Fill something in!

Wachar · 2002-04-25T21:41:41

I have drawn a triangle and now, I''m trying to fill it in with a brush. How to do it? #define WIN32_LEAN_AND_MEAN #include <windows.h> LRESULT CALLBACK WindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) { PAINTSTRUCT ps; HDC hdc; switch(msg) { case WM_CREATE: { return(0); } break; case WM_PAINT: { hdc = BeginPaint(hwnd, &ps); EndPaint(hwnd, &ps); return(0); } break; case WM_DESTROY: { PostQuitMessage(0); return(0); } break; default:break; } return(DefWindowProc(hwnd, msg, wparam, lparam)); } int WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hprevinstance, LPSTR lpcmdline, int nshowcmd) { WNDCLASSEX winclass; HWND hwnd; MSG msg; HDC hdc; winclass.cbSize = sizeof(WNDCLASSEX); winclass.style = CS_DBLCLKS | CS_OWNDC | CS_HREDRAW | CS_VREDRAW; winclass.lpfnWndProc = WindowProc; winclass.cbClsExtra = 0; winclass.cbWndExtra = 0; winclass.hInstance = hinstance; winclass.hIcon = LoadIcon(NULL, IDI_APPLICATION); winclass.hCursor = LoadCursor(NULL, IDC_ARROW); winclass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH); winclass.lpszMenuName = NULL; winclass.lpszClassName = "WINCLASS1"; winclass.hIconSm = LoadIcon(NULL, IDI_APPLICATION); if(!RegisterClassEx(&winclass)) return(0); if(!(hwnd = CreateWindowEx(NULL, "WINCLASS1", "My Awesome Window!", WS_OVERLAPPEDWINDOW | WS_VISIBLE, 0,0, 400,400, NULL, NULL, hinstance, NULL))) return(0); while(1) { if(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) { if(msg.message == WM_QUIT) break; TranslateMessage(&msg); DispatchMessage(&msg); } hdc = GetDC(hwnd); //Create the white pen and the old pen for later storage. HPEN white_pen = CreatePen(PS_SOLID, 1, RGB(255,255,255)); HPEN old_pen = (HPEN)SelectObject(hdc, white_pen); // Does not work!! //Create a brush HBRUSH white_brush = CreateSolidBrush(RGB(255,255,255)); HBRUSH first_brush = (HBRUSH)SelectObject(hdc, white_brush); //Get ready to draw the triangle MoveToEx(hdc, 20, 20, NULL); //Draw the triangle LineTo(hdc, 70, 90); LineTo(hdc, 110,20); LineTo(hdc, 20, 20); //WHERE TO USE THE BRUSH!!?? //Get ready to destroy the white pen SelectObject(hdc, old_pen); //Destroy the pens and brushes!!! DeleteObject(white_pen); //Let go of the Device Context ReleaseDC(hwnd, hdc); }//while loop return(msg.wParam); }//winmain ---------- Windows is superior to Macs!!! ----------

For Beginners

Started by Wachar April 23, 2002 06:09 PM

24 comments, last by Wachar 22 years, 8 months ago

Colin Jeanne

1,115

April 24, 2002 08:11 PM

Blinking? Maybe it''s tearing.

Instead of drawing it each frame, draw it when the WM_PAINT message is called.

I will not make a list of links... I will not make a list of links... I will not make a list of links...
Invader''s Realm

Wachar

Author

127

April 24, 2002 08:28 PM

The code is in my other post "FPS". When I use a fps while statement, it doesn''t "blink". But, when I don''t, it does!

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Take it to the Xtreme!
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Wachar's Eternity <-<-<-<-<- Me own site!

Colin Jeanne

1,115

April 24, 2002 09:23 PM

Then the problem is probably tearing. Have you moved your drawing code over to be draw when WM_PAINT is received?

I will not make a list of links... I will not make a list of links... I will not make a list of links...
Invader''s Realm

Wachar

Author

127

April 25, 2002 08:33 AM

Uh...what?!

----------
Take it to the Xtreme!
----------

Wachar's Eternity <-<-<-<-<- Me own site!

Colin Jeanne

1,115

April 25, 2002 05:31 PM

The reason your drawing is tearing is because you are drawing it a lot more than it needs to be.

The WM_PAINT message is sent when a window NEEDS to be redrawn (which is quite a bit less than how often your code draws the polygon). If you draw the shape only when you HAVE to then you are less likely to be getting the tearing affect.

So, only draw the shape when the window receives the WM_PAINT message.

I will not make a list of links... I will not make a list of links... I will not make a list of links...
Invader''s Realm

Wachar

Author

127

April 25, 2002 09:41 PM

Oh, thanks!

----------
Take it to the Xtreme!
----------

Wachar's Eternity <-<-<-<-<- Me own site!

Fill something in!

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