Create a Bitmap

[SuperNewbie]

Hi

On the window, I created a rectangle and filled it with a brush, now I want to save it in HBTIMAP and display it again on window

so, first I created a rectangle

HDC hdc,bmp_hdc;
HBITMAP hPicture;
.....
hdc = BeginPaint(hwnd, &ps);
			
hBrush = CreateSolidBrush(RGB(230,230,230));	// Creating brush for background
SelectObject(hdc, hBrush);				
Rectangle(hdc, 19, 49, 196, 194); // Drawing rectange that is 1 pixel larger than picture in every dimension
				
DeleteObject(hBrush);

/*The rectangle was created and filled with color,

secondly, created a BITMAPINFO structure;*/

BITMAPINFO bmp_info;
ZeroMemory( &bmp_info.bmiHeader, sizeof(BITMAPINFOHEADER) );
bmp_info.bmiHeader.biWidth = 16;//10;//4;//176;  // width should be divided by 4
bmp_info.bmiHeader.biHeight = 16; // should be maybe minus mark to make it right
bmp_info.bmiHeader.biPlanes = 1;
bmp_info.bmiHeader.biBitCount = 8; // 24bit colors
	
bmp_info.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmp_info.bmiHeader.biSizeImage = 0; 
bmp_info.bmiHeader.biCompression = BI_RGB; // No compression
bmp_info.bmiHeader.biClrUsed = 0; // When set to 0, colors used is counted on biBitCount
bmp_info.bmiHeader.biClrImportant= 0;

/*rest of the codes, I did like this:*/

bmp_hdc = CreateCompatibleDC(hdc);
hPicture = CreateDIBSection(hdc, &bmp_info, DIB_RGB_COLORS,NULL,NULL,0);
SelectObject(bmp_hdc,hPicture);

//now I copy size 16X16 from that rectangle to hPicture
BitBlt(bmp_hdc,0,0,16,16,hdc,19,49,SRCCOPY);
16, NULL, (BITMAPINFO*)&bmp_info, DIB_RGB_COLORS);

//again, show the hPicture in position (20,30) back in hdc
BitBlt(hdc,20,30,16,16,bmp_hdc,0,0,SRCCOPY);

but I could not display what I had copied from that rectangle, what's wrong with my code, thanks!!!!
Sorry for un-clear codes!!

[SuperNewbie]

Thanks, I got it, just the problem with

 
bmp_info.bmiHeader.biBitCount = 8;
/*it should be*/

bmp_info.bmiHeader.biBitCount = 24;

[anonytmouse]

Try this:

hBrush = CreateSolidBrush(RGB(230,230,230));
hOldBrush = SelectObject(hdc, hBrush);
Rectangle(hdc, 19, 49, 196, 194);
SelectObject(hdc, hOldBrush);
DeleteObject(hBrush);

bmp_hdc = CreateCompatibleDC(hdc);
hPicture = CreateCompatibleBitmap(hdc, 16, 16);
hOldPicture = SelectObject(bmp_hdc,hPicture);

BitBlt(bmp_hdc,0,0,16,16,hdc,19,49,SRCCOPY);

BitBlt(hdc,20,30,16,16,bmp_hdc,0,0,SRCCOPY);

SelectObject(bmp_hdc, hOldPicture);
DeleteObject(hPicture);
DeleteDC(bmp_hdc);