1 files changed, 129 insertions, 0 deletions
diff --git a/basicctrls_windows.c b/basicctrls_windows.c
new file mode 100644
index 0000000..8947187
--- /dev/null
+++ b/basicctrls_windows.c
@@ -0,0 +1,129 @@
+// 17 july 2014
+
+#include "winapi_windows.h"
+#include "_cgo_export.h"
+
+static LRESULT CALLBACK buttonSubProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR id, DWORD_PTR data)
+{
+	switch (uMsg) {
+	case msgCOMMAND:
+		if (HIWORD(wParam) == BN_CLICKED) {
+			buttonClicked((void *) data);
+			return 0;
+		}
+		return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
+	case WM_NCDESTROY:
+		if ((*fv_RemoveWindowSubclass)(hwnd, buttonSubProc, id) == FALSE)
+			xpanic("error removing Button subclass (which was for its own event handler)", GetLastError());
+		return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
+	default:
+		return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
+	}
+	xmissedmsg("Button", "buttonSubProc()", uMsg);
+	return 0;		// unreached
+}
+
+void setButtonSubclass(HWND hwnd, void *data)
+{
+	if ((*fv_SetWindowSubclass)(hwnd, buttonSubProc, 0, (DWORD_PTR) data) == FALSE)
+		xpanic("error subclassing Button to give it its own event handler", GetLastError());
+}
+
+static LRESULT CALLBACK checkboxSubProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR id, DWORD_PTR data)
+{
+	switch (uMsg) {
+	case msgCOMMAND:
+		if (HIWORD(wParam) == BN_CLICKED) {
+			WPARAM check;
+
+			// we didn't use BS_AUTOCHECKBOX (see controls_windows.go) so we have to manage the check state ourselves
+			check = BST_CHECKED;
+			if (SendMessage(hwnd, BM_GETCHECK, 0, 0) == BST_CHECKED)
+				check = BST_UNCHECKED;
+			SendMessage(hwnd, BM_SETCHECK, check, 0);
+			checkboxToggled((void *) data);
+			return 0;
+		}
+		return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
+	case WM_NCDESTROY:
+		if ((*fv_RemoveWindowSubclass)(hwnd, checkboxSubProc, id) == FALSE)
+			xpanic("error removing Checkbox subclass (which was for its own event handler)", GetLastError());
+		return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
+	default:
+		return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
+	}
+	xmissedmsg("Checkbox", "checkboxSubProc()", uMsg);
+	return 0;		// unreached
+}
+
+void setCheckboxSubclass(HWND hwnd, void *data)
+{
+	if ((*fv_SetWindowSubclass)(hwnd, checkboxSubProc, 0, (DWORD_PTR) data) == FALSE)
+		xpanic("error subclassing Checkbox to give it its own event handler", GetLastError());
+}
+
+BOOL checkboxChecked(HWND hwnd)
+{
+	if (SendMessage(hwnd, BM_GETCHECK, 0, 0) == BST_UNCHECKED)
+		return FALSE;
+	return TRUE;
+}
+
+void checkboxSetChecked(HWND hwnd, BOOL c)
+{
+	WPARAM check;
+
+	check = BST_CHECKED;
+	if (c == FALSE)
+		check = BST_UNCHECKED;
+	SendMessage(hwnd, BM_SETCHECK, check, 0);
+}
+
+static LRESULT CALLBACK textfieldSubProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR id, DWORD_PTR data)
+{
+	switch (uMsg) {
+	case msgCOMMAND:
+		if (HIWORD(wParam) == EN_CHANGE) {
+			textfieldChanged((void *) data);
+			return 0;
+		}
+		return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
+	case WM_NCDESTROY:
+		if ((*fv_RemoveWindowSubclass)(hwnd, textfieldSubProc, id) == FALSE)
+			xpanic("error removing TextField subclass (which was for its own event handler)", GetLastError());
+		return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
+	default:
+		return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
+	}
+	xmissedmsg("TextField", "textfieldSubProc()", uMsg);
+	return 0;		// unreached
+}
+
+void setTextFieldSubclass(HWND hwnd, void *data)
+{
+	if ((*fv_SetWindowSubclass)(hwnd, textfieldSubProc, 0, (DWORD_PTR) data) == FALSE)
+		xpanic("error subclassing TextField to give it its own event handler", GetLastError());
+}
+
+void textfieldSetAndShowInvalidBalloonTip(HWND hwnd, WCHAR *text)
+{
+	EDITBALLOONTIP ti;
+
+	ZeroMemory(&ti, sizeof (EDITBALLOONTIP));
+	ti.cbStruct = sizeof (EDITBALLOONTIP);
+	// this is required to show the error icon
+	// this probably should be localized...
+	ti.pszTitle = L"Invalid Input";
+	ti.pszText = text;
+	ti.ttiIcon = TTI_ERROR;
+	if (SendMessageW(hwnd, EM_SHOWBALLOONTIP, 0, (LPARAM) (&ti)) == FALSE)
+		xpanic("error showing TextField.Invalid() balloon tip", GetLastError());
+	if (MessageBeep(0xFFFFFFFF) == 0)
+		xpanic("error beeping in response to TextField.Invalid()", GetLastError());
+}
+
+void textfieldHideInvalidBalloonTip(HWND hwnd)
+{
+	if (SendMessageW(hwnd, EM_HIDEBALLOONTIP, 0, 0) == FALSE)
+		xpanic("error hiding TextField.Invalid() balloon tip", GetLastError());
+}