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Unit1.cpp
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Unit1.cpp：Code Content
  1. //---------------------------------------------------------------------------
  2. #include <vcl.h>
  3. #include <math.h>
  4. #include <stdlib.h>
  5. #include <printers.hpp>
  6. #pragma hdrstop
  8. #include "Unit1.h"
  9. //---------------------------------------------------------------------------
  10. #pragma package(smart_init)
  11. #pragma resource "*.dfm"
  12. TForm1 *Form1;
  13. //---------------------------------------------------------------------------
  14. __fastcall TForm1::TForm1(TComponent* Owner)
  15.         : TForm(Owner)
  16. {
  17. }
  18. //---------------------------------------------------------------------------
  20. void __fastcall TForm1::Button1Click(TObject *Sender)
  21. {
  22.   int offx,offy,dpix,dpiy;
  23.   double left,top,right,bottom,aa;
  24.   int xx1,xx2,yy1,yy2;
  25.   dpix=GetDeviceCaps(Printer()->Handle,LOGPIXELSX);
  26.   dpiy=GetDeviceCaps(Printer()->Handle,LOGPIXELSY);
  28.   offx=GetDeviceCaps(Printer()->Handle,PHYSICALOFFSETX);
  29.   offy=GetDeviceCaps(Printer()->Handle,PHYSICALOFFSETY);
  31.   left=2.5;top=3.2;
  32.   right=15;bottom=8.7;
  34.   aa=left/2.54;
  35.   aa=aa*dpix;
  36.   xx1=floor(aa)-offx;
  38.   aa=right/2.54;
  39.   aa=aa*dpix;
  40.   xx2=floor(aa)-offx;
  42.   aa=top/2.54;
  43.   aa=aa*dpiy;
  44.   yy1=floor(aa)-offy;
  46.   aa=bottom/2.54;
  47.   aa=aa*dpiy;
  48.   yy2=floor(aa)-offy;
  50.   Printer()->BeginDoc();
  51.   Printer()->Canvas->Rectangle(xx1,yy1,xx2,yy2);
  52.   Printer()->EndDoc();
  53. }
  54. //---------------------------------------------------------------------------
  55. void __fastcall TForm1::Button2Click(TObject *Sender)
  56. {
  57.   int nn;
  58.   char dvc[255],drv[255],port[255];
  59.   THandle h;
  60.   TDeviceMode *DevMode;
  62.   Printer()->GetPrinter(dvc,drv,port,h);
  63.   if(h==0)return;
  64.   DevMode=(TDeviceMode *)GlobalLock((void*)h);
  66.   nn=atoi(Edit1->Text.c_str());
  67.   if(nn>100)nn=100;
  68.   if(nn<10)nn=10;
  69.   DevMode->dmFields=DevMode->dmFields|DM_SCALE;
  70.   DevMode->dmScale=(short)nn;
  71.   GlobalUnlock((void*)h);
  72. }
  73. //---------------------------------------------------------------------------
  74. void __fastcall TForm1::Button3Click(TObject *Sender)
  75. {
  76.   char dvc[255],drv[255],port[255];
  77.   THandle h;
  78.   TDeviceMode *DevMode;
  80.   Printer()->GetPrinter(dvc,drv,port,h);
  81.   if(h==0)return;
  82.   DevMode=(TDeviceMode *)GlobalLock((void*)h);
  84.   DevMode->dmFields=DevMode->dmFields|DM_COLOR;
  85.   DevMode->dmColor=DMCOLOR_MONOCHROME;
  86. //  DevMode->dmColor=DMCOLOR_COLOR;
  87.   GlobalUnlock((void*)h);
  88. }
  89. //---------------------------------------------------------------------------
  90. void __fastcall TForm1::Button4Click(TObject *Sender)
  91. {
  92.   char dvc[255],drv[255],port[255];
  93.   THandle h;
  94.   TDeviceMode *DevMode;
  96.   Printer()->GetPrinter(dvc,drv,port,h);
  97.   if(h==0)return;
  98.   DevMode=(TDeviceMode *)GlobalLock((void*)h);
  100.   DevMode->dmFields=DevMode->dmFields|DM_PRINTQUALITY;
  101.   DevMode->dmPrintQuality=DMRES_HIGH;
  102. //DMRES_HIGH
  103. //DMRES_MEDIUM
  104. //DMRES_LOW
  105. //DMRES_DRAFT
  106.   GlobalUnlock((void*)h);
  107. }
  108. //---------------------------------------------------------------------------