有没有办法知道我们正在使用哪个版本的Windows?
我需要在Windows XP中将图像设置为TBitButton,而在Windows 7中不需要图像。应该自动完成。
检查 SysUtils.Win32MajorVersion
(在 Delphi 7 中,如果还没有添加 SysUtils
到你的 uses
子句中,你需要手动添加 - 更高版本会自动添加)。最简单的方法是像通常一样在IDE中分配 Glyph
,如果运行在 Vista 或更高版本上,则将其清除:
if SysUtils.Win32MajorVersion >= 6 then // Windows Vista or higher
BitBtn1.Glyph := nil;
有关检测特定 Windows 版本和版本的更多信息,请参见此帖子。它尚未更新到最新的 Windows 版本和版本,但可以让您入门。您还可以搜索 SO 中的[delphi] GetVersionEx
以查看其他示例。
unit JDOSInfo;
interface
uses
Classes, Windows, SysUtils, StrUtils, Forms, Registry;
type
TJDOSInfo = class(TComponent)
private
fReg: TRegistry;
fKey: String;
fMinor: Integer;
fMajor: Integer;
fBuild: Integer;
fPlatform: Integer;
fIsServer: Bool;
fIs64bit: Bool;
fProductName: String;
function GetProductName: String;
procedure SetProductName(Value: String);
procedure SetMajor(Value: Integer);
procedure SetMinor(Value: Integer);
procedure SetBuild(Value: Integer);
procedure SetPlatform(Value: Integer);
procedure SetIs64Bit(const Value: Bool);
procedure SetIsServer(const Value: Bool);
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
published
property Major: Integer read fMajor write SetMajor;
property Minor: Integer read fMinor write SetMinor;
property Build: Integer read fBuild write SetBuild;
property Platf: Integer read fPlatform write SetPlatform;
property ProductName: String read GetProductName write SetProductName;
property IsServer: Bool read fIsServer write SetIsServer;
property Is64Bit: Bool read fIs64bit write SetIs64Bit;
end;
function IsWOW64: Boolean;
function GetOSInfo: TOSVersionInfo;
procedure Register;
implementation
procedure Register;
begin
RegisterComponents('JD Custom', [TJDOSInfo]);
end;
function GetOSInfo: TOSVersionInfo;
begin
FillChar(Result, SizeOf(Result), 0);
Result.dwOSVersionInfoSize := SizeOf(Result);
if not GetVersionEx(Result) then
raise Exception.Create('Error calling GetVersionEx');
end;
function IsWOW64: Boolean;
type
TIsWow64Process = function( // Type of IsWow64Process API fn
Handle: THandle;
var Res: BOOL): BOOL; stdcall;
var
IsWow64Result: BOOL; // result from IsWow64Process
IsWow64Process: TIsWow64Process; // IsWow64Process fn reference
begin
// Try to load required function from kernel32
IsWow64Process:= GetProcAddress(GetModuleHandle('kernel32'),'IsWow64Process');
if Assigned(IsWow64Process) then
begin
// Function is implemented: call it
if not IsWow64Process(GetCurrentProcess, IsWow64Result) then
raise Exception.Create('Bad process handle');
// Return result of function
Result := IsWow64Result;
end else
// Function not implemented: can't be running on Wow64
Result:= False;
end;
constructor TJDOSInfo.Create(AOwner: TComponent);
var
Info: TOSVersionInfo;
Str: String;
begin
inherited Create(AOwner);
fReg:= TRegistry.Create(KEY_READ);
fReg.RootKey:= HKEY_LOCAL_MACHINE;
fKey:= 'Software\Microsoft\Windows NT\CurrentVersion';
fReg.OpenKey(fKey, False);
Info:= GetOSInfo;
fMajor:= Info.dwMajorVersion;
fMinor:= Info.dwMinorVersion;
fBuild:= Info.dwBuildNumber;
fIsServer:= False;
fIs64bit:= False;
fPlatform:= Info.dwPlatformId;
if fMajor >= 5 then begin
//After 2000
if fReg.ValueExists('ProductName') then
Str:= fReg.ReadString('ProductName')
else begin
Str:= 'Unknown OS: '+IntToStr(fMajor)+'.'+IntToStr(fMinor)+'.'+
IntToStr(fBuild)+'.'+IntToStr(fPlatform);
end;
if fReg.ValueExists('InstallationType') then begin
if UpperCase(fReg.ReadString('InstallationType')) = 'SERVER' then
fIsServer:= True;
end;
fIs64bit:= IsWOW64;
if fIs64bit then
Str:= Str + ' 64 Bit';
end else begin
//Before 2000
case fMajor of
4: begin
case fMinor of
0: Str:= 'Windows 95';
10: Str:= 'Windows 98';
90: Str:= 'Windows ME';
end;
end;
else begin
Str:= 'Older than 95';
end;
end;
end;
Self.fProductName:= Str;
end;
destructor TJDOSInfo.Destroy;
begin
if assigned(fReg) then begin
if fReg.Active then
fReg.CloseKey;
fReg.Free;
end;
inherited Destroy;
end;
function TJDOSInfo.GetProductName: String;
begin
Result:= Self.fProductName;
end;
procedure TJDOSInfo.SetProductName(Value: String);
begin
//Do Nothing Here!
end;
procedure TJDOSInfo.SetMinor(Value: Integer);
begin
//Do Nothing Here!
end;
procedure TJDOSInfo.SetMajor(Value: Integer);
begin
//Do Nothing Here!
end;
procedure TJDOSInfo.SetBuild(Value: Integer);
begin
//Do Nothing Here!
end;
procedure TJDOSInfo.SetPlatform(Value: Integer);
begin
//Do Nothing Here!
end;
procedure TJDOSInfo.SetIs64Bit(const Value: Bool);
begin
//Do Nothing Here!
end;
procedure TJDOSInfo.SetIsServer(const Value: Bool);
begin
//Do Nothing Here!
end;
end.
if Assigned(fReg)
检查,但仅调用Free
时则不需要,而且这样做是很糟糕的风格。 - David Heffernan
SysUtils
单元中设置了几个变量,您可以读取各个版本号的不同部分。只有当您想要查找更多详细信息,例如您正在使用哪个版本(专业版、家庭版、服务器版等)时,才需要使用GetVersionEx
。 - Ken White