Dicas - Informações da impressora

Informações da impressora

Uma dica bem interessante que mostra como mostrar informações de uma impressora, confira as linhas do código abaixo.

uses Printers;

procedure GetDeviceSettings(DevCtrl: TRichEdit);

var

Sep: string;

//-----------------------------------------------

procedure MakeInt(S: string; key: Integer);

begin

S := UpperCase(S);

DevCtrl.Lines.Add(UpperCase(Format(' %36S = %d ',

[s, GetDeviceCaps(Printer.Handle, Key)])));

end;

//-----------------------------------------------

function StringToBits(S: string): string;

var

H: string;

i: Integer;

//-----------------------------------------------

function SubStr(C: Char): string;

begin

if c = '0' then SubStr := '0000';

if c = '1' then SubStr := '0001';

if c = '2' then SubStr := '0010';

if c = '3' then SubStr := '0011';

if c = '4' then SubStr := '0100';

if c = '5' then SubStr := '0101';

if c = '6' then SubStr := '0110';

if c = '7' then SubStr := '0111';

if c = '8' then SubStr := '1000';

if c = '9' then SubStr := '1001';

if c = 'A' then SubStr := '1010';

if c = 'B' then SubStr := '1011';

if c = 'C' then SubStr := '1100';

if c = 'D' then SubStr := '1101';

if c = 'E' then SubStr := '1110';

if c = 'F' then SubStr := '1111';

end;

//-----------------------------------------------

begin

StringToBits := '';

S := UpperCase(s);

H := '';

if Length(S) = 0 then Exit;

if Length(S) = 1 then S := '0000' + S;

if Length(S) = 2 then S := '000' + S;

if Length(S) = 3 then S := '00' + S;

if Length(S) = 4 then S := '0' + S;

for i := 1 to Length(s) do

H := H + ' ' + SubStr(S[i]);

StringToBits := H;

end;

//-----------------------------------------------

procedure MakeHex(S: string; key: Cardinal);

var

h: string;

begin

S := UpperCase(S);

h := Format('%X', [GetDeviceCaps(Printer.Handle, Key)]);

if Length(H) = 0 then Exit;

if Length(H) = 1 then H := '0000' + H;

if Length(H) = 2 then H := '000' + H;

if Length(H) = 3 then H := '00' + H;

if Length(H) = 4 then H := '0' + H;

DevCtrl.Lines.Add('');

DevCtrl.Lines.Add(SEP);

DevCtrl.Lines.Add('');

DevCtrl.Lines.Add(Format('%37S = Flags(%S) Key(%S)',

[s, h, StringToBits(H)]

));

// (( GetDeviceCaps(Printer.Handle,Key),

end;

//----------------------------------------------------

procedure MakeFlag(S: string; key, subKey: Cardinal);

var

i: Cardinal;

begin

S := UpperCase(S);

i := GetDeviceCaps(Printer.Handle, Key);

if i and SubKey <> 0 then

DevCtrl.Lines.Add(Format(' %34S = Flag(%4S) Key(%6D,%S)',

[s, 'ON ', SubKey, StringToBits(Format('%x', [SubKey]))]))

else

DevCtrl.Lines.Add(Format(' %34S = Flag(%4S) Key(%6D,%S)',

[s, 'OFF', SubKey, StringToBits(Format('%x', [SubKey]))]))

end;

//----------------------------------------------------

function TechnoToStr(i: Integer): string;

begin

TechnoToStr := '#ERROR# is Unknwon';

case i of

DT_PLOTTER: TechnoToStr := 'Vector Plotter';

DT_RASDISPLAY: TechnoToStr := 'Raster Display';

DT_RASPRINTER: TechnoToStr := 'Raster Printer';

DT_RASCAMERA: TechnoToStr := 'Raster Camera';

DT_CHARSTREAM: TechnoToStr := 'Character Stream';

DT_METAFILE: TechnoToStr := 'Metafile';

DT_DISPFILE: TechnoToStr := 'Display file';

end;

end;

//--Main Procedure

//----------------------------------------------------------

begin

DevCtrl.SetFocus;

DevCtrl.Visible := False;

if Printer.PrinterIndex < 0 then Exit;

// Device Organisation

try

if not (GetMapMode(Printer.Handle) = MM_TEXT) then

SetMapMode(Printer.Handle, MM_Text);

DevCtrl.Clear;

Sep := '______________________________________________________________________________________________';

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

DevCtrl.Lines.Add(' PRINTER : ' + Printer.Printers[Printer.PrinterIndex]);

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

DevCtrl.Lines.Add(Format('%36S = %D', ['NUMBER Of COPIES', Printer.Copies]));

if Printer.Orientation = poLandscape then

DevCtrl.Lines.Add(Format('%36S = LANDSCAPE', ['ORIENTATION']));

if Printer.Orientation = poPortrait then

DevCtrl.Lines.Add(Format('%36S = PORTRAIT', ['ORIENTATION']));

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

MakeInt('DRIVERVERSION', DRIVERVERSION);

DevCtrl.Lines.Add(Format(' %36S = %S', ['TECHNOLOGY',

UpperCase(TechnoToStr(GetDeviceCaps(Printer.Handle, Technology)))]));

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

MakeInt('WIDTH [mm]', HORZSIZE);

MakeInt('HEIGHT [mm]', VERTSIZE);

MakeInt('WIDTH [pix]', HORZRES);

MakeInt('HEIGHT [pix]', VERTRES);

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

MakeInt('Physical Width [pix]', PHYSICALWIDTH);

MakeInt('Physical Height[pix]', PHYSICALHEIGHT);

MakeInt('Physical Offset X [pix]', PHYSICALOFFSETX);

MakeInt('Physical Offset Y [pix]', PHYSICALOFFSETY);

MakeInt('SCALING FACTOR X', SCALINGFACTORX);

MakeInt('SCALING FACTOR Y', SCALINGFACTORY);

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

MakeInt('horizontal [DPI]', LOGPIXELSX);

MakeInt('vertial [DPI]', LOGPIXELSY);

MakeInt('BITS PER PIXEL', BITSPIXEL);

MakeInt('COLOR PLANES', PLANES);

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

MakeInt('NUMBER OF BRUSHES', NUMBRUSHES);

MakeInt('NUMBER OF PENS', NUMPENS);

MakeInt('NUMBER OF FONTS', NUMFONTS);

MakeInt('NUMBER OF COLORS', NUMCOLORS);

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

MakeInt('ASPECT Ratio X [DPI]', ASPECTX);

MakeInt('ASPECT Ratio Y [DPI]', ASPECTY);

MakeInt('ASPECT Ratio XY [DPI]', ASPECTXY);

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

MakeInt('SIZE OF PALETTE', SIZEPALETTE);

MakeInt('RESERVED TO SYSTEM PALETTE **', NUMRESERVED);

MakeInt('ACTUAL RASTER RESOLUTION **', COLORRES);

DevCtrl.Lines.Add('');

DevCtrl.Lines.Add(' **...only true if KEY RASTERCAPS(RC_PALETTE)= ON');

MakeFlag('... KEY RASTERCAPS (RC_PALETTE)', RasterCaps, RC_PALETTE);

DevCtrl.Lines.Add('');

MakeHex('Clipping Capablities ', ClipCaps);

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

MakeFlag('No Support ', ClipCaps, CP_NONE);

MakeFlag('Support Rectangles', ClipCaps, CP_RECTANGLE);

MakeFlag('Support PolyRegion 32 Bit', ClipCaps, CP_REGION);

MakeHex('Raster Printing Flags ', RasterCaps);

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

MakeFlag('Support Bitmap Transfer', RasterCaps, RC_BITBLT);

MakeFlag('Support Banding', RasterCaps, RC_BANDING);

MakeFlag('Support Scaling', RasterCaps, RC_SCALING);

MakeFlag('Support Bitmaps > 64 kByte', RasterCaps, RC_BITMAP64);

MakeFlag('Support features of Win 2.0', RasterCaps, RC_GDI20_OUTPUT);

MakeFlag('Support Set~/GetDIBITS()', RasterCaps, RC_DI_BITMAP);

MakeFlag('Support Palette Devices', RasterCaps, RC_PALETTE);

MakeFlag('Support SetDIBitsToDevice()', RasterCaps, RC_DIBTODEV);

MakeFlag('Support Floodfill', RasterCaps, RC_FLOODFILL);

MakeFlag('Support StretchBlt()', RasterCaps, RC_STRETCHBLT);

MakeFlag('Support StretchBID()', RasterCaps, RC_STRETCHDIB);

MakeFlag('Support DIBS', RasterCaps, RC_DEVBITS);

MakeHex('Curve Printion Flages', CurveCaps);

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

MakeFlag('No Curve support', CurveCaps, CC_NONE);

MakeFlag('Support Circles', CurveCaps, CC_Circles);

MakeFlag('Support Pie', CurveCaps, CC_PIE);

MakeFlag('Support Arces', CurveCaps, CC_CHORD);

MakeFlag('Support Ellipses', CurveCaps, CC_ELLIPSEs);

MakeFlag('Support WIDE FRAMES', CurveCaps, CC_WIDE);

MakeFlag('Support STYLED FRAMES', CurveCaps, CC_STYLED);

MakeFlag('Support WIDE&STYLED FRAMES', CurveCaps, CC_WIDESTYLED);

MakeFlag('Support INTERIORS', CurveCaps, CC_INTERIORS);

MakeFlag('Support ROUNDRECT', CurveCaps, CC_ROUNDRECT);

MakeHex('Line & Polygon Printing Flags', LineCaps);

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

MakeFlag('No Line Support', LineCaps, LC_NONE);

MakeFlag('Support Polylines', LineCaps, LC_PolyLine);

MakeFlag('Support Marker', LineCaps, LC_Marker);

MakeFlag('Support PolyMarker', LineCaps, LC_PolyMarker);

MakeFlag('Support Wide Lines', LineCaps, LC_WIDE);

MakeFlag('Support STYLED Lines', LineCaps, LC_STYLED);

MakeFlag('Support WIDE&STYLED Lines', LineCaps, LC_WIDESTYLED);

MakeFlag('Support Lines Interiors', LineCaps, LC_INTERIORS);

MakeHex('Polygon (Areal) Printing Flags', POLYGONALCAPS);

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

MakeFlag('No Polygon Support', PolygonalCaps, PC_NONE);

MakeFlag('Filling Alternate Polygons', PolygonalCaps, PC_POLYGON);

MakeFlag('Drawing Rectangles', PolygonalCaps, PC_RECTANGLE);

MakeFlag('Filling Winding Polygons', PolygonalCaps, PC_WINDPOLYGON);

MakeFlag('Drawing Trapezoid (??Flag)', PolygonalCaps, PC_Trapezoid);

MakeFlag('Drawing a ScanLine', PolygonalCaps, PC_SCANLINE);

MakeFlag('Drawing Wide Border', PolygonalCaps, PC_WIDE);

MakeFlag('Drawing Styled Border', PolygonalCaps, PC_STYLED);

MakeFlag('Drawing WIDE&STYLED Border', PolygonalCaps, PC_WIDESTYLED);

MakeFlag('Drawing Interiors', PolygonalCaps, PC_INTERIORS);

MakeHex('Text Printing Flags', TEXTCAPS);

DevCtrl.Lines.Add(sep);

DevCtrl.Lines.Add('');

MakeFlag('Support Character Output Precision', TextCaps, TC_OP_CHARACTER);

MakeFlag('Support Stroke Output Precision', TextCaps, TC_OP_STROKE);

MakeFlag('Support Stroke Clip Precision', TextCaps, TC_CP_STROKE);

MakeFlag('Support 90° Character Rotation', TextCaps, TC_CR_90);

MakeFlag('Support any Character Rotaion', TextCaps, TC_CR_ANY);

MakeFlag('Support Character Scaling in X&Y', TextCaps, TC_SF_X_YINDEP);

MakeFlag('Support Character Scaling REAL', TextCaps, TC_SA_DOUBLE);

MakeFlag('Support Character Scaling RATIONAL', TextCaps, TC_SA_INTEGER);

MakeFlag('Support Character Scaling EXACT', TextCaps, TC_SA_CONTIN);

MakeFlag('Support Character Weight REAL', TextCaps, TC_EA_DOUBLE);

MakeFlag('Support Character Italic', TextCaps, TC_IA_ABLE);

MakeFlag('Support Character Underline', TextCaps, TC_UA_ABLE);

MakeFlag('Support Character Strikeout', TextCaps, TC_SO_ABLE);

MakeFlag('Support Character as RASTER FONT', TextCaps, TC_RA_ABLE);

MakeFlag('Support Character as VECTOR FONT', TextCaps, TC_VA_ABLE);

MakeFlag('Reserved Flag ???', TextCaps, TC_Reserved);

MakeFlag('DEVICE NOT USE a SCROLLBIT BLOCK ?', TextCaps, TC_SCROLLBLT);

DevCtrl.Lines.Insert(0, '..THE RESULTS ARE:');

except

// MessageDlg('The Current Printer is not valid ! ',

// mtError,[mbok],0);

Printer.PrinterIndex := -1;

DevCtrl.Lines.Add(' ! The Printer is not valid !');

end;

DevCtrl.Visible := True;

DevCtrl.SetFocus;

end;

procedure TForm1.Button1Click(Sender: TObject);

begin

  GetDeviceSettings(richedit1);

end;

Veja a foto de uma aplicação utilizando a função acima: