{$ELSE}
// In a 64-bit build, use the real Ptr functions.
function GetWindowLongPtr; external user32 name 'GetWindowLongPtrA';
function GetWindowLongPtrA; external user32 name 'GetWindowLongPtrA';
function GetWindowLongPtrW; external user32 name 'GetWindowLongPtrW';
function SetWindowLongPtr; external user32 name 'SetWindowLongPtrA';
function SetWindowLongPtrA; external user32 name 'SetWindowLongPtrA';
function SetWindowLongPtrW; external user32 name 'SetWindowLongPtrW';
{$ENDIF}

Steps to Reproduce:

N/A

Workarounds

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Attachment

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