WinAPI_Basic_templates/WinAPISamplerTextBox/main.cpp - main - sxfour/cpp_winapi_all_projects

WinAPI_Basic_templates/WinAPISamplerTextBox/main.cpp
66 строк2 KB
Egor Levashov
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09 май 2024, 15:32
09 май 2024, 15:32dcf3ab3
#pragma comment(linker,"\"/manifestdependency:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")

#include <string>
#include <Windows.h>
#include <CommCtrl.h>

using namespace std;
using namespace literals;

HWND window = nullptr;
HWND textBox1 = nullptr;
HWND textBox2 = nullptr;
WNDPROC defWndProc = nullptr;

LRESULT OnWindowClose(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {
	PostQuitMessage(0);

	return CallWindowProc(defWndProc, hwnd, message, wParam, lParam);
}

std::wstring GetText(HWND hwnd) {
	size_t size = SendMessage(hwnd, WM_GETTEXTLENGTH, 0, 0);
	if (!size) { return L""; }
	auto text = wstring(size, '\0');
	SendMessage(hwnd, WM_GETTEXT, text.size() + 1, reinterpret_cast<LPARAM>(text.c_str()));

	return text;
}

LRESULT OnTextChanged(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {
	auto text = GetText(reinterpret_cast<HWND>(lParam));
	for (auto textBox : { textBox1, textBox2 }) {
		if (GetText(textBox) != text) {
			SendMessage(textBox, WM_SETTEXT, 0, reinterpret_cast<LPARAM>(text.c_str()));
		}
	}

	return CallWindowProc(defWndProc, hwnd, message, wParam, lParam);
}

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {
	if (message == WM_CLOSE && hwnd == window) {
		return OnWindowClose(hwnd, message, wParam, lParam);
	}
	if (message == WM_COMMAND && HIWORD(wParam) == EN_CHANGE) {
		return OnTextChanged(hwnd, message, wParam, lParam);
	}

	return CallWindowProc(defWndProc, hwnd, message, wParam, lParam);
}

int main() {
	window = CreateWindowEx(0, WC_DIALOG, L"TextBox sample", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 300, 300, nullptr, nullptr, nullptr, nullptr);
	textBox1 = CreateWindowEx(WS_EX_CLIENTEDGE, WC_EDIT, L"textBox", WS_CHILD | WS_VISIBLE, 10, 10, 100, 23, window, nullptr, nullptr, nullptr);
	textBox2 = CreateWindowEx(WS_EX_CLIENTEDGE, WC_EDIT, L"textBox", WS_CHILD | WS_VISIBLE, 10, 50, 100, 23, window, nullptr, nullptr, nullptr);

	defWndProc = reinterpret_cast<WNDPROC>(SetWindowLongPtr(window, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(WndProc)));
	ShowWindow(window, SW_SHOW);
	MSG message = { 0 };
	while (GetMessage(&message, nullptr, 0, 0)) {
		TranslateMessage(&message);
		DispatchMessage(&message);
	}

	return 0;
}