Create radio_buttons.c

controls/radio_buttons.c

@@ -0,0 +1,109 @@
+#include <windows.h>
+
+#define ID_BLUE 1
+#define ID_YELLOW 2
+#define ID_ORANGE 3
+
+LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
+
+HINSTANCE g_hinst;
+COLORREF g_color;
+
+int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
+                    PWSTR lpCmdLine, int nCmdShow) {
+
+    HWND hwnd;
+    MSG  msg ;    
+    WNDCLASSW wc = {0};
+    wc.lpszClassName = L"GroupBox";
+    wc.hInstance     = hInstance;
+    wc.hbrBackground = GetSysColorBrush(COLOR_3DFACE);
+    wc.lpfnWndProc   = WndProc;
+    wc.hCursor       = LoadCursor(0, IDC_ARROW);
+
+    g_hinst = hInstance;
+  
+    RegisterClassW(&wc);
+    hwnd = CreateWindowW(wc.lpszClassName, L"GroupBox",
+                  WS_OVERLAPPEDWINDOW | WS_VISIBLE,
+                  100, 100, 300, 170, 0, 0, hInstance, 0);  
+
+
+    while (GetMessage(&msg, NULL, 0, 0)) {
+            
+        DispatchMessage(&msg);
+    }
+
+    return (int) msg.wParam;
+}
+
+LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, 
+    WPARAM wParam, LPARAM lParam) {
+
+    HDC hdc;
+    PAINTSTRUCT ps;
+    HBRUSH hBrush, holdBrush;
+    HPEN hPen, holdPen;
+
+    switch(msg) {
+
+        case WM_CREATE:
+
+            CreateWindowW(L"Button", L"Choose colour", 
+                  WS_CHILD | WS_VISIBLE | BS_GROUPBOX,
+                  10, 10, 120, 110, hwnd, (HMENU) 0, g_hinst, NULL);
+            CreateWindowW(L"Button", L"Blue",
+                  WS_CHILD | WS_VISIBLE | BS_AUTORADIOBUTTON,
+                  20, 30, 100, 30, hwnd, (HMENU) ID_BLUE , g_hinst, NULL);
+            CreateWindowW(L"Button", L"Yellow",
+                  WS_CHILD | WS_VISIBLE | BS_AUTORADIOBUTTON,
+                  20, 55, 100, 30, hwnd, (HMENU) ID_YELLOW , g_hinst, NULL);
+            CreateWindowW(L"Button", L"Orange",
+                  WS_CHILD | WS_VISIBLE | BS_AUTORADIOBUTTON,
+                  20, 80, 100, 30, hwnd, (HMENU) ID_ORANGE , g_hinst, NULL);      
+            break;
+
+        case WM_COMMAND:
+
+            if (HIWORD(wParam) == BN_CLICKED) {
+            
+                switch (LOWORD(wParam)) {
+                
+                    case ID_BLUE:
+                        g_color = RGB(0, 76, 255);
+                        break;
+                    case ID_YELLOW:
+                        g_color = RGB(255, 255, 0);
+                        break;
+                    case ID_ORANGE:
+                        g_color = RGB(255, 123, 0);
+                        break;
+                }                    
+                InvalidateRect(hwnd, NULL, TRUE);
+            }
+            break;
+
+        case WM_PAINT:
+
+            hdc = BeginPaint(hwnd, &ps);
+            hBrush = CreateSolidBrush(g_color);
+            hPen = CreatePen(PS_NULL, 1, RGB(0, 0, 0));
+            holdPen = SelectObject(hdc, hPen);
+            holdBrush = (HBRUSH) SelectObject(hdc, hBrush);
+
+            Rectangle(hdc, 160, 20, 260, 120);
+
+            SelectObject(hdc, holdBrush);
+            SelectObject(hdc, holdPen);
+            DeleteObject(hPen);
+            DeleteObject(hBrush);
+            EndPaint(hwnd, &ps);
+            break;
+
+        case WM_DESTROY:
+            PostQuitMessage(0);
+            break; 
+    }
+
+    return DefWindowProcW(hwnd, msg, wParam, lParam);
+}