Ich weiß aber leider nicht wie dieser Effekt heisst... koenntet ihr mir ein paar Stichwörter oder sogar Tuts geben?

Gruß Tobi.

Gruß Tobi.

http://msdn2.microsoft.com/en-us/library/ms532348.aspx

#pragma comment(lib, "msimg32.lib")

#include <windows.h>

LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	switch (msg)
	{
	case WM_CLOSE:
		{
			DestroyWindow(hWnd);
			return 0;
		} break;
	case WM_DESTROY:
		{
			PostQuitMessage(0);
			return 0;
		} break;
	case WM_PAINT:
		{
			RECT client;
			GetClientRect(hWnd, &client);
			client.bottom -= client.top;
			client.right -= client.left;
			TRIVERTEX        vert [4] ;
			GRADIENT_TRIANGLE    gTri[2];
			vert [0] .x       =  0;
			vert [0] .y       =  0;
			vert [0] .Red     =  0x0000;
			vert [0] .Green   =  0x0000;
			vert [0] .Blue    =  0xFF00;
			vert [0] .Alpha   =  0x0000;

			vert [1] .x       =  client.right;
			vert [1] .y       =  0;
			vert [1] .Red     =  0x7F80;
			vert [1] .Green   =  0x7F80;
			vert [1] .Blue    =  0xFF00;
			vert [1] .Alpha   =  0x0000;

			vert [2] .x       =  client.right;
			vert [2] .y       =  client.bottom; 
			vert [2] .Red     =  0xFF00;
			vert [2] .Green   =  0xFF00;
			vert [2] .Blue    =  0xFF00;
			vert [2] .Alpha   =  0x0000;

			vert [3] .x       =  0;
			vert [3] .y       =  client.bottom;
			vert [3] .Red     =  0x7F80;
			vert [3] .Green   =  0x7F80;
			vert [3] .Blue    =  0xFF00;
			vert [3] .Alpha   =  0x0000;

			gTri[0].Vertex1   = 0;
			gTri[0].Vertex2   = 1;
			gTri[0].Vertex3   = 2;

			gTri[1].Vertex1   = 0;
			gTri[1].Vertex2   = 2;
			gTri[1].Vertex3   = 3;

			PAINTSTRUCT ps;
			HDC hDC = BeginPaint(hWnd, &ps);
			GradientFill(hDC, vert, 4, gTri, 2, GRADIENT_FILL_TRIANGLE);
			EndPaint(hWnd, &ps);
			return 0;
		} break;
	}
	return DefWindowProc(hWnd, msg, wParam, lParam);
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR szCmdLine, int iCmdShow)
{
	WNDCLASS wc;
	wc.cbClsExtra = 0;
	wc.cbWndExtra = 0;
	wc.hbrBackground = reinterpret_cast<HBRUSH>(GetStockObject(WHITE_BRUSH));
	wc.hCursor = LoadCursor(NULL, IDC_ARROW);
	wc.hIcon = LoadIcon(NULL, IDI_WINLOGO);
	wc.hInstance = hInstance;
	wc.lpfnWndProc = WndProc;
	wc.lpszClassName = L"Gradient Window";
	wc.lpszMenuName = NULL;
	wc.style = CS_HREDRAW|CS_VREDRAW;
	RegisterClass(&wc);
	HWND hWnd = CreateWindowEx(0, L"Gradient Window", L"Gradient", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL);
	if (!hWnd)
		return -1;
	ShowWindow(hWnd, SW_SHOW);
	MSG msg;
	while (GetMessage(&msg, NULL, 0, 0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return static_cast<int>(msg.wParam);
}

#pragma comment(lib, "msimg32.lib")

#include <windows.h>

BOOL CALLBACK ChildEnumProc(HWND hWnd, LPARAM lParam)
{
	InvalidateRect(hWnd, NULL, TRUE);
	return TRUE;
}

HDC BeginScene(HWND hWnd, HBITMAP* pBitmap)
{
	RECT r = { 0 };
	GetClientRect(hWnd, &r);
	r.right -= r.left;
	r.bottom -= r.top;
	HDC hWindowDC = GetDC(hWnd);
	HDC hDoubleBufferDC = CreateCompatibleDC(hWindowDC);
	*pBitmap = CreateCompatibleBitmap(hWindowDC, r.right, r.bottom);
	SelectObject(hDoubleBufferDC, (*pBitmap));
	ReleaseDC(hWnd, hWindowDC);
	wchar_t szClassName[1024];
	GetClassName(hWnd, szClassName, 1024);
	WNDCLASSEX wce = { 0 };
	GetClassInfoEx(GetModuleHandle(NULL), szClassName, &wce);
	FillRect(hDoubleBufferDC, &r, wce.hbrBackground);
	return hDoubleBufferDC;
}

void EndScene(HWND hWnd, HDC hDoubleBufferDC, HBITMAP hBitmap)
{
	RECT r = { 0 };
	GetUpdateRect(hWnd, &r, FALSE);
	if ((r.bottom == 0) && (r.left == 0) && (r.right == 0) && (r.top == 0))
		GetClientRect(hWnd, &r);
	PAINTSTRUCT ps = { 0 };
	HDC hWindowDC = BeginPaint(hWnd, &ps);
	StretchBlt(hWindowDC, r.left, r.top, r.right, r.bottom, hDoubleBufferDC, r.left, r.top, r.right, r.bottom, SRCCOPY);
	EndPaint(hWnd, &ps);
	DeleteObject(hBitmap);
	DeleteDC(hDoubleBufferDC);
	ValidateRect(hWnd, &r);
	EnumChildWindows(hWnd, ChildEnumProc, 0);
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	switch (msg)
	{
	case WM_CLOSE:
		{
			DestroyWindow(hWnd);
			return 0;
		} break;
	case WM_DESTROY:
		{
			PostQuitMessage(0);
			return 0;
		} break;
	case WM_ERASEBKGND:
		{
			return 1;
		} break;
	case WM_PAINT:
		{
			RECT client;
			GetClientRect(hWnd, &client);
			client.bottom -= client.top;
			client.right -= client.left;
			TRIVERTEX        vert [4] ;
			GRADIENT_TRIANGLE    gTri[2];
			vert [0] .x       =  0;
			vert [0] .y       =  0;
			vert [0] .Red     =  0x0000;
			vert [0] .Green   =  0x0000;
			vert [0] .Blue    =  0xFF00;
			vert [0] .Alpha   =  0x0000;

			vert [1] .x       =  client.right;
			vert [1] .y       =  0;
			vert [1] .Red     =  0x7F80;
			vert [1] .Green   =  0x7F80;
			vert [1] .Blue    =  0xFF00;
			vert [1] .Alpha   =  0x0000;

			vert [2] .x       =  client.right;
			vert [2] .y       =  client.bottom; 
			vert [2] .Red     =  0xFF00;
			vert [2] .Green   =  0xFF00;
			vert [2] .Blue    =  0xFF00;
			vert [2] .Alpha   =  0x0000;

			vert [3] .x       =  0;
			vert [3] .y       =  client.bottom;
			vert [3] .Red     =  0x7F80;
			vert [3] .Green   =  0x7F80;
			vert [3] .Blue    =  0xFF00;
			vert [3] .Alpha   =  0x0000;

			gTri[0].Vertex1   = 0;
			gTri[0].Vertex2   = 1;
			gTri[0].Vertex3   = 2;

			gTri[1].Vertex1   = 0;
			gTri[1].Vertex2   = 2;
			gTri[1].Vertex3   = 3;

			HBITMAP hBmp;
			HDC hDC = BeginScene(hWnd, &hBmp);
			GradientFill(hDC, vert, 4, gTri, 2, GRADIENT_FILL_TRIANGLE);
			EndScene(hWnd, hDC, hBmp);
			return 0;
		} break;
	}
	return DefWindowProc(hWnd, msg, wParam, lParam);
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR szCmdLine, int iCmdShow)
{
	WNDCLASS wc;
	wc.cbClsExtra = 0;
	wc.cbWndExtra = 0;
	wc.hbrBackground = reinterpret_cast<HBRUSH>(GetStockObject(WHITE_BRUSH));
	wc.hCursor = LoadCursor(NULL, IDC_ARROW);
	wc.hIcon = LoadIcon(NULL, IDI_WINLOGO);
	wc.hInstance = hInstance;
	wc.lpfnWndProc = WndProc;
	wc.lpszClassName = L"Gradient Window";
	wc.lpszMenuName = NULL;
	wc.style = CS_HREDRAW|CS_VREDRAW;
	RegisterClass(&wc);
	HWND hWnd = CreateWindowEx(0, L"Gradient Window", L"Gradient", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL);
	if (!hWnd)
		return -1;
	ShowWindow(hWnd, SW_SHOW);
	MSG msg;
	while (GetMessage(&msg, NULL, 0, 0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return static_cast<int>(msg.wParam);
}