Mega Code Archive
How to get a list of a printers capabilities
<![CDATA[
Title: How to get a list of a printers capabilities
uses
Printers;
//------------------------------------------------------------------------------
// Printer Device Debugging Code to TMemo Componenet
// (c) - 1999 / by A. Weidauer
// alex.weiauer@huckfinn.de
//------------------------------------------------------------------------------
procedure GetDeviceSettings(DevCtrl: TMemo);
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(Memo1);
end;
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