Having simple window, button which opens dialog. But I want to add close button to it.
I have tried to add close button with adding WM_SYSMENU, with adding EnableMenuItem, but it didn't work:
Minimal code is:
resource.rc:
IDD_FORMVIEW DIALOGEX 0, 0, 178, 86
STYLE DS_SETFONT | DS_CONTROL | WS_VISIBLE | WS_SYSMENU
EXSTYLE WS_EX_OVERLAPPEDWINDOW
CAPTION "TEST"
FONT 12, "Microsoft Sans Serif", 400, 0, 0xCC
BEGIN
CTEXT "Test",IDC_STATIC,46,4,74,8,0,WS_EX_CLIENTEDGE
END
resource.h:
#define IDD_FORMVIEW 101
Test.cpp:
hwndButton = CreateWindowW(L"BUTTON",
L"ENTER",
WS_CHILD | WS_VISIBLE | BS_DEFPUSHBUTTON | WS_CLIPSIBLINGS,
605, 510, 255, 45,
hWnd, (HMENU)1, NULL, NULL);
case WM_COMMAND:
{
switch (LOWORD(wParam)) {
case 2: {
if (hwndHTDW == NULL) {
hwndHTDW = CreateDialog(hInstance, MAKEINTRESOURCE(IDD_FORMVIEW), hWnd, DialogProc);
ShowWindow(hwndHTDW, SW_SHOW);
UpdateWindow(hwndHTDW);
}
}
break;
}
}
{
switch (msg) {
case WM_INITDIALOG: {
EnableMenuItem(GetSystemMenu(hwnd, FALSE), SC_CLOSE,
MF_BYCOMMAND | MF_ENABLED);
return TRUE;
}
break;
default:
return FALSE;
}
return TRUE;
Modify your code a little bit.
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
hInst = hInstance; // Store instance handle in our global variable
HWND hWnd = CreateWindowW(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, nullptr, nullptr, hInstance, nullptr);
hwndButton = CreateWindowW(L"BUTTON",
L"ENTER",
WS_CHILD | WS_VISIBLE | BS_DEFPUSHBUTTON | WS_CLIPSIBLINGS,
605, 510, 255, 45,
hWnd, (HMENU)1, NULL, NULL);
if (!hWnd)
{
return FALSE;
}
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
return TRUE;
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_COMMAND:
{
int wmId = LOWORD(wParam);
// Parse the menu selections:
switch (wmId)
{
case IDM_ABOUT:
DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
break;
case IDM_EXIT:
DestroyWindow(hWnd);
break;
case 1:
{
if (hwndHTDW == NULL)
{
hwndHTDW = CreateDialog(hInst, MAKEINTRESOURCE(IDD_FORMVIEW), hWnd, DialogProc);
Button_Close = CreateWindowW(L"BUTTON",
L"CLOSE",
WS_CHILD | WS_VISIBLE | BS_DEFPUSHBUTTON | WS_CLIPSIBLINGS | WS_TABSTOP,
130, 100, 80, 30,
hwndHTDW, (HMENU)2, NULL, NULL);
ShowWindow(hwndHTDW, SW_SHOW);
UpdateWindow(hwndHTDW);
}
}
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
}
break;
case WM_PAINT:
{
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hWnd, &ps);
// TODO: Add any drawing code that uses hdc here...
EndPaint(hWnd, &ps);
}
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
BOOL CALLBACK DialogProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
BOOL fError;
switch (message)
{
case WM_INITDIALOG:
{
EnableMenuItem(GetSystemMenu(hwnd, FALSE), SC_CLOSE,
MF_BYCOMMAND | MF_ENABLED);
return TRUE;
}
break;
case WM_COMMAND:
{
switch (LOWORD(wParam))
{
case 2:
{
EndDialog(hwnd, LOWORD(wParam));
return (INT_PTR)TRUE;
}
default:
break;
}
}
default:
return FALSE;
}
return TRUE;
}
Updated:
Create an extra button through CreateWindow
and pass the handle of the dialog box to the button as a parameter.
HWND Button_Close = CreateWindowW(L"BUTTON",
L"CLOSE",
WS_CHILD | WS_VISIBLE | BS_DEFPUSHBUTTON | WS_CLIPSIBLINGS | WS_TABSTOP,
130, 100, 80, 30,
hwndHTDW, (HMENU)2, NULL, NULL);
In the callback function of the dialog box, add the WM_COMMAND
event and add the following code.
case WM_COMMAND:
{
switch (LOWORD(wParam))
{
case 2:
{
EndDialog(hwnd, LOWORD(wParam));
return (INT_PTR)TRUE;
}
}
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