functions/passing problem

This is a discussion on functions/passing problem within the C++ Programming forums, part of the General Programming Boards category; The stretchDibBits nearish the bottom doesn't blit anything to the screen like it was just before i moved all my ...

  1. #1
    Mmm. Purple.
    Join Date
    May 2002
    Posts
    154

    functions/passing problem

    The stretchDibBits nearish the bottom doesn't blit anything to the screen like it was just before i moved all my code around, i'm thinking all the pointerness being passed between the functions not being right.
    Code:
    #include <windows.h>
    #include <math.h>
    #include <stdlib.h>
    #define MENU_EXIT 0
    #define MENU_NORMAL 1
    #define MENU_DOUBLE 2
    #define MENU_TRIPLE 3
    
    DWORD WINAPI Emulate(LPVOID);
    void DrawScreen(int *, char *);
    int xsize=160;
    int ysize=144;
    int map=0x9800;
    int tile=0x8000;
    char ram[0xFFFF];
    int pal[4]={0xFFFFFF,0xC0C0C0,0x808080,0x000000};
    void DrawTile(int *,char *,int,int,int,int);
    LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
    HWND hwnd;
    BITMAPINFO bmi;
    int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow){
    MSG msg;
    WNDCLASSEX wc;
    HMENU menu,submenu,options,doubles;
    menu = CreateMenu();
    submenu = CreatePopupMenu();
    AppendMenu(submenu, MF_STRING, MENU_EXIT, "E&xit");
    AppendMenu(menu, MF_STRING | MF_POPUP, (UINT)submenu, "&File");
    options = CreatePopupMenu();
    AppendMenu(menu,MF_STRING | MF_POPUP, (UINT)options,"Options");
    AppendMenu(options,MF_STRING, MENU_NORMAL, "100% size");
    AppendMenu(options,MF_STRING, MENU_DOUBLE, "200% size");
    AppendMenu(options,MF_STRING, MENU_TRIPLE, "300% size");
    
    wc.cbSize = sizeof(WNDCLASSEX);
    wc.style = 0;
    wc.lpfnWndProc = WndProc;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hInstance = hInstance;
    wc.hIcon = LoadIcon(NULL,IDI_APPLICATION);
    wc.hCursor = LoadCursor(NULL,IDC_ARROW);
    wc.hbrBackground = (HBRUSH)COLOR_WINDOW;
    wc.lpszMenuName = NULL;
    wc.lpszClassName = "Emulator";
    wc.hIconSm = NULL;
    RegisterClassEx(&wc);
    hwnd = CreateWindowEx(0,"Emulator","Gameboy",WS_VISIBLE | WS_SYSMENU,CW_USEDEFAULT,CW_USEDEFAULT,4+xsize,44+ysize,NULL,menu,hInstance,NULL);
    while(GetMessage(&msg, NULL, 0, 0)>0)
     {
      TranslateMessage(&msg);
      DispatchMessage(&msg);
     }
     return msg.wParam; 
    }    
    LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam){
     switch(msg)
      {
       case WM_CREATE:
    
       break;
       case WM_COMMAND:
        switch(LOWORD(wParam)) {
         case MENU_EXIT:
          PostMessage(hwnd, WM_CLOSE, 0, 0);
         break;
         case MENU_NORMAL:
          xsize=160;
          ysize=144;
          SetWindowPos(hwnd,HWND_TOP,0,0,xsize+4,ysize+44,SWP_NOMOVE);
          InvalidateRect(hwnd,NULL,FALSE);
         break;
         case MENU_DOUBLE:
          xsize=320;
          ysize=288;
          SetWindowPos(hwnd,HWND_TOP,0,0,xsize+4,ysize+44,SWP_NOMOVE);
          InvalidateRect(hwnd,NULL,FALSE);
         break;
         case MENU_TRIPLE:
          xsize=640;
          ysize=576;
          SetWindowPos(hwnd,HWND_TOP,0,0,xsize+4,ysize+44,SWP_NOMOVE);
          InvalidateRect(hwnd,NULL,FALSE);
         break;
        }
       break;
       case WM_PAINT:
    
       break;
       case WM_CLOSE:
        DestroyWindow(hwnd);
       break;
       case WM_DESTROY:
        //free(memory);
        PostQuitMessage(0);
       break;
       default:
    	return DefWindowProc(hwnd, msg, wParam, lParam);
      }
     return 0;
    }
    DWORD WINAPI Emulate(LPVOID hWnd){
    
     HDC hdc;
     PAINTSTRUCT ps;
     static int *memory;
     ZeroMemory(&bmi, sizeof(BITMAPINFO));
     bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
     bmi.bmiHeader.biPlanes = 1;
     bmi.bmiHeader.biBitCount = 32;
     bmi.bmiHeader.biCompression = BI_RGB;
     bmi.bmiHeader.biWidth = 160;
     bmi.bmiHeader.biHeight = -144;
     memory = (int *) malloc(160 * 144 * sizeof(int));
     ram[map]=0;
     ram[tile+0]=0x80;
     ram[tile+1]=0x80;
     ram[tile+2]=0xFF;
     ram[tile+3]=0xFF;
     ram[tile+4]=0xD5;
     ram[tile+5]=0x9D;
     ram[tile+6]=0xD5;
     ram[tile+7]=0x9D;
     ram[tile+8]=0xD4;
     ram[tile+9]=0x9C;
     ram[tile+10]=0xDF;
     ram[tile+11]=0x9F;
     ram[tile+12]=0xC0;
     ram[tile+13]=0x80;
     ram[tile+14]=0xFF;
     ram[tile+15]=0xFF;
     DrawScreen(memory,ram);
     return 0;
    }
    void DrawTile(int *memory,char *ram,int map,int tile,int x,int y){ //y = 0-31, x=0-31
     int tileaddy=map+(y*32)+x; //address of tilenumber
     int finaladdy=tile+(ram[tileaddy]*0x10); //address of tile bytes
     char temp;
     for(int c=0;c<=15;c+=2){
      for(int a=0;a<=7;a++){
       temp =((ram[finaladdy+c])&(128/((int)pow(2,a))));
       if(temp!=0){temp=2;}
       temp|=((ram[finaladdy+c+1]) & (128/((int)pow(2,a))))>>(7-a);  
       memory[(((y*8)+(c/2))*160)+(x*8)+(a)]=(int)pal[temp];
      }
     }
    }
    void DrawScreen(int *memory, char *ram){
     HDC hdc;
     PAINTSTRUCT ps;
     hdc=BeginPaint(hwnd,&ps);
     for(int b=0;b<=17;b++){
      for(int a=0;a<=19;a++){
       DrawTile(memory,ram,map,tile,a,b);
      }
     }
     StretchDIBits(hdc, 0, 0, xsize, ysize, 1, 0, 160, 144, (void *) memory, &bmi, DIB_RGB_COLORS, SRCCOPY);
     EndPaint(hwnd, &ps);
     InvalidateRect(hwnd,NULL,FALSE);
    }

  2. #2
    Mmm. Purple.
    Join Date
    May 2002
    Posts
    154
    omg i think in my haste i forgot to acctualy call the function i made :X
    [edit] I added a createthread and it still doesn't draw, oh dear [/edit]
    [edit*2] CreateThread returns error 87 whatever that is [/edit]


    I'm going to just rewrite the whole think rather than do some dirty hacks, feel free to delete this thread.
    Last edited by krappykoder; 02-14-2005 at 12:14 PM.

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