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Source.cpp
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Source.cpp
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#pragma comment(linker,"\"/manifestdependency:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")
#pragma comment(lib,"gdiplus.lib")
#include <windows.h>
#include <gdiplus.h>
using namespace Gdiplus;
TCHAR szClassName[] = TEXT("Window");
WNDPROC DefaultEditBoxWndProc;
void GetRoundRectPath(GraphicsPath* pPath, Rect r, int dia)
{
// diameter can't exceed width or height
if (dia > r.Width) dia = r.Width;
if (dia > r.Height) dia = r.Height;
// define a corner
Rect Corner(r.X, r.Y, dia, dia);
// begin path
pPath->Reset();
// top left
pPath->AddArc(Corner, 180, 90);
// tweak needed for radius of 10 (dia of 20)
if (dia == 20)
{
Corner.Width += 1;
Corner.Height += 1;
r.Width -= 1; r.Height -= 1;
}
// top right
Corner.X += (r.Width - dia - 1);
pPath->AddArc(Corner, 270, 90);
// bottom right
Corner.Y += (r.Height - dia - 1);
pPath->AddArc(Corner, 0, 90);
// bottom left
Corner.X -= (r.Width - dia - 1);
pPath->AddArc(Corner, 90, 90);
// end path
pPath->CloseFigure();
}
void DrawRoundRect(Graphics* pGraphics, Rect r, Color color, int radius, float width)
{
// set to pixel mode
int oldPageUnit = pGraphics->SetPageUnit(UnitPixel);
// define the pen
Pen pen(color, width);
pen.SetAlignment(PenAlignmentCenter);
// get the corner path
GraphicsPath path;
// get path
GetRoundRectPath(&path, r, radius);
// draw the round rect
pGraphics->DrawPath(&pen, &path);
// restore page unit
pGraphics->SetPageUnit((Unit)oldPageUnit);
}
LRESULT CALLBACK MyEditBoxProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
static int border_thickness = 6;
switch (msg)
{
case WM_NCPAINT:
{
HDC hdc = GetWindowDC(hWnd);
RECT rc;
GetClientRect(hWnd, &rc);
rc.right += 2 * border_thickness;
rc.bottom += 2 * border_thickness;
{
Graphics g(hdc);
g.Clear(Color::White);
g.SetSmoothingMode(SmoothingModeAntiAlias);
Rect rect = { rc.left, rc.left, rc.right - rc.left, rc.bottom - rc.top };
if (GetFocus() == hWnd) {
DrawRoundRect(&g, rect, Color(0, 97, 224), border_thickness, 2.0f);
}
else {
DrawRoundRect(&g, rect, Color(159, 158, 161), border_thickness, 1.0f);
}
}
ReleaseDC(hWnd, hdc);
}
return 0;
case WM_NCCALCSIZE:
if (lParam) {
NCCALCSIZE_PARAMS* sz = (NCCALCSIZE_PARAMS*)lParam;
InflateRect(&sz->rgrc[0], -border_thickness, -border_thickness);
return 0;
}
break;
case WM_NCHITTEST:
return HTCLIENT;
default:
break;
}
return CallWindowProc(DefaultEditBoxWndProc, hWnd, msg, wParam, lParam);
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
static HWND hEdit1;
static HWND hEdit2;
switch (msg)
{
case WM_CREATE:
hEdit1 = CreateWindowEx(0, L"EDIT", 0, WS_VISIBLE | WS_CHILD | ES_AUTOHSCROLL, 0, 0, 0, 0, hWnd, 0, ((LPCREATESTRUCT)lParam)->hInstance, 0);
hEdit2 = CreateWindowEx(0, L"EDIT", 0, WS_VISIBLE | WS_CHILD | ES_AUTOHSCROLL, 0, 0, 0, 0, hWnd, 0, ((LPCREATESTRUCT)lParam)->hInstance, 0);
DefaultEditBoxWndProc = (WNDPROC)GetWindowLongPtr(hEdit1, GWLP_WNDPROC);
SetWindowLongPtr(hEdit1, GWLP_WNDPROC, (LONG_PTR)MyEditBoxProc);
SetWindowLongPtr(hEdit2, GWLP_WNDPROC, (LONG_PTR)MyEditBoxProc);
break;
case WM_SIZE:
MoveWindow(hEdit1, 10, 10, 256, 32, TRUE);
MoveWindow(hEdit2, 10, 50, 256, 32, TRUE);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, msg, wParam, lParam);
}
return 0;
}
int WINAPI wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPWSTR lpCmdLine, _In_ int nShowCmd)
{
ULONG_PTR gdiToken;
GdiplusStartupInput gdiSI;
GdiplusStartup(&gdiToken, &gdiSI, NULL);
MSG msg;
WNDCLASS wndclass = {
CS_HREDRAW | CS_VREDRAW,
WndProc,
0,
0,
hInstance,
0,
LoadCursor(0,IDC_ARROW),
(HBRUSH)(COLOR_WINDOW + 1),
0,
szClassName
};
RegisterClass(&wndclass);
HWND hWnd = CreateWindowEx(0,
szClassName,
TEXT("Window"),
WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,
CW_USEDEFAULT,
0,
CW_USEDEFAULT,
0,
0,
0,
hInstance,
0
);
ShowWindow(hWnd, SW_SHOWDEFAULT);
UpdateWindow(hWnd);
while (GetMessage(&msg, 0, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
GdiplusShutdown(gdiToken);
return (int)msg.wParam;
}