www.pudn.com > DualDisplay.rar > gx.h

 
// The following ifdef block is the standard way of creating macros which make exporting  
// from a DLL simpler. All files within this DLL are compiled with the GXDLL_EXPORTS 
// symbol defined on the command line. this symbol should not be defined on any project 
// that uses this DLL. This way any other project whose source files include this file see  
// GXDLL_API functions as being imported from a DLL, wheras this DLL sees symbols 
// defined with this macro as being exported. 
 
#ifdef GXDLL_EXPORTS 
#define GXDLL_API __declspec(dllexport) 
#else 
#define GXDLL_API __declspec(dllimport) 
#endif 
 
struct GXDisplayProperties { 
	DWORD cxWidth; 
	DWORD cyHeight;			// notice lack of 'th' in the word height. 
	long cbxPitch;			// number of bytes to move right one x pixel - can be negative. 
	long cbyPitch;			// number of bytes to move down one y pixel - can be negative. 
	long cBPP;				// # of bits in each pixel 
	DWORD ffFormat;			// format flags. 
}; 
 
struct GXKeyList { 
	short vkUp;				// key for up 
	POINT ptUp;				// x,y position of key/button.  Not on screen but in screen coordinates. 
	short vkDown; 
	POINT ptDown; 
	short vkLeft; 
	POINT ptLeft; 
	short vkRight; 
	POINT ptRight; 
	short vkA; 
	POINT ptA; 
	short vkB; 
	POINT ptB; 
	short vkC; 
	POINT ptC; 
	short vkStart; 
	POINT ptStart; 
}; 
 
struct GXScreenRect { 
	DWORD dwTop; 
	DWORD dwLeft; 
	DWORD dwWidth; 
	DWORD dwHeight; 
}; 
 
GXDLL_API int GXOpenDisplay(HWND hWnd, DWORD dwFlags); 
GXDLL_API int GXCloseDisplay(); 
GXDLL_API void * GXBeginDraw(); 
GXDLL_API int GXEndDraw(); 
GXDLL_API int GXOpenInput(); 
GXDLL_API int GXCloseInput(); 
GXDLL_API GXDisplayProperties GXGetDisplayProperties(); 
GXDLL_API GXKeyList GXGetDefaultKeys(int iOptions); 
GXDLL_API int GXSuspend(); 
GXDLL_API int GXResume(); 
GXDLL_API int GXSetViewport( DWORD dwTop, DWORD dwHeight, DWORD dwReserved1, DWORD dwReserved2 ); 
GXDLL_API BOOL GXIsDisplayDRAMBuffer(); 
 
 
// Although these flags can be unrelated they still 
// have unique values. 
 
#define GX_FULLSCREEN	0x01		// for OpenDisplay() 
#define GX_NORMALKEYS	0x02 
#define GX_LANDSCAPEKEYS	0x03 
 
#ifndef kfLandscape 
	#define kfLandscape	0x8			// Screen is rotated 270 degrees 
	#define kfPalette	0x10		// Pixel values are indexes into a palette 
	#define kfDirect	0x20		// Pixel values contain actual level information 
	#define kfDirect555	0x40		// 5 bits each for red, green and blue values in a pixel. 
	#define kfDirect565	0x80		// 5 red bits, 6 green bits and 5 blue bits per pixel 
	#define kfDirect888	0x100		// 8 bits each for red, green and blue values in a pixel. 
	#define kfDirect444	0x200		// 4 red, 4 green, 4 blue 
	#define kfDirectInverted 0x400 
#endif