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| #include<windows.h>
#include<gl\gl.h>
#include<gl\glu.h>
#include<gl\glaux.h>
HGLRC hRC=NULL;
HDC hDC=NULL;
HWND hWnd=NULL;
HINSTANCE hInstance=NULL;
bool keys[256];
bool active=true;
bool fullscreen=true;
LRESULT CALLBACK WndProc(HINSTANCE,UINT,WPARAM,LPARAM);
GLvoid ReSizeGLScene(GLsizei width,GLsizei height){
if(height==0)
height=1;
glViewport(0,0,width,height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
int InitGL(){
glShadeModel(GL_SMOOTH);
glClearColor(0.0f,0.0f,0.0f,0.0f);
glClearDepth(1.0f);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glHint(GL_PERSPECTIVE_CORRECTION_HINT,GL_NICEST);
return true;
}
int DrawGLScene(){
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); // Очистить экран и буфер глубины
glLoadIdentity(); // Сбросить текущую матрицу
return true;
}
GLvoid KillGLWindow(){
if (fullscreen){
ChangeDisplaySettings(NULL,0);
ShowCursor(true);
}
if(hRC){
if(!wglMakeCurrent(NULL,NULL))
MessageBox(NULL,L"Release DC and RC failed",L"SHUTDOWN ERROR",
MB_OK|MB_ICONINFORMATION);
if(!wglDeleteContext(hRC))
MessageBox(NULL,L"Release Rendering Context failed",L"SHUTDOWN ERROR",
MB_OK|MB_ICONINFORMATION);
hRC=NULL;
}
if(hDC&&!ReleaseDC(hWnd,hDC)){
MessageBox(NULL,L"Release Device Context failed",L"SHUTDOWN ERROR",
MB_OK|MB_ICONINFORMATION);
hDC=NULL;
}
if(hWnd&&!DestroyWindow(hWnd)){
MessageBox(NULL,L"Could not close hWnd",L"SHUTDOWN ERROR",
MB_OK|MB_ICONINFORMATION);
hWnd=NULL;
}
if(!UnregisterClass(L"OpenGL",hInstance)){
MessageBox(NULL,L"Could not unregister class",L"SHUTDOWN ERROR",
MB_OK|MB_ICONINFORMATION);
hInstance=NULL;
}
}
BOOL CreateGLWindow(LPCWSTR title,int width,int height,int bits,bool fullscreenflag){
GLuint PixelFormat;
WNDCLASS wc;
DWORD dwExStyle;
DWORD dwStyle;
RECT WindowRect;
WindowRect.left=0;
WindowRect.top=0;
WindowRect.right=width;
WindowRect.bottom=height;
fullscreen=fullscreenflag;
hInstance=GetModuleHandle(NULL);
wc.style=CS_HREDRAW|CS_VREDRAW|CS_OWNDC;
wc.lpfnWndProc=(WNDPROC)WndProc;
wc.cbClsExtra=0;
wc.cbWndExtra=0;
wc.hInstance=hInstance;
wc.hIcon=LoadIcon(NULL,IDI_WINLOGO);
wc.hCursor=LoadCursor(NULL,IDC_ARROW);
wc.hbrBackground=NULL;
wc.lpszMenuName=NULL;
wc.lpszClassName=L"OpenGL";
if(!RegisterClass(&wc)){
MessageBox(NULL,L"Failed to Register Window Class",L"SHUTDOWN ERROR",
MB_OK|MB_ICONEXCLAMATION);
return false;
}
if(fullscreen){
DEVMODE dmScreenSettings;
memset(&dmScreenSettings,0,sizeof(dmScreenSettings));
dmScreenSettings.dmBitsPerPel=bits;
dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;
dmScreenSettings.dmPelsWidth=width;
dmScreenSettings.dmPelsHeight=height;
dmScreenSettings.dmSize=sizeof(dmScreenSettings);
if(ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN)!=
DISP_CHANGE_SUCCESSFUL)
{
if(MessageBox( NULL,
L"The Requested Fullscreen Mode Is Not Supported By\nYourVideo Card. Use Windowed Mode Instead?",
L"Open GL", MB_YESNO | MB_ICONEXCLAMATION) == IDYES )
fullscreen=false;
else
return false;
if(fullscreen){
dwExStyle=WS_EX_APPWINDOW;
dwStyle=WS_POPUP;
ShowCursor(false);
}else
{
dwExStyle=WS_EX_APPWINDOW|WS_EX_WINDOWEDGE;
dwStyle=WS_OVERLAPPEDWINDOW;
}
}
}
AdjustWindowRectEx(&WindowRect,dwStyle,0,dwExStyle);
if(!(hWnd=CreateWindowEx(dwExStyle,
L"OpenGL",title,
WS_CLIPSIBLINGS|
WS_CLIPCHILDREN|dwStyle,
0,0,
WindowRect.right-WindowRect.left,
WindowRect.bottom-WindowRect.top,
NULL,NULL,hInstance,NULL))){
KillGLWindow();
MessageBox(NULL,L"Window Creation error",L"Error",MB_OK|MB_ICONEXCLAMATION);
return false;
}
static PIXELFORMATDESCRIPTOR pfd={
sizeof(PIXELFORMATDESCRIPTOR),
1,
PFD_DRAW_TO_WINDOW|
PFD_SUPPORT_OPENGL|
PFD_DOUBLEBUFFER,
PFD_TYPE_RGBA,
bits,
0,0,0,0,0,0,
0,
0,
0,
0,0,0,0,
32,
0,
0,
PFD_MAIN_PLANE,
0,
0,0,0
};
if(!(hDC=GetDC(hWnd))){
KillGLWindow();
MessageBox( NULL, L"Can't Create A GL Device Context.", L"ERROR", MB_OK | MB_ICONEXCLAMATION );
return false;
}
if(!(PixelFormat=ChoosePixelFormat(hDC,&pfd))){
KillGLWindow();
MessageBox( NULL, L"Can't Set The PixelFormat.", L"ERROR", MB_OK | MB_ICONEXCLAMATION );
return false;
}
if(!SetPixelFormat(hDC,PixelFormat,&pfd)){
KillGLWindow();
MessageBox( NULL, L"Can't Set The PixelFormat.", L"ERROR", MB_OK | MB_ICONEXCLAMATION );
return false;
}
if(!(hRC=wglCreateContext(hDC))){
KillGLWindow();
MessageBox( NULL, L"Can't Set The PixelFormat.", L"ERROR", MB_OK | MB_ICONEXCLAMATION );
return false;
}
if(!wglMakeCurrent(hDC,hRC)){
KillGLWindow();
MessageBox( NULL, L"Can't Activate The GL Rendering Context.", L"ERROR", MB_OK | MB_ICONEXCLAMATION );
return false;
}
ShowWindow(hWnd,SW_SHOW);
SetForegroundWindow(hWnd);
SetFocus(hWnd);
ReSizeGLScene(width,height);
if(!InitGL()){
KillGLWindow();
MessageBox( NULL, L"Initialization Failed.", L"ERROR", MB_OK | MB_ICONEXCLAMATION );
return false;
}
return true;
}
LRESULT CALLBACK WndProc(HINSTANCE hInstance,UINT uMsg,WPARAM wParam,LPARAM lParam){
switch(uMsg){
case WM_ACTIVATE:
if(!HIWORD(wParam))
active=true;
else
active=false;
break;
case WM_SYSCOMMAND:
switch(wParam){
case SC_SCREENSAVE:
case SC_MONITORPOWER:
return 0;
}
break;
case WM_CLOSE:
PostQuitMessage(0);
break;
case WM_KEYDOWN:
keys[wParam]=true;
break;
case WM_KEYUP:
keys[wParam]=false;
break;
case WM_SIZE:
ReSizeGLScene(LOWORD(lParam),HIWORD(lParam));
break;
default:
DefWindowProc(hWnd,uMsg,wParam,lParam);
}
return 0;
}
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nShowCmd){
MSG msg;
bool done=false;
if( MessageBox( NULL, L"Хотите ли Вы запустить приложение в полноэкранном режиме?",
L"Запустить в полноэкранном режиме?", MB_YESNO | MB_ICONQUESTION) == IDNO )
{
fullscreen = false; // Оконный режим
}
if( !CreateGLWindow( L"NeHe OpenGL окно", 1024, 768, 32, fullscreen ) )
{
return 0; // Выйти, если окно не может быть создано
}
while(!done){
if(PeekMessage(&msg,hWnd,0,0,PM_REMOVE)){
if(msg.message==WM_QUIT){
done=true;
}else
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}else
{
if(active){
if(keys[VK_ESCAPE])
done=true;
else{
DrawGLScene();
SwapBuffers(hDC);
}
}
if(keys[VK_F1]){
keys[VK_F1]=false;
KillGLWindow();
fullscreen=!fullscreen;
if( !CreateGLWindow( L"NeHe OpenGL структура", 1024, 768, 32, fullscreen ) )
{
return 0;
}
}
}
}
KillGLWindow();
return (msg.lParam);
} |
(
Сообщение от DenCHS200
