[Delphi] 그래픽카드의 이름을 반환하는 함수

현재 그래픽카드의 이름을 리턴하는 함수

 

function GetGraphicCard: String; 

var lpDisplayDevice: TDisplayDevice; 

begin 

lpDisplayDevice.sb:=SizeOf(lpDisplayDevice); 

lpDisplayDevice.StateFlags:=DISPLAY_DEVICE_ATTACHED_TO_DESKTOP; 

EnumDisplayDevices(nil, 0, lpDisplayDevice, 0); 

Result:=lpDisplayDevice.DeviceString; 

end; 

 

 

 

여기서도 중요한 건 TDisplayDevice 구조체임.

 

type
  PDisplayDeviceA = ^TDisplayDeviceA;
  PDisplayDeviceW = ^TDisplayDeviceW;
  PDisplayDevice = PDisplayDeviceA;
  {$EXTERNALSYM _DISPLAY_DEVICEA}
  _DISPLAY_DEVICEA = packed record
    cb: DWORD; 
    DeviceName: array[0..31] of AnsiChar; 
    DeviceString: array[0..127] of AnsiChar;
    StateFlags: DWORD;
  end;
  {$EXTERNALSYM _DISPLAY_DEVICEW}
  _DISPLAY_DEVICEW = packed record
    cb: DWORD;
    DeviceName: array[0..31] of WideChar;
    DeviceString: array[0..127] of WideChar;
    StateFlags: DWORD;
  end;
  {$EXTERNALSYM _DISPLAY_DEVICE}
  _DISPLAY_DEVICE = _DISPLAY_DEVICEA;
  TDisplayDeviceA = _DISPLAY_DEVICEA;
  TDisplayDeviceW = _DISPLAY_DEVICEW;
  TDisplayDevice = TDisplayDeviceA; 

 

 

간단한 멤버설명문 (볼랜드 헬프 페이지 - Windows GDI 에 있음)

 

cb

Size, in bytes, of the DISPLAY_DEVICE structure. This must be initialized prior to calling EnumDisplayDevices.

DeviceName

An array of characters identifying the device name. This is either the adapter device or the monitor device.

DeviceString

An array of characters containing the device context string. This is either a description of the display adapter or of the display monitor.

StateFlags

Device state flags. It can be any reasonable combination of the following.

Value	Meaning
DISPLAY_DEVICE_ATTACHED_TO_DESKTOP	The device is part of the desktop.
DISPLAY_DEVICE_MIRRORING_DRIVER	Represents a pseudo device used to mirror application drawing for remoting or other purposes. An invisible pseudo monitor is associated with this device. For example, NetMeeting uses it. Note that GetSystemMetrics(SM_MONITORS) only accounts for visible display monitors.
DISPLAY_DEVICE_MODESPRUNED	The device has more display modes than its output devices support.
DISPLAY_DEVICE_PRIMARY_DEVICE	The primary desktop is on the device. For a system with a single display card, this is always set. For a system with multiple display cards, only one device can have this set.
DISPLAY_DEVICE_REMOVABLE	The device is removable; it cannot be the primary display.
DISPLAY_DEVICE_VGA_COMPATIBLE	The device is VGA compatible.

 

원래 GDI 포맷에서는 아래의 멤버가 더 있음.

DeviceID

Windows 98/Me: A string that uniquely identifies the hardware adapter or the monitor. This is the Plug and Play identifier.

DeviceKey

Reserved.