帮忙看个VC程序
#include "GDISurface.h"
#include "GDIGraphicsDevice.h"
CGDISurface::CGDISurface()
{
m_iWidth = 0;
m_iHeight = 0;
m_hBitmap = NULL;
m_hMaskBitmap = NULL;
m_hOldBitmap = NULL;
m_hOldMaskBitmap = NULL;
m_hDC = NULL;
m_hMaskDC = NULL;
}
CGDISurface::~CGDISurface()
{
}
bool CGDISurface::Create( CGDIGraphicsDevice *pDevice, int iWidth, int iHeight )
{
// 获得主窗口绘图设备句柄
HWND hWnd = pDevice->GetWnd();
HDC hdcWindow = ::GetDC( hWnd );
// 创建图形设备句柄
m_hDC = ::CreateCompatibleDC( hdcWindow );
m_hMaskDC = ::CreateCompatibleDC( hdcWindow );
// 创建位图和透明位图
m_hBitmap = ::CreateCompatibleBitmap( hdcWindow, iWidth, iHeight );
m_hMaskBitmap = ::CreateBitmap( iWidth, iHeight, 1, 1, NULL );
// 关联设备和位图句柄
m_hOldBitmap = (HBITMAP)::SelectObject( m_hDC, m_hBitmap );
m_hOldMaskBitmap = (HBITMAP)::SelectObject( m_hMaskDC, m_hMaskBitmap );
// 制作透明通道位图
::SetBkColor( m_hDC, RGB(0,0,255) );
::BitBlt( m_hMaskDC, 0, 0, iWidth, iHeight, m_hDC, 0, 0, SRCCOPY );
::SetBkColor( m_hDC, RGB(0,0,0) );
::SetTextColor( m_hDC, RGB(255,255,255) );
::BitBlt( m_hDC, 0, 0, iWidth, iHeight, m_hMaskDC, 0, 0, SRCAND );
// 释放主窗口绘图句柄
::ReleaseDC( hWnd, hdcWindow );
// 保存表面大小
m_iWidth = iWidth;
m_iHeight = iHeight;
return true;
}
//实现从文件读取位图， 方法和创建位图类似，只是原位图从文件用LoadImage读入。
// 从文件读取一个位图
bool CGDISurface::LoadBmp( CGDIGraphicsDevice *pDevice, const char *szFileName )
{
FILE *fp =fopen( szFileName, "rb" );// 读取位图文件信息，确定位图大小
if( NULL == fp )
{
OutputDebugString( FSTR( "Open bmp file [%s] failed(%s:%d)", szFileName, __FILE__, __LINE__ ) );
return false;
}
BITMAPFILEHEADER bmfh;
BITMAPINFOHEADER bmih;
fread( &bmfh, sizeof(BITMAPFILEHEADER), 1, fp );
fread( &bmih, sizeof(BITMAPINFOHEADER), 1, fp );
fclose(fp);
// 如果不是位图则返回失败
if( bmfh.bfType != 0x4D42 )
{
OutputDebugString( FSTR( "the bmp file [%s] type is failed(%s:%d)", szFileName, __FILE__, __LINE__ ) );
return false;
}
HBITMAP hBmp = (HBITMAP)::LoadImage(NULL, szFileName, IMAGE_BITMAP, bmih.biWidth, bmih.biHeight, LR_LOADFROMFILE | LR_CREATEDIBSECTION );
m_iWidth = bmih.biWidth;
m_iHeight = bmih.biHeight;
HWND hWnd = pDevice->GetWnd();
HDC hdcWindow = ::GetDC( hWnd );
m_hBitmap = ::CreateCompatibleBitmap( hdcWindow, m_iWidth, m_iHeight );
m_hMaskBitmap = ::CreateBitmap( m_iWidth, m_iHeight, 1, 1, NULL );
HDC hTempDC = ::CreateCompatibleDC( hdcWindow );
m_hDC = ::CreateCompatibleDC( hdcWindow );
m_hMaskDC = ::CreateCompatibleDC( hdcWindow );
HBITMAP hOldBitmap = (HBITMAP)::SelectObject( hTempDC, hBmp );
m_hOldBitmap = (HBITMAP)::SelectObject( m_hDC, m_hBitmap );
m_hOldMaskBitmap = (HBITMAP)::SelectObject( m_hMaskDC, m_hMaskBitmap );
::BitBlt( m_hDC, 0, 0, m_iWidth, m_iHeight, hTempDC, 0, 0, SRCCOPY );
::SetBkColor( m_hDC, RGB(0,0,255) );
::BitBlt( m_hMaskDC, 0, 0, m_iWidth, m_iHeight, m_hDC, 0, 0, SRCCOPY );
::SetBkColor( m_hDC, RGB(0,0,0) );
::SetTextColor( m_hDC, RGB(255,255,255) );
::BitBlt( m_hDC, 0, 0, m_iWidth, m_iHeight, m_hMaskDC, 0, 0, SRCAND );
::SelectObject( hTempDC, hOldBitmap );
DeleteDC( hTempDC );
DeleteObject( hBmp );
::ReleaseDC( hWnd, hdcWindow );
return true;
}
//实现释放位图
// 释放位图
void CGDISurface::Release()
{
::SelectObject( m_hDC, m_hOldBitmap );
::SelectObject( m_hMaskDC, m_hOldMaskBitmap );
::DeleteDC( m_hMaskDC );
::DeleteDC( m_hDC );
::DeleteObject( m_hBitmap );
::DeleteObject( m_hMaskBitmap );
}
//实现4个基本绘图操作
// 清除表面为 某种颜色
void CGDISurface::Clear( COLORREF c )
{
// 创建填充画笔
HBRUSH hBrush = CreateSolidBrush( c );
// 填充整个表面
RECT rect = { 0, 0, m_iWidth, m_iHeight };
FillRect( m_hDC, &rect, hBrush );
// 释放画笔
DeleteObject( hBrush );
}
// 画店
void CGDISurface::SetPixel( int x, int y, COLORREF c )
{
::SetPixel( m_hDC, x, y, c );
}
// 画线
void CGDISurface::Line( int x1, int y1, int x2, int y2, COLORREF c )
{
HPEN hPen = CreatePen(PS_SOLID, 1, c );
HPEN hOldPen = (HPEN)SelectObject( m_hDC, hPen );
MoveToEx( m_hDC, x1, y1, (LPPOINT) NULL );
LineTo( m_hDC, x2, y2 );
SelectObject( m_hDC, hOldPen );
DeleteObject( hPen );
}
// 画矩形
void CGDISurface::Rect( int x1, int y1, int x2, int y2, COLORREF c )
{
// 画4条线 矩形边框
Line( x1, y1, x2, y1, c );
Line( x1, y2, x2, y2, c );
Line( x1, y1, x1, y2, c );
Line( x2, y1, x2, y2, c );
}
//实现位图传送功能
// 位图传送
void CGDISurface::Blt( CGDISurface *pSurface, int x, int y, int rx, int ry, int w, int h, SurfaceBltMode iMode )
{
HDC hdcDst = pSurface->GetDC();
switch( iMode )
{
case BLT_BLOCK:
// 基本复制方式传送位图
BitBlt( hdcDst, x, y, w, h, m_hDC, rx, ry, SRCCOPY );
break;
case BLT_ALPHATEST:
// 带透明色方式传送位图
SetBkColor( hdcDst, RGB(255,255,255) );
SetTextColor( hdcDst, RGB(0,0,0) );
BitBlt( hdcDst, x, y, w, h, m_hMaskDC, rx, ry, SRCAND );
BitBlt( hdcDst, x, y, w, h, m_hDC, rx, ry, SRCPAINT );
break;
case BLT_ALPHABLEND:
break;
}
}
在头文件中已经包含了对WINDOWS。H的引用。
这个程序在连接的时候出现7个错误，全部是关于文件操作的错误。例如 FILE ,fopen,fclose等。系统说没有对这些常量和函数进行定义。
大家帮忙看看，谢谢。
