#include <windows.h>
//関数の宣言
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
ATOM InitApp(HINSTANCE);
BOOL InitInstance(HINSTANCE,int,LPTSTR);
void Create();
void Paint();
void Destroy();
void SetColor(int,int,int);
void DrawLine(int,int,int,int);
void DrawRect(int,int,int,int);
void FillRect(int,int,int,int);
void DrawCircle(int,int,int,int);
void FillCircle(int,int,int,int);
//変数の宣言
HDC hdc; //デバイスコンテキスト
HGDIOBJ hPen; //ペン
HGDIOBJ hBrush;//ブラシ
//メイン
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,
LPWSTR lpCmdLine,int nShowCmd) {
MSG msg;
BOOL bRet;
//ウィンドウの生成
if (!InitApp(hInstance)) return FALSE;
if (!InitInstance(hInstance,nShowCmd,
_T("GraphicsEx"))) return FALSE;
//メインループ
while((bRet=GetMessage(&msg,NULL,0,0))!=0) {
if (bRet==-1) {
break;
} else {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return (int)msg.wParam;
}
//ウィンドウクラスの登録
ATOM InitApp(HINSTANCE hInst) {
WNDCLASSW wc;
wc.style=CS_HREDRAW|CS_VREDRAW;
wc.lpfnWndProc=WndProc;
wc.cbClsExtra=0;
wc.cbWndExtra=0;
wc.hInstance=hInst;
wc.hIcon=NULL;
wc.hCursor=NULL;
wc.hbrBackground=(HBRUSH)COLOR_WINDOW;
wc.lpszMenuName=NULL;
wc.lpszClassName=_T("win01");
return (RegisterClassW(&wc));
}
//ウィンドウの生成
BOOL InitInstance(HINSTANCE hInst,int nShowCmd,
LPTSTR title) {
HWND hWnd;
hWnd=CreateWindowW(_T("win01"),title,
WS_CLIPCHILDREN,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hInst,
NULL);
if (!hWnd) return FALSE;
ShowWindow(hWnd,nShowCmd);
UpdateWindow(hWnd);
return TRUE;
}
//ウィンドウのイベント処理
LRESULT CALLBACK WndProc(HWND hWnd,UINT msg,WPARAM wp,LPARAM lp) {
PAINTSTRUCT ps;
HGDIOBJ hPenOld;
HGDIOBJ hBrushOld;
switch (msg){
//描画
case WM_PAINT:
//前処理
hdc=BeginPaint(hWnd,&ps);
hPen=CreatePen(PS_SOLID,1,RGB(0,0,0));
hPenOld=SelectObject(hdc,hPen);
hBrush=CreateSolidBrush(RGB(0,0,0));
hBrushOld=SelectObject(hdc,hBrush);
//描画
Paint();
//後処理
SelectObject(hdc,hPenOld);
SelectObject(hdc,hBrushOld);
DeleteObject(hPen);
DeleteObject(hBrush);
EndPaint(hWnd,&ps);
break;
//破棄
case WM_DESTROY:
PostQuitMessage(0);
break;
//その他
default:
return (DefWindowProc(hWnd,msg,wp,lp));
}
return 0;
}
//描画
void Paint() {
//ラインの描画
SetColor(255,0,0);
DrawLine(25,5,25,5+40);
//パスの描画
SetColor(255,0,0);
MoveToEx(hdc,55+0,5+0,NULL);
LineTo(hdc,55+30,5+ 5);
LineTo(hdc,55+10,5+20);
LineTo(hdc,55+40,5+25);
LineTo(hdc,55+ 0,5+40);
//矩形の描画
SetColor(0,255,0);
DrawRect(5,55,40,40);
//矩形の塗り潰し
SetColor(0,255,0);
FillRect(55,55,40,40);
//円の描画
SetColor(255,255,0);
DrawCircle(5,100,40,40);
//円の塗り潰し
SetColor(255,255,0);
FillCircle(55,100,40,40);
}
//色の指定
void SetColor(int r,int g,int b) {
//ペンとブラシの解放
DeleteObject(hPen);
DeleteObject(hBrush);
//ペンとブラシの生成
hPen=CreatePen(PS_SOLID,1,RGB(r,g,b));
SelectObject(hdc,hPen);
hBrush=CreateSolidBrush(RGB(r,g,b));
SelectObject(hdc,hBrush);
}
//ラインの描画
void DrawLine(int x0,int y0,int x1,int y1) {
MoveToEx(hdc,x0,y0,NULL);
LineTo(hdc,x1,y1);
}
//矩形の描画
void DrawRect(int x,int y,int w,int h) {
SelectObject(hdc,GetStockObject(NULL_BRUSH));
Rectangle(hdc,x,y,x+w,y+h);
SelectObject(hdc,hBrush);
}
//矩形の塗り潰し
void FillRect(int x,int y,int w,int h) {
Rectangle(hdc,x,y,x+w,y+h);
}
//円の描画
void DrawCircle(int x,int y,int w,int h) {
SelectObject(hdc,GetStockObject(NULL_BRUSH));
Ellipse(hdc,x,y,x+w,y+h);
SelectObject(hdc,hBrush);
}
//円の塗り潰し
void FillCircle(int x,int y,int w,int h) {
Ellipse(hdc,x,y,x+w,y+h);
} |