Image opening with Visual C++

Hi everyone,

I am able to create GUI applications, and can create a window, but I don't know how to work with images. What commands can I use to display a picture in a window? Do you have any examples?

Thanks.

Maybe someone could giv me an example of how a Bitmap resource looks in the .rc file?

Thanks.

theForger's Win32 API Tutorial, specifically Bitmaps, Device Contexts and BitBlt

Thanks. This is the content of my .rc file:

Code:

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#include "resource.h"
#include "windows.h"     

IDB_BITMAP1                BITMAP  DISCARDABLE    "Image.bmp"

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...However, I get the following compilation error:

Code:

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fatal error RC1004: unexpected end of file found

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Forgot to include stdafx.h?

Thanks - I added it, but now I get:

Code:

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fatal error C1083: Cannot open include file: 'stdafx.h': No such file or directory

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What compiler are you using? In VC++ you should write

Code:

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#include <windows.h>

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You should include stdafx.h only if you are using precompiled headers and it include file is stdafx.h.

Please post another code and header file of your program if possible.

This is related to the source and not to precompiled headers or stdafx.h.
So, posting your resource.h and the resource file might not be a bad idea.

Thanks,

I started with an empty project in the 'General' tab in VC++ 2008 Express. Here is the code:

Source:

Code:

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#include <windows.h>
#include <stdafx.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,
                          "Bitmap",
                          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);

            bmpExercising = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_BITMAP1));
            MemDCExercising = CreateCompatibleDC(hDC);
            SelectObject(MemDCExercising, bmpExercising);

            BitBlt(hDC, 10, 10, 450, 400, MemDCExercising, 0, 0, SRCCOPY);

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

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Resource (I have no idea how to write a Bitmap resource):

Code:

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#include "resource.h"
#include "windows.h"     

IDB_BITMAP1    BITMAP  DISCARDABLE    "C:\Documents and Settings\XP\My Documents\My

Pictures\Image.bmp"

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Header:

Code:

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#include "windows.h"

#define IDB_BITMAP1              1000

---

Thanks.

put

Code:

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#include <stdafx.h>

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in .rc file

I've managed it another way - I think it may have been my resource editor program that wasn't set up properly, as I re-made my .rc file, and it gave me this:

Code:

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#include <windows.h>
#include <commctrl.h>
#include <richedit.h>
#include "resource.h"


LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
IDB_BITMAP1        BITMAP        "bitmap1.bmp"

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http://i302.photobucket.com/albums/n...ageprogram.png

I can't follow link.

Provide that here please.

I don't know how to do that - how do I embed images on this forum? Here is another hyperlink:

Link

The next thing I am interested in doing is downloading an image from the net and displaying it in that frame. For example, if I want to download this image every time the program starts:

http://sohowww.nascom.nasa.gov/data/...024/latest.jpg

Is this hard t do?

Thanks.

I just don't.

Quote:

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The next thing I am interested in doing is downloading an image from the net and displaying it in that frame. For example, if I want to download this image every time the program starts:

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So you can't load images yet and you already want to do another task related to images? Google is your friend. Do a little research and come back with a specific directed question about the problems you are having and we can offer more assistance.

I've managed a program that downloads this image (http://sohowww.nascom.nasa.gov/data/...24/latest.html) whenever it is run, saves it as a .bmp and then opens another program to display it, but I get the message that the .bmp is not in 3.00 format. Is there some code to convert it to this?

Thanks.

I have another question:

I am learning to display bitmaps in dialog boxes, and have the following code for a resource:

Code:

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    CONTROL        IDB_SUNPIC, IDC_SUNFRAME, WC_STATIC, SS_BITMAP, 30, 12, 341, 236

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This puts a picture frame in a dialog box called IDC_SUNFRAME, intended to display an image called IDB_SUNPIC on a dialog box. I compile this, but get the error telling me that WC_STATIC is undefined. I tried defining it in the resource header as -2, but this time, although the program runs, nothing happens when I press the button to open the dialog box with the picture fram in it.

What could be wrong? How do you define WC_STATIC?

Thanks.