我需要获得可用的RAM来确定我的软件的某些特性。
我有以下代码来显示我的 PC 的 RAM:
type
DWORDLONG = Int64;
TMemoryStatusEx = record
dwLength: DWORD;
dwMemoryLoad: DWORD;
ullTotalPhys: DWORDLONG;
ullAvailPhys: DWORDLONG;
ullTotalPageFile: DWORDLONG;
ullAvailPageFile: DWORDLONG;
ullTotalVirtual: DWORDLONG;
ullAvailVirtual: DWORDLONG;
ullAvailExtendedVirtual: DWORDLONG;
end;
function GlobalMemoryStatusEx(var lpBuffer: TMemoryStatusEx): BOOL;
external 'GlobalMemoryStatusEx@kernel32.dll stdcall';
function InitializeSetup: Boolean;
var
MemoryStatus: TMemoryStatusEx;
RAM: String;
begin
Result := True;
MemoryStatus.dwLength := SizeOf(MemoryStatus);
if GlobalMemoryStatusEx(MemoryStatus) then
begin
RAM := Int64ToStr(MemoryStatus.ullTotalPhys/1000000000);
MsgBox('This PC has '+RAM+' GB of RAM', mbInformation, MB_OK);
end;
end;
基于 Inno 设置 - 如何在安装前/安装期间检查系统规格?
如果您已经拥有Inno Setup的GlobalMemoryStatusEx
代码 - 如何在安装之前/期间检查系统规格?,只需使用ullAvailPhys
字段。
另一种可能性是使用 WMI 查询:
var
Query: string;
WbemLocator, WbemServices, WbemObjectSet: Variant;
OperatingSystem: Variant;
begin
WbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
WbemServices := WbemLocator.ConnectServer('.', 'rootCIMV2');
Query := 'SELECT FreePhysicalMemory FROM Win32_OperatingSystem';
WbemObjectSet := WbemServices.ExecQuery(Query);
if not VarIsNull(WbemObjectSet) and (WbemObjectSet.Count > 0) then
begin
OperatingSystem := WbemObjectSet.ItemIndex(0);
Log(Format('Free physical memory = %d GB', [
Integer(OperatingSystem.FreePhysicalMemory div (1024*1024))]));
end;
end;
另请参阅是否有办法在 Inno 安装程序中读取系统信息(除其他外,显示如何使用 WMI 查询检索总物理内存(。
读取ullAvailPhys
字段:
type
DWORDLONG = Int64;
TMemoryStatusEx = record
dwLength: DWORD;
dwMemoryLoad: DWORD;
ullTotalPhys: DWORDLONG;
ullAvailPhys: DWORDLONG;
ullTotalPageFile: DWORDLONG;
ullAvailPageFile: DWORDLONG;
ullTotalVirtual: DWORDLONG;
ullAvailVirtual: DWORDLONG;
ullAvailExtendedVirtual: DWORDLONG;
end;
function GlobalMemoryStatusEx(var lpBuffer: TMemoryStatusEx): BOOL;
external 'GlobalMemoryStatusEx@kernel32.dll stdcall';
function InitializeSetup: Boolean;
var
MemoryStatus: TMemoryStatusEx;
RAM, Available: String;
begin
Result := True;
MemoryStatus.dwLength := SizeOf(MemoryStatus);
{ if the GlobalMemoryStatusEx function call succeed, then... }
if GlobalMemoryStatusEx(MemoryStatus) then
begin
RAM := Int64ToStr(MemoryStatus.ullTotalPhys/1000000000);
Available := Int64ToStr(MemoryStatus.ullAvailPhys/1000000000)
MsgBox('This PC has '+RAM+' GB of RAM, Available ' + Available, mbInformation, MB_OK);
end;
end;