diff options
Diffstat (limited to 'common/win32/freeze.cpp')
| -rw-r--r-- | common/win32/freeze.cpp | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/common/win32/freeze.cpp b/common/win32/freeze.cpp new file mode 100644 index 0000000..aaa98d8 --- /dev/null +++ b/common/win32/freeze.cpp @@ -0,0 +1,208 @@ +/*
+ * A library for storing parameters in the registry.
+ *
+ * Jonathan Westhues, 2002
+ */
+#include <windows.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+/*
+ * store a window's position in the registry, or fail silently if the registry calls don't work
+ */
+void FreezeWindowPosF(HWND hwnd, char *subKey, char *name)
+{
+ RECT r;
+ GetWindowRect(hwnd, &r);
+
+ HKEY software;
+ if(RegOpenKeyEx(HKEY_CURRENT_USER, "Software", 0, KEY_ALL_ACCESS, &software) != ERROR_SUCCESS)
+ return;
+
+ char *keyName = (char *)malloc(strlen(name) + 30);
+ if(!keyName)
+ return;
+
+ HKEY sub;
+ if(RegCreateKeyEx(software, subKey, 0, "", REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &sub, NULL) != ERROR_SUCCESS)
+ return;
+
+ sprintf(keyName, "%s_left", name);
+ if(RegSetValueEx(sub, keyName, 0, REG_DWORD, (BYTE *)&(r.left), sizeof(DWORD)) != ERROR_SUCCESS)
+ return;
+
+ sprintf(keyName, "%s_right", name);
+ if(RegSetValueEx(sub, keyName, 0, REG_DWORD, (BYTE *)&(r.right), sizeof(DWORD)) != ERROR_SUCCESS)
+ return;
+
+ sprintf(keyName, "%s_top", name);
+ if(RegSetValueEx(sub, keyName, 0, REG_DWORD, (BYTE *)&(r.top), sizeof(DWORD)) != ERROR_SUCCESS)
+ return;
+
+ sprintf(keyName, "%s_bottom", name);
+ if(RegSetValueEx(sub, keyName, 0, REG_DWORD, (BYTE *)&(r.bottom), sizeof(DWORD)) != ERROR_SUCCESS)
+ return;
+
+ sprintf(keyName, "%s_maximized", name);
+ DWORD v = IsZoomed(hwnd);
+ if(RegSetValueEx(sub, keyName, 0, REG_DWORD, (BYTE *)&(v), sizeof(DWORD)) != ERROR_SUCCESS)
+ return;
+
+ free(keyName);
+}
+
+static void Clamp(LONG *v, LONG min, LONG max)
+{
+ if(*v < min) *v = min;
+ if(*v > max) *v = max;
+}
+
+/*
+ * retrieve a window's position from the registry, or do nothing if there is no info saved
+ */
+void ThawWindowPosF(HWND hwnd, char *subKey, char *name)
+{
+ HKEY software;
+ if(RegOpenKeyEx(HKEY_CURRENT_USER, "Software", 0, KEY_ALL_ACCESS, &software) != ERROR_SUCCESS)
+ return;
+
+ HKEY sub;
+ if(RegOpenKeyEx(software, subKey, 0, KEY_ALL_ACCESS, &sub) != ERROR_SUCCESS)
+ return;
+
+ char *keyName = (char *)malloc(strlen(name) + 30);
+ if(!keyName)
+ return;
+
+ DWORD l;
+ RECT r;
+
+ sprintf(keyName, "%s_left", name);
+ l = sizeof(DWORD);
+ if(RegQueryValueEx(sub, keyName, NULL, NULL, (BYTE *)&(r.left), &l) != ERROR_SUCCESS)
+ return;
+
+ sprintf(keyName, "%s_right", name);
+ l = sizeof(DWORD);
+ if(RegQueryValueEx(sub, keyName, NULL, NULL, (BYTE *)&(r.right), &l) != ERROR_SUCCESS)
+ return;
+
+ sprintf(keyName, "%s_top", name);
+ l = sizeof(DWORD);
+ if(RegQueryValueEx(sub, keyName, NULL, NULL, (BYTE *)&(r.top), &l) != ERROR_SUCCESS)
+ return;
+
+ sprintf(keyName, "%s_bottom", name);
+ l = sizeof(DWORD);
+ if(RegQueryValueEx(sub, keyName, NULL, NULL, (BYTE *)&(r.bottom), &l) != ERROR_SUCCESS)
+ return;
+
+ sprintf(keyName, "%s_maximized", name);
+ DWORD v;
+ l = sizeof(DWORD);
+ if(RegQueryValueEx(sub, keyName, NULL, NULL, (BYTE *)&v, &l) != ERROR_SUCCESS)
+ return;
+ if(v)
+ ShowWindow(hwnd, SW_MAXIMIZE);
+
+ RECT dr;
+ GetWindowRect(GetDesktopWindow(), &dr);
+
+ // If it somehow ended up off-screen, then put it back.
+ Clamp(&(r.left), dr.left, dr.right);
+ Clamp(&(r.right), dr.left, dr.right);
+ Clamp(&(r.top), dr.top, dr.bottom);
+ Clamp(&(r.bottom), dr.top, dr.bottom);
+ if(r.right - r.left < 100) {
+ r.left -= 300; r.right += 300;
+ }
+ if(r.bottom - r.top < 100) {
+ r.top -= 300; r.bottom += 300;
+ }
+ Clamp(&(r.left), dr.left, dr.right);
+ Clamp(&(r.right), dr.left, dr.right);
+ Clamp(&(r.top), dr.top, dr.bottom);
+ Clamp(&(r.bottom), dr.top, dr.bottom);
+
+ MoveWindow(hwnd, r.left, r.top, r.right - r.left, r.bottom - r.top, TRUE);
+
+ free(keyName);
+}
+
+/*
+ * store a DWORD setting in the registry
+ */
+void FreezeDWORDF(DWORD val, char *subKey, char *name)
+{
+ HKEY software;
+ if(RegOpenKeyEx(HKEY_CURRENT_USER, "Software", 0, KEY_ALL_ACCESS, &software) != ERROR_SUCCESS)
+ return;
+
+ HKEY sub;
+ if(RegCreateKeyEx(software, subKey, 0, "", REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &sub, NULL) != ERROR_SUCCESS)
+ return;
+
+ if(RegSetValueEx(sub, name, 0, REG_DWORD, (BYTE *)&val, sizeof(DWORD)) != ERROR_SUCCESS)
+ return;
+}
+
+/*
+ * retrieve a DWORD setting, or return the default if that setting is unavailable
+ */
+DWORD ThawDWORDF(DWORD val, char *subKey, char *name)
+{
+ HKEY software;
+ if(RegOpenKeyEx(HKEY_CURRENT_USER, "Software", 0, KEY_ALL_ACCESS, &software) != ERROR_SUCCESS)
+ return val;
+
+ HKEY sub;
+ if(RegOpenKeyEx(software, subKey, 0, KEY_ALL_ACCESS, &sub) != ERROR_SUCCESS)
+ return val;
+
+ DWORD l = sizeof(DWORD);
+ DWORD v;
+ if(RegQueryValueEx(sub, name, NULL, NULL, (BYTE *)&v, &l) != ERROR_SUCCESS)
+ return val;
+
+ return v;
+}
+
+/*
+ * store a string setting in the registry
+ */
+void FreezeStringF(char *val, char *subKey, char *name)
+{
+ HKEY software;
+ if(RegOpenKeyEx(HKEY_CURRENT_USER, "Software", 0, KEY_ALL_ACCESS, &software) != ERROR_SUCCESS)
+ return;
+
+ HKEY sub;
+ if(RegCreateKeyEx(software, subKey, 0, "", REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &sub, NULL) != ERROR_SUCCESS)
+ return;
+
+ if(RegSetValueEx(sub, name, 0, REG_SZ, (BYTE *)val, strlen(val)+1) != ERROR_SUCCESS)
+ return;
+}
+
+/*
+ * retrieve a string setting, or return the default if that setting is unavailable
+ */
+void ThawStringF(char *val, int max, char *subKey, char *name)
+{
+ HKEY software;
+ if(RegOpenKeyEx(HKEY_CURRENT_USER, "Software", 0, KEY_ALL_ACCESS, &software) != ERROR_SUCCESS)
+ return;
+
+ HKEY sub;
+ if(RegOpenKeyEx(software, subKey, 0, KEY_ALL_ACCESS, &sub) != ERROR_SUCCESS)
+ return;
+
+ DWORD l = max;
+ if(RegQueryValueEx(sub, name, NULL, NULL, (BYTE *)val, &l) != ERROR_SUCCESS)
+ return;
+ if(l >= (DWORD)max) return;
+
+ val[l] = '\0';
+ return;
+}
+
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