How to open image in folder near executable in c++

Question

I'm setting up a simple window in c++ Win32 which will show GIF animation as background. And the file is in directory of executable+gifs\test.gif. And how to split executable name then append other path???? How can I do it?

I've tried with giving full path of gif and it worked, but it won't work on another computer.

#define DRAW_ANIM   1
static HWND hWnd;
static HDC hMWDC;
static Graphics* pGphcs = NULL;
static Image* pImg = NULL;
static unsigned int nFrm = 0, nFrmCnt = 0;
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {


    switch (msg) {
    case WM_CREATE: 

        hMWDC = GetDC(hwnd);
            pGphcs = new Graphics(hMWDC);

            pImg = new Image(L"gifs\\test.gif");
            if (pImg) {
                nFrmCnt = pImg->GetFrameCount(&FrameDimensionTime);
                SetTimer(hwnd, DRAW_ANIM, 100, NULL);

            }

        break;

    case WM_TIMER:
        if (wParam == DRAW_ANIM)
        {
            pImg->SelectActiveFrame(&FrameDimensionTime, nFrm);
            Rect DRC(0, 0, pImg->GetWidth(), pImg->GetHeight());
            pGphcs->Clear(Color(128, 128, 128));
            pGphcs->DrawImage(pImg, DRC);
            if (nFrm < (nFrmCnt - 1)) nFrm++; else nFrm = 0;
        }
        break;

    case WM_CLOSE:
        DestroyWindow(hwnd);
        break;
    case WM_DESTROY:

    delete pGphcs;
        delete pImg;
        ReleaseDC(hwnd, hMWDC);
        KillTimer(hwnd, DRAW_ANIM);
        PostQuitMessage(0);
        break;

    default:
        return DefWindowProc(hwnd, msg, wParam, lParam);
    }
    return 0;
}

I expect a gif showing, but nothing. ;(

Possible duplicate of [How to get the application executable name in WindowsC++/CLI?](https://stackoverflow.com/questions/124886/how-to-get-the-application-executable-name-in-windowsc-cli) — zett42, Jul 20 '19 at 19:50
No. My question is near to that, but I'm asked it for another result and for getting gif Executable Path.Split(EXECUTABLE NAME).append(other path)). — TheGamerCoder, Jul 20 '19 at 20:37
Then your question should be "how to split a path", which has already been answered many times on SO. — zett42, Jul 20 '19 at 21:34

score 1 · Answer 1 · answered Jul 18 '19 at 11:33

1

You need to have the timer cause a WM_PAINT message (say, by calling InvalidateRect()) and draw the current frame in response to that message.

Also, respond to WM_ERASEBKGND and don't erase the background (return nonzero).

answered Jul 18 '19 at 11:33

Michael Chourdakis

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Emm... case WM_PAINT: – TheGamerCoder Jul 18 '19 at 11:36

Remy Lebeau · Accepted Answer · 2019-07-18T17:58:01.543

1

Do not load files using relative paths. Use absolute paths instead. Use GetModuleFileName() to get the full path to your EXE, then strip off the filename portion and append the relative path for your GIF.

#include <shlwapi.h>

WCHAR path[MAX_PATH];
GetModuleFileNameW(NULL, path, MAX_PATH);
PathRemoveFileSpecW(path);
PathAppendW(path, L"gifs\\test.gif");
pImg = new Image(path);

edited Jul 18 '19 at 17:58

answered Jul 18 '19 at 17:52

Remy Lebeau

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1

Minor nitpick... be careful with `PathAppend` functions, there are newer and 'safer' ones in `` – Mgetz Jul 18 '19 at 18:03
@Mgetz I'm aware of the "safer" ones. But note that they are only available on Windows 8+. A lot of developers (myself included) still support older versions, at least Windows 7 – Remy Lebeau Jul 18 '19 at 19:14
But can you help in one problem? – TheGamerCoder Jul 19 '19 at 06:52
There are a Rectangle in gray colour with size of minimized window. And I am showing window in SW_SHOWMAXIMAZED. And Textbox and button hidding behind gif. How can i solve it? – TheGamerCoder Jul 19 '19 at 07:15
@TheGamerCoder those are different issues than the one asked in this question. You should post new questions for them. – Remy Lebeau Jul 19 '19 at 08:40
OK. I did it. :) – TheGamerCoder Jul 19 '19 at 12:13

How to open image in folder near executable in c++

2 Answers2