#include <windows.h> //include windows header for some function like MessageBox, creating the window.
#include "d3dx9.h" //include a directx header
#include <stdio.h> //for the sprinf_s function used by DrawString
#pragma comment(lib, "d3dx9.lib") //link the library
#pragma comment(lib, "d3d9.lib") //link the library
#define Emsg(msg){MessageBox(NULL,msg,"Error",MB_OK|MB_ICONEXCLAMATION);} //macro for error pop-up
int WINDOW_WIDTH = 1024; //window width
int WINDOW_HEIGHT = 768; //window height
bool windowed = true; //window mode, change to false for full screen
IDirect3D9 *pD3D; //global variable that will be used by a couple of our function
IDirect3DDevice9 *pDevice; //a device that will be used for most of our function created inside *pD3D
LPD3DXFONT pFont; //font variable to use with our create font function and to display text after
int textx = 482; //text x coord
int texty = 378; //text y coord
LRESULT CALLBACK wndProc(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam) //callback function for our GetMessage function on the while statement inside the main function
{
switch(uMsg) //switch the MSG variable passed
{
case WM_CLOSE: //case it's a Window Close MSG
PostQuitMessage(0); //Apply a Quit Message
break;
}
return DefWindowProc(hWnd,uMsg,wParam,lParam); //pass the variable
}
HRESULT initialize() //funciton where all the initialization stuff go
{ //change the parameter (LPCSTR)"Arial" to any other font name in your font folder to test other font
if(FAILED(D3DXCreateFont(pDevice, 15, 0, FW_BOLD, 1, 0, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH | FF_DONTCARE, (LPCSTR)"Arial", &pFont))) //create a font in our Device with the pFont variable
{
Emsg("Failed to create the font"); //error pop-up for debug purpose
return E_FAIL; //return it failed
}
}
void DrawString(int x, int y, DWORD color, LPD3DXFONT g_pFont, const char *fmt) //function to draw text won't go in detail in this tutorial
{
RECT FontPos = { x, y, x + 120, y + 16 };
char buf[1024] = {'\0'};
va_list va_alist;
va_start(va_alist, fmt);
vsprintf_s(buf, fmt, va_alist);
va_end(va_alist);
g_pFont->DrawText(NULL, buf, -1, &FontPos, DT_NOCLIP, color);
}
HRESULT render() //function where all Drawing/Render stuff go
{
if(SUCCEEDED(pDevice->BeginScene())) //Call the BeginScene function with our Device and see if it succeeded, all drawing/render code go behind BeginScene and EndScene
{ //first parameter is the x coord of the text we use our global variable textx, second parameter is samething but with y, last parameter is the text to draw in this case Hello World
DrawString(textx, texty, D3DCOLOR_ARGB(255, 0, 255, 0), pFont, "Hello World"); //if it did draw Hello world on buffer, D3DCOLOR_ARGB(255, 0, 255, 0) is the color the first parametter is the alpha (transparent),rest is Red Blue Green the total of red blue green must be 255 maximum
pDevice->EndScene(); //Call the EndScene function with our Device
return S_OK; //return it succeeded
}
return E_FAIL; //return it failed
}
void CleanUp() //function to delete/release things to prevent memory leak
{
if(pD3D) //check if pD3D ism't released
pD3D->Release(); //release it
if(pDevice) //check if pDevice ism't released
pDevice->Release(); //release it
if(pFont) //check if pFont ism't released
pFont->Release(); //release it
}
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nShowCmd) //our main function the first function called of the program
{
WNDCLASSEX wc; //window class won't go in detail not related to this tutorial really
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
wc.lpfnWndProc = (WNDPROC)wndProc;
wc.cbWndExtra = 0;
wc.cbClsExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDI_WINLOGO);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = NULL;
wc.lpszMenuName = NULL;
wc.lpszClassName = "D3DTEST"; //class name
wc.hIconSm = LoadIcon(NULL, IDI_WINLOGO);
RECT rect; //window rectangle
rect.top = (long)0;
rect.left = (long)0;
rect.right = WINDOW_WIDTH; //use our global WINDOW_WIDTH variable
rect.bottom = WINDOW_HEIGHT; //use our global WINDOW_HEIGHT variable
if(!RegisterClassEx(&wc)) //register the window cs
{
Emsg("Could not register window class"); //error pop-up for debug purpose
return 1; //return error
}
AdjustWindowRectEx(&rect,WS_OVERLAPPEDWINDOW,false,WS_EX_APPWINDOW | WS_EX_WINDOWEDGE); //set the window width and height with the rect above
//the D3DTEST must match the class name of the window class and D3D TEST is the window name
HWND hWindow = CreateWindowEx(NULL,"D3DTEST","D3D TEST",WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_OVERLAPPEDWINDOW,0,0,rect.right-rect.left,rect.bottom-rect.top,NULL,NULL,hInstance,NULL); //create the window
if(!hWindow) //if the window failed to create
{
DestroyWindow(hWindow); //destroy the window
UnregisterClass("D3DTEST",hInstance); //unregister our window class
Emsg("Failed to create the window"); //error pop-up for debug purpose
return 1; //return error
}
ShowWindow(hWindow,SW_SHOW); //show our window
UpdateWindow(hWindow); //update our window
SetForegroundWindow(hWindow); //set our window on top
SetFocus(hWindow); //set the focus on our window
D3DPRESENT_PARAMETERS d3dpp; //the presentation parameters that will be used when we will create the device
ZeroMemory(&d3dpp,sizeof(d3dpp)); //to be sure d3dpp is empty
d3dpp.Windowed = windowed; //use our global windowed variable to tell if the program is windowed or not
d3dpp.hDeviceWindow = hWindow; //give the window handle of the window we created above
d3dpp.BackBufferCount = 1; //set it to only use 1 backbuffer
d3dpp.BackBufferWidth = WINDOW_WIDTH; //set the buffer to our window width
d3dpp.BackBufferHeight = WINDOW_HEIGHT; //set the buffer to out window height
d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8; //the backbuffer format
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; //SwapEffect
pD3D = Direct3DCreate9(D3D_SDK_VERSION); //Create the presentation parameters
if(FAILED(pD3D->CreateDevice(D3DADAPTER_DEFAULT,D3DDEVTYPE_HAL,hWindow,D3DCREATE_SOFTWARE_VERTEXPROCESSING,&d3dpp,&pDevice))) //create the device and check if it failed
{
Emsg("Failed to create device"); //error pop-up for debug purpose
CleanUp(); //call your CleanUp() function to prevent memory leak
return 1; //exit the program return 1 error
}
if(FAILED(initialize())) //call the initialize function and check if it failed
{
Emsg("Failed to initialize"); //error pop-up for debug purpose
CleanUp(); //call your CleanUp() function to prevent memory leak
return 1; //exit the program return 1 error
}
MSG msg; //declare a MSG local variable for the GetMessage of the while loop
while(GetMessage(&msg,NULL,0,0)) //GetMessage reffer to the wndProc() function
{
pDevice->Clear(0,0,D3DCLEAR_TARGET,D3DCOLOR_XRGB(0,0,0),1.0f,0.0f); //Clear the screen with black, basically since we only draw text here it's like your background change the D3DCOLOR_XRGB(0,0,0) to change the color the 3 number additioned must make 255 maximum
if(FAILED(render())) //call the function render() and verify if it worked
{
Emsg("Render failed"); //error pop-up for debug purpose
}
pDevice->Present(NULL,NULL,NULL,NULL); //display your buffer on screen
TranslateMessage(&msg); //translate the msg of the GetMessage of your while loop
DispatchMessage(&msg); //dispath the msg of the GetMessage of your while loop
}
CleanUp(); //call your CleanUp() function to prevent memory leak
return 0; //return 0 no problem
}