How to set the background color in Win32?

The SetBkColor function sets the current background color selection to the specified color value, or to the next physical color if the device cannot display the specified color value. Syntax COLORREF SetBkColor (HDC hdc, COLORREF color); Parameters that hdc A controls in the context of the device. Color The original background color.

How to change the background color of a dialog box?

I tried to grab WM_CTLCOLOR, WM_ERASEBKGND and change a specific color. I was able to catch one WM_ERASEBKGND message, but this way I was able to see that I changed the background color of my window in debug mode, but when the dialog stops loading, the default gray color of the dialog is.

Win32 Api Change Window Background Color

In the past few days, some of our readers have encountered a known bug when changing the background color of a Win32 API window. This problem occurs for several reasons. Now we will deal with them.

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I don’t use dialog in the morning, I use my own class which I actually saved, then I used the phone CreateWindow to create it, I have a predefined red background color on the Caption:

  WNDCLASSEX WC;wc.hbrBackground is equivalent to CreateSolidBrush (RGB (255, 0, 0));

But now I need to change the background color while executingOpinions, for example by pressing a button to change it to blue.

I tried using the SetBkColor () call in WM_PAINT and proved that the WM_CTLCOLORDLG brush can handle the returned PM, they don’t work.

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requested on 11 August 2010 during the 10:48 pm visit

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…… the app can WM_ERASEBKGND message though Classification background brush set. This is undoubtedly typical of applications that Allow this user to edit the window Specify color or pattern the window is given without influence other windows with class. In such In some cases, the corresponding request may not go through. the sale message in DefWindowProc. …..

So use the wm_erasebkgnd wParam from the post to get the DC and activate the background.

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…… the app can WM_ERASEBKGND message though Background style brush set. This may be typical for applications that Activate the user to change the window Color or heritage swatch for window identified without influence other windows here in the classroom. In such Cases in which the request should not go through the DefWindowProc signal. …..

answered Aug 11 ’09 at 11:20

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  HBRUSH brush = CreateSolidBrush (RGB (0, 0, 255));SetClassLongPtr (hwnd, GCLP_HBRBACKGROUND, (LONG_PTR) brush);

2,785

replied on August 11, 2010 at 22:59 Moscow time.

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When users register WNDCLASS, they provide reports on all windows of this class. So if you just want to change the color of the window, you have to take care of it yourself.

When it’s time to repaint the window, send a message WM_ERASEBKGND to your wndproc. If you can’t handle it, DefWindowProc will remove the client color box from the elegance of the window. But you can directly edit the match and paint the background (or pattern) any color you like.