Button control with bitmap

Question

Hi, when i create an xp style button and then set the image, the xp style look of button disappears.
 

//create a push button


HWND hbutton1 = CreateControl(0, hParent, hInst, BS_PUSHBUTTON|BS_BITMAP|WS_CHILD|WS_VISIBLE , rc, id, "caption"

, ("BUTTON"

));

//set image


SendMessage(hbutton1, BM_SETIMAGE, IMAGE_BITMAP, LPARAM(img));


//img is the handle to bitmap

any ideas?

Answer 1

I have created sample and it works for me:

HWND hButton = CreateWindow(L"BUTTON", L"OK", WS_TABSTOP | WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON, 10, 10, 100, 50, hWnd, (HMENU)1000, (HINSTANCE)hInstance, NULL);
HBITMAP hBitmap = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP));
SendMessage(hButton, BM_SETIMAGE, (WPARAM)IMAGE_BITMAP, (LPARAM)(HBITMAP)hBitmap);
DeleteObject((HBITMAP)hBitmap);

Answer 2

It doesn't work at all if i don't set the BS_BITMAP style as i saw in your code.

Answer 3

To understand usage of BS_BITMAP look here (remarks section).

On my Vista:

when I add manifest dependency

#pragma comment(linker, "/manifestdependency:\"type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")

bitmap displays correctly with my code posted above,

when I remove it, bitmap doesn't appear

I don't know why =) Maybe someone from the MVPs can help

Answer 4

If i use DeleteObject() right after setting the image, the image just wouldn't appear.

Answer 5

OK. I googled some more and found this CodeProject article.

It seems to me that BS_BITMAP cannot be used with visual theme under XP.

Under Vista works correctly.