R – How to change the background of a STATIC win32 control

cuser interfacewinapi

If the parent form of a (text) static control has a pattern on its background, then the area around the static control is an ugly blotch of solid color. How can I paint the background of the static control with the same pattern that its parent window uses?

I've tried this,

SetClassLong(retval , GCL_HBRBACKGROUND, (LONG)stripes);

where retval was an HWND, pointing to the static control I just created,
and stripes is an HBRUSH created from a bitmap. I tried with this, too:

SetClassLongPtr(retval , GCLP_HBRBACKGROUND, (LONG)stripes);

Neither of them worked. Does anyone know how to change the background of a static control in C?

Update

I handled the WM_CTLCOLORSTATIC message, which worked to an extent–it filled up the empty space in all the labels with the pattern I wanted. But the color right behind the text was just white… How can I make the pattern fill up that space as well?

Nevermind, got it.
SetBkMode(hdc, TRANSPARENT);

Best Answer

You can set the background color for a static control by handling the WM_CTLCOLOR message.

From the documentation

If an application processes this message, it returns a handle to a brush. The system uses the brush to paint the background of the control.

The message also passes a pointer to the display context that you can use.

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Executive summary:

int a[17];
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Full answer:

To determine the size of your array in bytes, you can use the sizeof operator:

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On my computer, ints are 4 bytes long, so n is 68.

To determine the number of elements in the array, we can divide the total size of the array by the size of the array element. You could do this with the type, like this:

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Update

Best Answer

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