为什么创建这样创建位图显示不出来

[erensheep]

我创建一个真彩色24位的位图，高宽都是2个象素，然后算得每行宽8个字节，我采用直接赋值的方法测试，但是画不出来，请问是这样创建吗？请大侠赐教
int cx = 2;
int cy = 2;
int nWidthBytes = 4 * ((cx * 24 + 31) / 32);
static BITMAP bitmap = {0,cx,cy,nWidthBytes,1,24};
static BYTE bits[16] =
{
177, 233, 144, 0, 122, 244,0,0,
122, 122, 133, 0, 255, 233,0,0
};
bitmap.bmBits = bits;
hBitmap = CreateBitmapIndirect(&bitmap);

[lanstar200]

CreateDIBitmap()应该可以

[erensheep]

请说具体点行吗，为什么DDB创建不行呢？

[lanstar200]

int cx = 2;
int cy = 2;
int nWidthBytes = 4 * ((cx * 24 + 31) / 32);
static BYTE bits[16] =
{
177, 233, 144, 0, 122, 244,0,0,
122, 122, 133, 0, 255, 233,0,0
};
//首先创建一个缓冲用来存放位图头和数据
BITMAPINFOHEADER *lpbmi = (BITMAPINFOHEADER *)malloc( sizeof(BITMAPINFOHEADER) + sizeof(bits));
ZeroMemory(lpbmi , sizeof(BITMAPINFOHEADER) + sizeof(bits) );
//初始化位图头
lpbmi->biSize = sizeof(BITMAPINFOHEADER);
lpbmi->biClrImportant = 0;
lpbmi->biClrUsed = 0;
lpbmi->biBitCount = 24;
lpbmi->biCompression = BI_RGB;
lpbmi->biPlanes = 1;
lpbmi->biHeight = 2;
lpbmi->biWidth = 2;
lpbmi->biSizeImage = 2 * 2 * 3;
lpbmi->biXPelsPerMeter = 0x00000EC4;
lpbmi->biYPelsPerMeter = 0x00000EC4;

//复制位图数据
memcpy(((LPBYTE)lpbmi + sizeof(BITMAPINFOHEADER)) , bits , sizeof(bits));
//创建位图
HDC hdc = ::GetDC(GetSafeHwnd());
HDC dcMem = ::CreateCompatibleDC(hdc);
HBITMAP hBitmap = CreateDIBitmap( hdc , lpbmi , CBM_INIT ,
(LPBYTE)lpbmi + sizeof(BITMAPINFOHEADER) ,
(LPBITMAPINFO)lpbmi ,
DIB_RGB_COLORS);
//画图
HBITMAP holdbm = (HBITMAP)SelectObject(dcMem , hBitmap);
BitBlt(hdc , 0 , 0 , 2 , 2 , dcMem , 0 , 0 , SRCCOPY);
SelectObject(dcMem , holdbm);
DeleteDC(dcMem);

[lanstar200]

少复制了2句

free(lpbmi);
lpbmi = NULL;

[lanstar200]

上面胡乱写的，不太规范，看这个
int cx = 2;
int cy = 2;
int nWidthBytes = 4 * ((cx * 24 + 31) / 32);
DWORD dwDIBSize = nWidthBytes * cy *3;
static BYTE bits[16] =
{
177, 233, 144, 0, 122, 244,0,0,
122, 122, 133, 0, 255, 233,0,0
};
//首先创建一个缓冲用来存放位图头和数据
BITMAPINFOHEADER *lpbmi = (BITMAPINFOHEADER *)malloc( sizeof(BITMAPINFOHEADER) + dwDIBSize);
ZeroMemory(lpbmi , sizeof(BITMAPINFOHEADER) + dwDIBSize );
//初始化位图头
lpbmi->biSize = sizeof(BITMAPINFOHEADER);
lpbmi->biClrImportant = 0;
lpbmi->biClrUsed = 0;
lpbmi->biBitCount = 24;
lpbmi->biCompression = BI_RGB;
lpbmi->biPlanes = 1;
lpbmi->biHeight = cy;
lpbmi->biWidth = cx;
lpbmi->biSizeImage = cx * cy * 3;
lpbmi->biXPelsPerMeter = 0x00000EC4;
lpbmi->biYPelsPerMeter = 0x00000EC4;

//复制位图数据
memcpy(((LPBYTE)lpbmi + sizeof(BITMAPINFOHEADER)) , bits , dwDIBSize);
//创建位图
HDC hdc = ::GetDC(GetSafeHwnd());
HDC dcMem = ::CreateCompatibleDC(hdc);
HBITMAP hBitmap = CreateDIBitmap( hdc , lpbmi , CBM_INIT ,
(LPBYTE)lpbmi + sizeof(BITMAPINFOHEADER) ,
(LPBITMAPINFO)lpbmi ,
DIB_RGB_COLORS);
//画图
HBITMAP holdbm = (HBITMAP)SelectObject(dcMem , hBitmap);
BitBlt(hdc , 0 , 0 , 2 , 2 , dcMem , 0 , 0 , SRCCOPY);
SelectObject(dcMem , holdbm);
DeleteDC(dcMem);
free(lpbmi);
lpbmi = NULL;

[erensheep]

感谢老兄，成功了

[lanstar200]

mark

[stoone]

mark too

[酒红绿叶]

我通常不用DDB创建。
mark。