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eeds136 2014-04-14
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我主要实现图像可以让ＭＡＴＬＡＢ调用，请问怎么弄？这是具体：http://bbs.csdn.net/topics/390748479
buyong 2014-04-11
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vc、msdn带的demo里就有
赵4老师 2014-04-11
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仅供参考
#pragma comment(lib,"gdi32")
#include <windows.h>
#include <stdio.h>
int main() {
const DWORD uWidth = 18 + 17 * 256, uHeight = 18 + 17 * 128;
PBITMAPINFO pbmi = (PBITMAPINFO) LocalAlloc (LPTR, sizeof (BITMAPINFOHEADER) + sizeof (RGBQUAD) * 2);
pbmi->bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
pbmi->bmiHeader.biWidth = uWidth;
pbmi->bmiHeader.biHeight = uHeight;
pbmi->bmiHeader.biPlanes = 1;
pbmi->bmiHeader.biBitCount = 1;
pbmi->bmiHeader.biSizeImage = ((uWidth + 31) & ~31) / 8 * uHeight;
pbmi->bmiColors[0].rgbBlue = 0;
pbmi->bmiColors[0].rgbGreen = 0;
pbmi->bmiColors[0].rgbRed = 0;
pbmi->bmiColors[1].rgbBlue = 255;
pbmi->bmiColors[1].rgbGreen = 255;
pbmi->bmiColors[1].rgbRed = 255;
HDC hDC = CreateCompatibleDC (0);
void * pvBits;
HBITMAP hBitmap = CreateDIBSection (hDC, pbmi, 0, &pvBits, NULL, 0);
SelectObject (hDC, hBitmap);
HFONT hFont = CreateFont (16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "宋体");
// HFONT hFont = CreateFont (16, 0, 0, 0, 0, 0, 0, 0, SHIFTJIS_CHARSET, 0, 0, 0, 0, "宋体");
SelectObject (hDC, hFont);
BitBlt (hDC, 0, 0, uWidth, uHeight, NULL, 0, 0, WHITENESS);
char c[4];
int i, j;
for (i = 128; i < 256; i++) {
sprintf (c, "%02X", i);
TextOut (hDC, 1, (i - 127) * 17 + 1, c, 2);
}
for (j = 0; j < 256; j++) {
sprintf (c, "%02X", j);
TextOut (hDC, (j + 1)* 17 + 1, 1, c, 2);
}
for (i = 128; i < 256; i++) {
for (j = 0; j < 256; j++) {
c[0] = (char) i;
c[1] = (char) j;
TextOut (hDC, (j + 1) * 17 + 1, (i - 127) * 17 + 1, c, 2);
}
}
for (i = 0; i < 130; i++) {
MoveToEx (hDC, 0, i * 17, NULL);
LineTo (hDC, uWidth, i * 17);
}
for (j = 0; j < 258; j++) {
MoveToEx (hDC, j * 17, 0, NULL);
LineTo (hDC, j * 17, uHeight);
}
BITMAPFILEHEADER bmfh;
bmfh.bfType = *(PWORD) "BM";
bmfh.bfReserved1 = 0;
bmfh.bfReserved2 = 0;
bmfh.bfOffBits = sizeof (BITMAPFILEHEADER) + sizeof (BITMAPINFOHEADER) + sizeof (RGBQUAD) * 2;
bmfh.bfSize = bmfh.bfOffBits + pbmi->bmiHeader.biSizeImage;
HANDLE hFile = CreateFile ("goal.bmp", GENERIC_WRITE, 0, 0, CREATE_ALWAYS, 0, 0);
if (hFile != INVALID_HANDLE_VALUE) {
DWORD dwWritten;
WriteFile (hFile, &bmfh, sizeof (BITMAPFILEHEADER), &dwWritten, NULL);
WriteFile (hFile, pbmi, sizeof (BITMAPINFOHEADER) + sizeof (RGBQUAD) * 2, &dwWritten, NULL);
WriteFile (hFile, pvBits, pbmi->bmiHeader.biSizeImage, &dwWritten, NULL);
CloseHandle (hFile);
}
DeleteObject (hFont);
DeleteObject (hBitmap);
DeleteDC (hDC);
LocalFree (pbmi);
return 0;
}
新手上路1234 2014-04-11
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eeds136 2014-04-11
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图片已经显示在了窗口，就是bmp的格式，我想把显示的图像都统一命名，然后Matlab调用
jacky_qiu 2014-04-11
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//保存位图
int SaveBitmap(HBITMAP hBitmap, LPSTR lpFileName)
{
//lpFileName 为位图文件名
HDC hDC;
//设备描述表
int iBits;
//当前显示分辨率下每个像素所占字节数
WORD wBitCount;
//位图中每个像素所占字节数
//定义调色板大小， 位图中像素字节大小 ， 位图文件大小 ， 写入文件字节数
DWORD dwPaletteSize=0,dwBmBitsSize,dwDIBSize, dwWritten;
BITMAP Bitmap;
//位图属性结构
BITMAPFILEHEADER bmfHdr;
//位图文件头结构
BITMAPINFOHEADER bi;
//位图信息头结构
LPBITMAPINFOHEADER lpbi;
//指向位图信息头结构
HANDLE fh, hDib, hPal;
HPALETTE hOldPal=NULL;
//定义文件，分配内存句柄，调色板句柄
//计算位图文件每个像素所占字节数
iBits=24;
if (iBits <= 1)
wBitCount = 1;
else if (iBits <= 4)
wBitCount = 4;
else if (iBits <= 8)
wBitCount = 8;
else if (iBits <= 32)
wBitCount = 24;
//计算调色板大小
if (wBitCount <= 8)
dwPaletteSize=(1<<wBitCount)*sizeof(RGBQUAD);
//设置位图信息头结构
GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&Bitmap);
bi.biSize = sizeof(BITMAPINFOHEADER);
bi.biWidth = Bitmap.bmWidth;
bi.biHeight =Bitmap.bmHeight;
bi.biPlanes = 1;
bi.biBitCount = wBitCount;
bi.biCompression = BI_RGB;
bi.biSizeImage = 0;
bi.biXPelsPerMeter = 0;
bi.biYPelsPerMeter = 0;
bi.biClrUsed = 0;
bi.biClrImportant = 0;
dwBmBitsSize = ((Bitmap.bmWidth*wBitCount+31)/32)*4*Bitmap.bmHeight;
//为位图内容分配内存
hDib = GlobalAlloc(GHND,dwBmBitsSize+dwPaletteSize+sizeof(BITMAPINFOHEADER));
lpbi = (LPBITMAPINFOHEADER)GlobalLock(hDib);
*lpbi = bi;
// 处理调色板
hPal = GetStockObject(DEFAULT_PALETTE);
if (hPal)
{
hDC = GetDC(NULL);
hOldPal=SelectPalette(hDC,(HPALETTE)hPal,FALSE);
RealizePalette(hDC);
}
// 获取该调色板下新的像素值
GetDIBits(hDC,hBitmap,0,(UINT)Bitmap.bmHeight,(LPSTR)lpbi+sizeof(BITMAPINFOHEADER)+dwPaletteSize, (BITMAPINFO *)lpbi,DIB_RGB_COLORS);
//恢复调色板
if (hOldPal)
{
SelectPalette(hDC, hOldPal, TRUE);
RealizePalette(hDC);
ReleaseDC(NULL, hDC);
}
//创建位图文件
fh=CreateFile(lpFileName, GENERIC_WRITE,0, NULL, CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, NULL);
if (fh==INVALID_HANDLE_VALUE)
return FALSE;
// 设置位图文件头
bmfHdr.bfType = 0x4D42; // "BM"
dwDIBSize=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+dwPaletteSize+dwBmBitsSize;
bmfHdr.bfSize = dwDIBSize;
bmfHdr.bfReserved1 = 0;
bmfHdr.bfReserved2 = 0;
bmfHdr.bfOffBits = (DWORD)sizeof(BITMAPFILEHEADER)+(DWORD)sizeof(BITMAPINFOHEADER)+dwPaletteSize;
// 写入位图文件头
WriteFile(fh, (LPSTR)&bmfHdr, sizeof(BITMAPFILEHEADER), &dwWritten, NULL);
// 写入位图文件其余内容
WriteFile(fh, (LPSTR)lpbi, dwDIBSize,
&dwWritten, NULL);
//清除
GlobalUnlock(hDib);
GlobalFree(hDib);
CloseHandle(fh);
return TRUE;
}
幻夢之葉 2014-04-11
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是bmp的就直接拷贝
不是就按照bmp的文件格式进行存储！
百度百科有 BMP 有文件存储格式
tab_duanjunying 2014-04-11
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如果显示图像的格式就是BMP，而且你已经知道显示图像的文件路径，那你只要拷贝文件和给文件重命名就可以了，为什么还要从显示窗口中抓取然后再存储？
yiyefangzhou24 2014-04-10
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BOOL WINAPI WriteFile(
_In_ HANDLE hFile,
_In_ LPCVOID lpBuffer,
_In_ DWORD nNumberOfBytesToWrite,
_Out_opt_ LPDWORD lpNumberOfBytesWritten,
_Inout_opt_ LPOVERLAPPED lpOverlapped
);
BOOL WINAPI ReadFile(
_In_ HANDLE hFile,
_Out_ LPVOID lpBuffer,
_In_ DWORD nNumberOfBytesToRead,
_Out_opt_ LPDWORD lpNumberOfBytesRead,
_Inout_opt_ LPOVERLAPPED lpOverlapped
);
tab_duanjunying 2014-04-10
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打开了一个图像是什么意思？是已经显示在窗口中了吗？获得文件路径没用，跟你的问题不相干，除非文件就是BMP的，只要图像显示于窗体了，就可以转BMP了
