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Unit1.cpp
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Unit1.cpp：Code Content
  1. //---------------------------------------------------------------------------
  2. #include <vcl.h>
  3. #pragma hdrstop
  5. #include "Unit1.h"
  6. //---------------------------------------------------------------------------
  7. #pragma package(smart_init)
  8. #pragma resource "*.dfm"
  9. TForm1 *Form1;
  10. //---------------------------------------------------------------------------
  11. __fastcall TForm1::TForm1(TComponent* Owner)
  12.         : TForm(Owner)
  13. {
  14.   Image4->Width=Image2->Width;
  15.   Image4->Height=Image2->Height;
  16.   Image4X=-1;
  17.   Image4Y=-1;
  18.   CurX=0;CurY=0;
  19. }
  20. //---------------------------------------------------------------------------
  21. void __fastcall TForm1::ImageBackup(int x,int y)
  22. {
  23.   int ww,hh;
  24.   TRect drc,src;
  25.   Image4X=x;
  26.   Image4Y=y;
  27.   ww=Image4->Width;
  28.   hh=Image4->Height;
  29.   drc=Rect(0,0,ww,hh);
  30.   src=Rect(Image4X,Image4Y,Image4X+ww,Image4Y+hh);
  31.   Image4->Canvas->CopyMode=cmSrcCopy;
  32.   Image4->Canvas->CopyRect(drc,Image1->Canvas,src);
  33. }
  34. //---------------------------------------------------------------------------
  35. void __fastcall TForm1::ImageRestore(void)
  36. {
  37.   int ww,hh;
  38.   TRect drc,src;
  39.   if((Image4X==-1)||(Image4Y==-1))return;
  40.   ww=Image4->Width;
  41.   hh=Image4->Height;
  42.   drc=Rect(Image4X,Image4Y,Image4X+ww,Image4Y+hh);
  43.   src=Rect(0,0,ww,hh);
  44.   Image1->Canvas->CopyMode=cmSrcCopy;
  45.   Image1->Canvas->CopyRect(drc,Image4->Canvas,src);
  46. }
  47. //---------------------------------------------------------------------------
  48. void __fastcall TForm1::SetMoveBmp(int x,int y)
  49. {
  50.   TRect drc,src;
  51.   int ww,hh;
  52.   ImageRestore();
  53.   ImageBackup(x,y);
  54.   ww=Image2->Width;
  55.   hh=Image2->Height;
  56.   drc=Rect(x,y,x+ww,y+hh);
  57.   src=Rect(0,0,ww,hh);
  58.   Image1->Canvas->CopyMode=cmSrcAnd;
  59.   Image1->Canvas->CopyRect(drc,Image3->Canvas,src);
  60.   Image1->Canvas->CopyMode=cmSrcPaint;
  61.   Image1->Canvas->CopyRect(drc,Image2->Canvas,src);
  62. }
  63. //---------------------------------------------------------------------------
  64. void __fastcall TForm1::FormActivate(TObject *Sender)
  65. {
  66.   SetMoveBmp(CurX,CurY);
  67. }
  68. //---------------------------------------------------------------------------
  69. void __fastcall TForm1::FormKeyDown(TObject *Sender, WORD &Key,
  70.       TShiftState Shift)
  71. {
  72.   if(Key==VK_LEFT)
  73.   {
  74.     if(CurX>=10)CurX-=10;
  75.     SetMoveBmp(CurX,CurY);
  76.   }
  77.   else if(Key==VK_RIGHT)
  78.   {
  79.     if((CurX+Image4->Width)<=Image1->Width)
  80.       CurX+=10;
  81.     SetMoveBmp(CurX,CurY);
  82.   }
  83.   else if(Key==VK_DOWN)
  84.   {
  85.     if((CurY+Image4->Height)<=Image1->Height)
  86.       CurY+=10;
  87.     SetMoveBmp(CurX,CurY);
  88.   }
  89.   else if(Key==VK_UP)
  90.   {
  91.     if(CurY>=10)CurY-=10;
  92.     SetMoveBmp(CurX,CurY);
  93.   }
  94.   else{}
  95. }
  96. //---------------------------------------------------------------------------