Fast screen, window, region and print screen capture

<br />
HBITMAP hbm;<br />
HDC screendc;<br />
HDC imagedc;<br />
int w;<br />
int h;<br />
<br />
int init(void)<br />
{<br />
screendc = GetDC(NULL);<br />
imagedc = CreateCompatibleDC(screendc);<br />
w = GetSystemMetrics(SM_CXSCREEN);<br />
h = GetSystemMetrics(SM_CYSCREEN);<br />
<br />
hbm = CreateCompatibleBitmap(imagedc,w,h);<br />
ReleaseDC(NULL,screendc);<br />
}<br />
<br />
void CaptureSave(LPSTR szFname)<br />
{<br />
SelectObject(imagedc,hbm);<br />
screendc = GetDC(NULL);<br />
BitBlt(imagedc,0,0,w,h,screendc,0,0,SRCCOPY);<br />
ReleaseDC(NULL,screendc);<br />
<br />
ConvertSaveDIB(szFname,hbm);<br />
}<br />
<br />
void ConvertSaveDIB(LPSTR fn,HBITMAP bm)<br />
{<br />
//???<br />
//I have no idea how to convert from DDB to DIB....<br />
//I know how to save the file , but in C it's an altogether <br />
//different problem to get it into the right format...<br />
<br />
//I think I saw some code once to do this , but I forgot where...<br />
<br />
//Sorry guys , I wish I could be of more help... but I'm stuck on this<br />
//one as well....if anyone can help , it would be appreciated.<br />
}<br />

<br />
{<br />
//.......some code<br />
SnapShot("img0.bmp");<br />
//.......some code<br />
}<br />
 <br />
int SnapShot(char* fname)<br />
{<br />
HBITMAP hdib;<br />
BITMAPINFO bi;<br />
BITMAPFILEHEADER bfh;<br />
void *bits; // the dib information...<br />
bits=NULL;<br />
<br />
int WIDTH,HEIGHT,BPP;<br />
WIDTH = GetSystemMetrics(SM_CXSCREEN);<br />
HEIGHT=GetSystemMetrics(SM_CYSCREEN);<br />
BPP = 24; <br />
//you can use GetSystemMetrics(SM_BITSPERPEL); <br />
// for this call , but i like to use one<br />
//uniform standard for all my dibs :)<br />
<br />
bi.bmiHeader.biSize = 40;<br />
bi.bmiHeader.biWidth = WIDTH;<br />
bi.bmiHeader.biHeight = HEIGHT;<br />
bi.bmiHeader.biPlanes = 1;<br />
bi.bmiHeader.biBitCount = BPP;<br />
bi.bmiHeader.biCompression = BI_RGB;<br />
bi.bmiHeader.biSizeImage = (BPP/8)*(WIDTH)*(HEIGHT);<br />
bi.bmiHeader.biXPelsPerMeter =0;<br />
bi.bmiHeader.biYPelsPerMeter =0;<br />
bi.bmiHeader.biClrUsed =0;<br />
bi.bmiHeader.biClrImportant =0;<br />
<br />
bfh.bfType = 0x4D42;<br />
bfh.bfOffBits = sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER);<br />
bfh.bfSize = bi.bmiHeader.biSizeImage+bfh.bfOffBits;<br />
bfh.bfReserved1 = 0;<br />
bfh.bfReserved2 = 0;<br />
<br />
HDC hdc = GetDCEx (hWnd,NULL, DCX_CACHE|DCX_LOCKWINDOWUPDATE) ;<br />
HDC fdc = CreateCompatibleDC(hdc);<br />
<br />
hdib = CreateDIBSection(fdc,&bi,DIB_RGB_COLORS,&bits,NULL,0);<br />
    SelectObject(fdc,hdib);<br />
BitBlt(fdc,0,0,WIDTH,HEIGHT,hImgDC,0,0,SRCCOPY);<br />
ReleaseDC(hWnd,hdc); <br />
<br />
 <br />
<br />
//this creates a directory called "snapshots" <br />
//and tells the user what's happening<br />
<br />
char firstpath[255];<br />
GetCurrentDirectory(255,firstpath);<br />
if(SetCurrentDirectory("SnapShots") == 0)<br />
CreateDirectory("SnapShots",NULL); <br />
SetCurrentDirectory(firstpath);<br />
<br />
char *tempbuffer=malloc(sizeof(char)*255);<br />
sprintf(tempbuffer,"%s\\SnapShots\\%s",firstpath,fname);<br />
<br />
MessageBox(NULL,tempbuffer,"Creating...",MB_OK);<br />
<br />
BOOL bSuccess = FALSE ;<br />
DWORD dwBytesWritten ;<br />
HANDLE hFile ;<br />
hFile = CreateFile (tempbuffer, GENERIC_WRITE,FILE_SHARE_WRITE, NULL,<br />
CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL) ; <br />
if (hFile == INVALID_HANDLE_VALUE)<br />
return FALSE ;<br />
bSuccess = WriteFile (hFile,&bfh,sizeof(bfh), &dwBytesWritten, NULL) ;<br />
<br />
bSuccess = WriteFile (hFile,&bi.bmiHeader,sizeof(bi.bmiHeader), &dwBytesWritten, NULL) ;<br />
<br />
bSuccess = WriteFile (hFile,bits,bi.bmiHeader.biSizeImage, &dwBytesWritten, NULL) ;<br />
<br />
CloseHandle (hFile) ;<br />
DeleteDC(fdc);<br />
DeleteObject(hdib);<br />
free(tempbuffer);<br />
return TRUE;<br />
}<br />