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real calculator

moot1 (259)
i use dev c++ and you know how when you run the program it goes to a black screen and performs the task you want. you also know that when you buy your computer it comes with a calculater and has the buttons you can click and stuff like that..can you do thaat in c++? like can you make it actually look like a real calculator like the one that comes with the computer - thanks
Moschops (7244)
can you do thaat in c++?


Yes.

like can you make it actually look like a real calculator like the one that comes with the computer


Yes.
moot1 (259)
how?
Moschops (7244)
Same answer as the other thread.
moot1 (259)
oh graphics?
Moschops (7244)
Well, yes. It's a graphic of a calculator.
moot1 (259)
Well, yes. It's a graphic of a calculator.
what do you mean
happykiller (83)
@Moschops I think he knows that. If you already replied here why don't you show him the code. Sorry Moschops man, that really annoyed me...

EDIT: You have also deleted the post i replied you of.
Last edited on
Moschops (7244)
why don't you show him the code.


Okay.

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#include <windows.h>
#include "Resource.h"

HINSTANCE hInst;
LRESULT CALLBACK WindProcedure(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam);

INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
                   LPSTR lpCmdLine, int nCmdShow)
{
    WNDCLASSEX  WndCls;
    static char szAppName[] = "BitmapIntro";
    MSG         Msg;

	hInst       = hInstance;
    WndCls.cbSize        = sizeof(WndCls);
    WndCls.style         = CS_OWNDC | CS_VREDRAW | CS_HREDRAW;
    WndCls.lpfnWndProc   = WindProcedure;
    WndCls.cbClsExtra    = 0;
    WndCls.cbWndExtra    = 0;
    WndCls.hInstance     = hInst;
    WndCls.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
    WndCls.hCursor       = LoadCursor(NULL, IDC_ARROW);
    WndCls.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
    WndCls.lpszMenuName  = NULL;
    WndCls.lpszClassName = szAppName;
    WndCls.hIconSm       = LoadIcon(hInstance, IDI_APPLICATION);
    RegisterClassEx(&WndCls);

    CreateWindowEx(WS_EX_OVERLAPPEDWINDOW,
                          szAppName,
                          "Bitmaps Fundamentals",
                          WS_OVERLAPPEDWINDOW | WS_VISIBLE,
                          CW_USEDEFAULT,
                          CW_USEDEFAULT,
                          CW_USEDEFAULT,
                          CW_USEDEFAULT,
                          NULL,
                          NULL,
                          hInstance,
                          NULL);

    while( GetMessage(&Msg, NULL, 0, 0) )
    {
        TranslateMessage(&Msg);
        DispatchMessage( &Msg);
    }

    return static_cast<int>(Msg.wParam);
}

LRESULT CALLBACK WindProcedure(HWND hWnd, UINT Msg,
			   WPARAM wParam, LPARAM lParam)
{
    HDC hDC, MemDCExercising;
    PAINTSTRUCT Ps;
    HBITMAP bmpExercising;

    switch(Msg)
    {
	case WM_DESTROY:
	    PostQuitMessage(WM_QUIT);
	    break;
	case WM_PAINT:
	    hDC = BeginPaint(hWnd, &Ps);

	    // Load the bitmap from the resource
	    bmpExercising = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_EXERCISING));
	    // Create a memory device compatible with the above DC variable
	    MemDCExercising = CreateCompatibleDC(hDC);
             // Select the new bitmap
             SelectObject(MemDCExercising, bmpExercising);

	    // Copy the bits from the memory DC into the current dc
	    BitBlt(hDC, 10, 10, 450, 400, MemDCExercising, 0, 0, SRCCOPY);

	    // Restore the old bitmap
	    DeleteDC(MemDCExercising);
	    DeleteObject(bmpExercising);
	    EndPaint(hWnd, &Ps);
	    break;
	default:
	    return DefWindowProc(hWnd, Msg, wParam, lParam);
    }
    return 0;
}



Not very informative, and it will only work on Win32, and relies on him having a resource file with the appropriate contents. It was the best guess I could make about what kind of OS he might be using. I grabbed it from some webpage, and it's as informative here as it was there to someone at Moot's level.

This is why I didn't just "show him the code". Because graphics programming involves so many variables of computer and OS, and relies on so much prior-knowledge, that it's either too complicated to be useful, or it's done using a toolkit that makes the code so simple as to be of zero educational value.
Last edited on
moot1 (259)
ok thanks for the help
happykiller (83)
@Moschops And.. you are done, no arguments no nothing... bravo...
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